CN104439621A - Refined multifunctional welding system and control method thereof - Google Patents
Refined multifunctional welding system and control method thereof Download PDFInfo
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- CN104439621A CN104439621A CN201410616044.7A CN201410616044A CN104439621A CN 104439621 A CN104439621 A CN 104439621A CN 201410616044 A CN201410616044 A CN 201410616044A CN 104439621 A CN104439621 A CN 104439621A
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- 238000003466 welding Methods 0.000 title claims abstract description 192
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005070 sampling Methods 0.000 claims abstract description 31
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 7
- 238000011084 recovery Methods 0.000 claims description 46
- 238000004458 analytical method Methods 0.000 claims description 29
- 238000012360 testing method Methods 0.000 claims description 28
- 230000036413 temperature sense Effects 0.000 claims description 27
- 230000006698 induction Effects 0.000 claims description 18
- 238000012544 monitoring process Methods 0.000 claims description 14
- 230000002452 interceptive effect Effects 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 235000019633 pungent taste Nutrition 0.000 claims description 3
- 230000003019 stabilising effect Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 abstract description 17
- 230000003993 interaction Effects 0.000 abstract 2
- 101000583581 Homo sapiens Polyhomeotic-like protein 3 Proteins 0.000 description 16
- 102100030905 Polyhomeotic-like protein 3 Human genes 0.000 description 16
- 101100236764 Caenorhabditis elegans mcu-1 gene Proteins 0.000 description 14
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 8
- 229910052786 argon Inorganic materials 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 101100338491 Oryza sativa subsp. japonica HCT1 gene Proteins 0.000 description 2
- 101100495309 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) CDH1 gene Proteins 0.000 description 2
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- 238000010891 electric arc Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
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- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
- B23K9/1043—Power supply characterised by the electric circuit
- B23K9/1056—Power supply characterised by the electric circuit by using digital means
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Abstract
A refined multifunctional welding system is provided with a welding module, a sampling unit arranged on the welding module, a power module electrically connected with the sampling unit and the welding module, and a control module electrically connected with the sampling unit and the power module. The control module mainly comprises a main control circuit and a man-machine interaction control circuit, wherein the main control circuit is used for outputting pulse width modulation control signals and controlling the other modules in the system, and the man-machine interaction control circuit is connected with the main control circuit and used for mode selection and parameter adjustment. A small current stabilizing module is connected between the control module and the welding module in series and mainly comprises a direct-current power source, a current-limiting resistor and a control switch, wherein the direct-current power source, the current-limiting resistor and the control switch are sequentially connected. The switch frequency above 60 KHZ is adopted in the power module, so that the refined multifunctional welding system is higher in dynamic response speed and control accuracy and compatible with multiple welding functions better, and a control method of the refined multifunctional welding system has the same advantages.
Description
Technical field
the present invention relates to a kind of digital welding system, particularly relate to one and to become more meticulous Multifunctional welding welding system and control method thereof.
Background technology
at present, plasma cutting inverter has been widely used in the weld job of industrial every profession and trade to various non ferrous metal and their alloy.
plasma cutting inverter is lightweight with it, and volume is little, produce consume less, energy-saving effect is remarkable and welding technological properties is outstanding and deeply favor by user.And interlock BUCK formula pulsewidth modulation multifunctional inversion type welding machine and the multi-functional inverter argon arc welding machine of digitalization high frequency of digitlization is all adopt digital control chip to control the source of welding current in digital multifunctional welding system, multiple welding procedure be integrated in one, the increment realizing one-machine-multi-function is used.But, the when it come to meticulous welding of small area analysis direct current, as plate sheet welding, during little electronic original part welding, current Multifunctional welding welding system, because welding current too small (be less than 3 amperes, be generally less than 1 ampere even 0.5 ampere), makes testing circuit not easily detect, cause Power supply unstable, finally cause cannot the small area analysis welding effect of compatible small area analysis welding machine technique or compatibility unsatisfactory.
in view of Multifunctional welding welding system add accurate survey current detecting in the welding of detection limit instrument reply small area analysis time with high costs.Be necessary that providing a kind of also can have enough control accuracies to meet the Multifunctional welding welding system that becomes more meticulous welded small area analysis (being less than 1 ampere) direct current without the need to adding Precision measurement measuring instrument.
Summary of the invention
the technical problem to be solved in the present invention is to provide the Multifunctional welding welding system that possesses multi-functional welding and the one possessing small area analysis direct current welding function becomes more meticulous, and according to the control method of the compatible multiple welding function of this welding system that becomes more meticulous.
one becomes more meticulous Multifunctional welding welding system, is provided with for implementing the welding module welded; Be arranged on welding module, for the sampling unit of sampling to welding current/voltage; Be electrically connected respectively with sampling unit, welding module, for providing the power module of power supply for this Multifunctional welding welding system that becomes more meticulous; It is characterized in that, be also provided with and be electrically connected with sampling unit, power module, for storing all kinds of weld signature parameter and the control module controlled other modules in the Multifunctional welding welding system that becomes more meticulous according to this characteristic parameter; Control module mainly include for output pulse width modulator control signal and and the main control circuit other modules in this system controlled according to described characteristic parameter and being connected with this main control circuit, for the human-computer interactive control circuit that model selection and parameter regulate; Control module and welding module and between be also in series with small area analysis stable module; Small area analysis stable module mainly comprises connects successively: dc source, current-limiting resistance and gauge tap.
further, the temperature sense circuit be connected between control module and power module is also provided with;
also be provided with the fan drive circuit be connected respectively with control module and fan, control module controls fan drive circuit lifting according to the hotness signal that temperature sense circuit inputs or reduces the revolution of fan;
also be provided with the fault induction module be connected respectively with temperature sense circuit, control module, when the temperature that temperature sense module detects exceedes setting, fault induction module sends fault-signal to control module, and control module stops output pulse width modulator control signal.
further, power module mainly comprises the switch and filter circuit, rectifier bridge, mu balanced circuit, insulated gate bipolar translator power tube inverse changing driving circuit, main transformer volt circuit, output rectification circuit, out put reactor, secondary insulating grid bipolar-type power pipe inverse changing driving circuit, Hall element circuit that are arranged in series successively; Mu balanced circuit input has also been arranged in parallel auxiliary power circuit and primary side voltage sensor; Insulated gate bipolar translator power tube inverse changing driving circuit is also provided with the first thermistor; Output rectification circuit is provided with the second thermistor;
temperature sense circuit, one end is connected with first, second thermistor respectively, and one end is connected to main control circuit and connects after fault sensor circuit;
welding module is also provided with: be connected to the high-frequency arc strike control circuit between main control circuit and power module, anti-electric hit manual welding selection circuit, non-melt pole gas protect weldering carry arc selection circuit;
sampling unit is provided with the pulse current sample circuit, current feedback circuit and the voltage feedback circuit that are connected between control module and power module; Pulse current sample circuit one end is connected with main control circuit, and one end is connected to the node between main transformer and output rectification circuit;
current feedback circuit one end is connected with main control circuit, and one end is connected to Hall element circuit;
voltage feedback circuit one end is connected with main control circuit, and one end is connected to the node between Hall element circuit and the positive pole of welding module;
high-frequency arc strike control circuit is also provided with striking coil, and striking coil one end is connected with output rectification circuit, and one end is connected with the negative pole of welding module;
anti-electric manual welding selection circuit one end of hitting is connected with main control circuit, and one end is connected to the node between output rectification circuit and striking coil;
non-melt pole gas guarantor weldering is carried arc selection circuit one end and is connected with main control circuit, and one end is connected to the node between output rectification circuit and striking coil;
fault induction module is also provided with the main circuit sensor being connected to node between insulated gate bipolar translator power tube inverter circuit and main transformer;
human-computer interactive control circuit be provided be connected to main control circuit respectively precision current Circuit tuning, with reference to regulate and mode selection switch;
main control circuit is also connected with magnetic valve by air valve control circuit, for the release of Control protection gas;
main control circuit is also connected with secondary insulating grid bipolar-type power pipe inverse changing driving circuit by drive circuit; Drive circuit one end is connected to the node in rectifier bridge and mu balanced circuit; Fault induction module one end is in parallel with main control circuit accesses drive circuit.
further, power module adopts the switching frequency of more than 60KHZ; Power module according to pulse-width modulation circuit control signal to welding module voltage pulse output and pulse current.
improve as one, voltage feedback circuit mainly comprises: the first terminals, first to fourth operational amplifier, the 17 to the 18 operational amplifier, the 15 to the 29 resistance, the 109 to the 110 resistance, the 3rd to the 7th electric capacity, the 321 to the 322 electric capacity, the second to the 3rd diode, the 46 diode group, the 5th test lead and se current terminal, sense current terminal and current detecting end;
15 resistance one end is connected to the first terminals 3 mouthfuls, and one end is connected to the negative pole of the second diode group, and the positive pole of the second diode group, the 18 resistance, the 19 resistance, the 109 resistance, the 110 resistance, ground wire are connected successively; 22 resistance, the 24 resistance, the 26 resistance, the 27 resistance, the 17 operational amplifier, the 18 operational amplifier, current detecting end are connected on the node between the 19 resistance and the 109 resistance after connecting successively; The positive pole of the 3rd electric capacity is connected to the first terminals 3 mouthfuls, and the negative pole of the 3rd electric capacity is connected to 4 mouthfuls of the first terminals; 5th test lead and sense current terminal are attempted by the node between the 19 resistance and the 22 resistance; 23 resistance one end is connected to the 5th test lead, and one end is connected to institute's ground wire; 16 resistor coupled in parallel is in the both positive and negative polarity of the second diode group; 17 resistance one end is connected to the first terminals 3 mouthfuls, and the other end is connected to the node between the 18 resistance and the 19 resistance; The positive pole of the 4th electric capacity is connected to 6 mouthfuls of the second operational amplifier, and the negative pole of the 4th electric capacity is connected to 7 mouthfuls of the second operational amplifier; 21 resistance one end is connected to the positive pole of the 5th electric capacity, and the other end is connected to one end of the 22 resistance, and the negative pole of the 5th electric capacity is connected to the other end of the 22 resistance; 3rd diode cathode is connected to the node between the 24 resistance and the 26 resistance, and the 3rd diode cathode is connected to the node between the 26 resistance and the 27 resistance; After 6th electric capacity and the 7th Capacitance parallel connection, positive pole is connected to the 3rd diode cathode, and negative pole is connected to ground wire; The positive pole of the 321 electric capacity is connected to the first terminals 1 mouthful, and the negative pole of the 321 electric capacity is connected to ground wire; The negative pole of the 322 electric capacity is connected to 2 mouthfuls of the first terminals, and the positive pole of the 322 electric capacity is connected to ground wire; 2 mouthfuls of first operational amplifier are connected to the second diode group negative pole, and 1 mouthful of the first operational amplifier is connected to the dynode of the second diode group, access ground wire after 3 mouthfuls of serial connection the 28 resistance of the first operational amplifier; 6 mouthfuls of second operational amplifier are connected to the node between the 18 resistance and the 19 resistance, and 7 mouthfuls of the second operational amplifier are connected to sense current terminal, access ground wire after 5 mouthfuls of serial connection the 29 resistance of the second operational amplifier; 6 mouthfuls of 3rd operational amplifier are connected to the node between the positive pole of 21 resistance and the 5th electric capacity; 7 mouthfuls of 3rd operational amplifier are connected to the 3rd diode cathode; 5 mouthfuls of 3rd operational amplifier are connected to the node between the negative pole of the 22 resistance and the 5th electric capacity; 2 mouthfuls of four-operational amplifier connect access se current terminal afterwards with 1 mouthfuls; Node between 3 mouthfuls of access the 109 resistance of four-operational amplifier and the 110 resistance; The dynode of the 46 diode group accesses 3 mouthfuls of the first terminals;
voltage feedback circuit mainly comprises: the 31 terminals, the 5th to the 7th voltage signal follower, the first to the 3rd resistance, the 8th to the 14 resistance, the first to the second electric capacity, the first diode.42 to the 45 diode, the 4th test lead, sense voltage end, se voltage end, striking indication end;
the negative pole of the 42 diode and the negative pole of the 44 diode also connect, the positive pole of the 43 diode and the positive pole of the 45 diode also connect rear access ground wire, the positive pole of the 42 diode is connected to the negative pole of the 43 diode, the positive pole of the 44 diode is connected to the negative pole of the 45 diode, forms the first bridge rectifier; 3 mouthfuls of 31 terminals are connected to the positive pole of the 42 diode, and 4 mouthfuls of the 31 terminals are connected to the positive pole of the 44 diode; First resistor coupled in parallel is on the negative pole of the 44 diode and the positive pole of the 45 diode; Second resistance is connected in parallel on the first resistance two ends after being connected in series with the 3rd resistance; The positive pole of the first electric capacity is connected to the node between the 3rd resistance and the second resistance, and the negative pole of the first electric capacity is connected to ground wire; 3 mouthfuls of 5th voltage signal follower are connected to the node between the second resistance and the 3rd resistance, 2 mouthfuls of the 5th voltage signal follower and be connected to the 4th test lead and sense voltage end after being connected to 1 mouthful and node after connecing; Be connected to the 4th test lead after 3 mouthfuls of 6th voltage signal follower are connected in series with the tenth resistance, be connected to the 4th test lead after 2 mouthfuls of the 6th voltage signal follower are connected in series with the 9th resistance, 1 mouthful of the 6th voltage signal follower is connected to striking indication end; The positive pole of the second electric capacity is connected to the node between the 11 resistance and 1 mouthful of the 5th voltage follower, and the negative pole of the second electric capacity is connected to ground wire; 11 resistance one end is connected to the 4th test lead, and the other end is connected to ground wire; The negative pole of the first diode is connected to 3 mouthfuls of the 6th voltage signal follower, is connected to 1 mouthful of the 6th voltage signal follower after the positive pole of the first diode is connected in series with the 12 resistance; 4th test lead, the 13 resistance, the 14 resistance, ground wire are connected successively; 5 mouthfuls of nodes be connected between the 13 resistance and the 14 resistance of the 7th voltage signal follower, 6 mouthfuls of the 7th voltage signal follower connect access se voltage end afterwards with 7 mouthfuls of the 7th voltage signal follower;
pulse sampling circuit mainly comprises: the 4th terminals, the 9th to the tenth voltage follower, the 303 to the 304 resistance, the 213 to the 214 resistance, the 64 to the 67 electric capacity, the 30 to the 31 diode, the 32 to the 39 fast recovery diode, the second to the 3rd transformer, output signal end;
32 to the 35 fast recovery diode forms the second bridge rectifier; 3 mouthfuls of 4th terminals are connected to the positive pole of the 34 fast recovery diode, and 4 mouthfuls of the 4th terminals are connected to the positive pole of the 32 fast recovery diode; After 65 electric capacity and the 303 resistance and 213 resistor coupled in parallel, the negative pole of this electric capacity is connected to the positive pole of the 33 fast recovery diode, and the positive pole of this electric capacity is connected to the negative pole of the 32 fast recovery diode; 5 mouthfuls of 9th voltage follower are connected to the negative pole of the 32 fast recovery diode, and 6 mouthfuls of the 9th voltage follower are connected to output signal end, and 7 mouthfuls of the 9th voltage follower are connected to the positive pole of the 30 diode; The negative pole of the 30 diode is connected to output signal end;
36 to the 39 fast recovery diode composition the 3rd bridge rectifier; 1 mouthful of 4th terminals is connected to the positive pole of the 38 fast recovery diode, and 2 mouthfuls of the 4th terminals are connected to the positive pole of the 36 fast recovery diode; After 64 electric capacity and the 304 resistance and 214 resistor coupled in parallel, the negative pole of this electric capacity is connected to the positive pole of the 37 fast recovery diode, and the positive pole of this electric capacity is connected to the negative pole of the 36 fast recovery diode; 3 mouthfuls of tenth voltage follower are connected to the negative pole of the 36 fast recovery diode, and 2 mouthfuls of the tenth voltage follower are connected to output signal end, and 1 mouthful of the tenth voltage follower is connected to the positive pole of the 31 diode; The negative pole of the 31 diode is connected to output signal end; 8 mouthfuls of tenth voltage follower are accessed positive 15V normal voltages and are connected to the positive pole of the 66 electric capacity, and the negative pole of this electric capacity is connected with ground wire; 4 mouthfuls of accesses of the tenth voltage follower are born 15V normal voltage and are connected to the positive pole of the 67 electric capacity, and the negative pole of this electric capacity is connected with ground wire; The positive pole of the 35 fast recovery diode is connected with ground wire with after the positive pole parallel connection of the 37 fast recovery diode.
moreover temperature sense main circuit will comprise: the first to the second thermistor, the 8th to the 9th terminals, the 11 to the 13 operational amplifier, the 294 to the 309 resistance, the 71 to the 76 electric capacity, the 131 electric capacity, the 28 to the 29 diode, the first to the second temperature monitoring end;
between 1 mouthful and 2 mouthfuls that first thermistor is serially connected with the 8th terminals, between 1 mouthful and 2 mouthfuls that the second thermistor is serially connected with the 9th terminals; The positive pole of the 71 electric capacity is connected to 2 mouthfuls of the 8th terminals, and the negative pole of this electric capacity is connected with ground wire; The positive pole of the 74 electric capacity is connected to 2 mouthfuls of the 9th terminals, and the negative pole of this electric capacity is connected with ground wire; 72 electric capacity is connected to 1 mouthful of the 8th terminals, and the negative pole of this electric capacity is connected with ground wire; The positive pole of the 75 electric capacity is connected to 1 mouthful of the 9th terminals, and the negative pole of this electric capacity is connected with ground wire; 294 resistance, the 295 resistance, the 297 resistance connect successively after two ends access equal ground wire; 303 resistance, the 304 resistance, the 305 resistance connect successively after two ends access equal ground wire; 296 resistance, the 298 resistance connect successively after two ends access equal ground wire; 1 mouthful of node be connected between 294 resistance and 295 resistance of the 8th terminals, 2 mouthfuls of nodes be connected between 295 resistance and 297 resistance of the 8th terminals, 1 mouthful of node be connected between 303 resistance and 304 resistance of the 9th terminals, 2 mouthfuls of nodes be connected between 304 resistance and 305 resistance of the 9th terminals; The positive pole of the 73 electric capacity is connected to the node between the 298 resistance and the 296 resistance, and the negative pole of the 73 electric capacity is connected to ground wire; 3 mouthfuls of nodes be connected between the 296 resistance and 298 resistance of the 11 operational amplifier, 2 mouthfuls of the 11 operational amplifier are connected to 1 mouthful of this operational amplifier; 2 mouthfuls of 8th terminals, the 299 resistance, the 301 resistance, 5 mouthfuls of the 12 operational amplifier connect successively; The positive pole of the 131 electric capacity is connected to the node in the middle of the 299 resistance and the 301 resistance, and the negative pole of this electric capacity connects ground wire; Between 1 mouthful and 6 mouthfuls of the 12 operational amplifier that 300 resistance is serially connected in the 11 operational amplifier; The positive pole of the 28 diode is connected to 7 mouthfuls of the 12 operational amplifier, and the negative pole of the 28 diode is connected to the first temperature monitoring end; 302 resistance is serially connected between 6 mouthfuls of the 12 operational amplifier and the negative pole of the 28 diode; 2 mouthfuls of 9th terminals, the 307 resistance, the 308 resistance, 10 mouthfuls of the 13 operational amplifier connect successively; The negative pole of the 76 electric capacity is connected to ground wire, and the positive pole of this electric capacity is connected to the node between the 307 resistance and the 308 resistance; Between 1 mouthful and 9 mouthfuls of the 13 operational amplifier that 306 resistance is serially connected in the 11 operational amplifier; 29 diode cathode is connected to 8 mouthfuls of the 13 operational amplifier, and the negative pole of the 29 diode is connected to the second temperature monitoring end; 309 resistance be serially connected with 9 mouthfuls of the 13 operational amplifier with the negative pole of the 29 diode;
fan drive circuit mainly comprises: photoelectrical coupler, the 11 terminals, the 45 to the 50 resistance, the 37 to the 38 electric capacity, the 62 electric capacity, the 27 diode, the 202 diode, the 4th Zener diode, the 3rd FET, the 4th triode, inductance, signal input part and fan;
connect successively for 2 mouthfuls of signal input part, the 50 resistance, the 49 resistance, photoelectrical coupler; 3 mouthfuls of photoelectrical coupler are connected to the node between the 50 resistance and the 49 resistance, and 6 mouthfuls of photoelectrical coupler are connected to 7 mouthfuls of this photoelectrical coupler; 38 capacitance cathode is connected to 8 mouthfuls of photoelectrical coupler, and the negative pole of the 38 electric capacity is connected to 5 mouthfuls of photoelectrical coupler; 44 resistance one end is connected to 7 mouthfuls of photoelectrical coupler, and the other end is connected to the negative pole of the 202 diode, and the positive pole of the 202 diode is connected to the control pole of the 3rd FET; 48 resistance is serially connected between 7 mouthfuls of photoelectrical coupler and the control pole of the 3rd FET; The positive pole of the 4th Zener diode is connected to 5 mouthfuls of photoelectrical coupler, and the negative pole of the 4th Zener diode is connected to the positive pole of the 202 diode; Between the control pole that 45 resistance is serially connected with the 3rd FET and source electrode; The colelctor electrode of the 4th triode is connected to the control pole of the 3rd FET, and the emitter stage of the 4th triode is connected to 5 mouthfuls of photoelectrical coupler; The source electrode of the base stage of the 4th triode, the 46 resistance, the 3rd FET is connected successively; 47 resistance is serially connected with between 5 mouthfuls of photoelectrical coupler and the source electrode of the 3rd FET; The positive pole of the 27 diode is connected to the drain electrode of the 3rd FET, and the negative pole of the 27 diode is connected to 8 mouthfuls of photoelectrical coupler and 1 mouthful of the 11 terminals; The positive pole of the 62 electric capacity is connected to 8 mouthfuls of photoelectrical coupler, and the negative pole of the 62 electric capacity is connected to the emitter stage of the 4th triode; Inductance is serially connected with 2 mouthfuls of the 27 diode cathode and the 11 terminals; 37 capacitance cathode is connected to 1 mouthful of the 11 terminals, and the negative pole of 37 electric capacity is connected to 2 mouthfuls of the 11 terminals; Between 1 mouthful and 2 mouthfuls of the 11 terminals that fan is serially connected in the 11 terminals.
moreover, precision current Circuit tuning mainly comprises: sense current terminal, big current end, small area analysis end, error output, the ten four to ten six operational amplifiers, 33 operational amplifier, 70th the five to nine ten one resistance, 113 resistance, 416 resistance, 506 resistance, 501st the ten to five hundred one ten three resistance, 515 resistance, 630 resistance, second to the 3rd adjustable resistance, 15 to the 19 electric capacity, 8th diode group, 13 diode group, 12 diode, 14 diode, 7th to the 8th Zener diode, 27 FET,
big current end, the 86 resistance, the 87 resistance, the 89 resistance, the 88 resistance, sense current terminal are connected successively; The negative pole of the 19 electric capacity is connected to the node between the 88 resistance and the 89 resistance; Between the positive pole that 92 resistance is serially connected in the 19 electric capacity and the negative pole of the 14 diode, the positive pole of the 14 diode is connected to error output; 416 resistance is serially connected between big current end and ground wire; 2 mouthfuls of nodes be connected between the 86 resistance and the 87 resistance of the 33 operational amplifier, 3 mouthfuls of 33 operational amplifier are connected to ground wire, and 1 mouthful of 33 operational amplifiers is connected to the node between the 87 resistance and the 89 resistance; The movable end of the 3rd adjustable resistance and stiff end 1 also connect rear access ground wire, and the stiff end 3 of the 3rd adjustable resistance is connected and to be connected to 2 mouthfuls of the 33 operational amplifier after the 630 resistance; The positive pole of the 13 diode group and negative pole also access the negative pole of the 19 electric capacity, access ground wire after dynode series connection the 90 resistance of the 13 diode group; 6 mouthfuls of tenth four-operational amplifier are connected to the negative pole of the 19 electric capacity, 5 mouthfuls of access ground wires of the tenth four-operational amplifier, and 7 mouthfuls of the tenth four-operational amplifier are connected to the negative pole of the 14 diode; The positive pole of the 8th Zener diode is connected to the dynode of the 13 diode group, and the negative pole of the 8th Zener diode is connected to the negative pole of the 14 diode; The negative pole of the negative pole of the 18 electric capacity, the 506 resistance, the 50 diode is connected successively, and the positive pole of the 50 diode is connected to the positive pole of the 18 electric capacity; The negative pole of the 18 diode is also connected to the negative pole of the 19 electric capacity, and the positive pole of the 18 diode is also connected to the negative pole of the 14 diode; 91 resistor coupled in parallel is in the 18 electric capacity two ends;
77 resistance, the 78 resistance, the 79 resistance, the 16 electric capacity negative pole are connected successively, 16 capacitance cathode, the 82 resistance, the 12 diode cathode are connected successively, and the 12 diode cathode, the 113 resistance, error output are connected successively; 510 resistance is connected to the movable end 3 of the second adjustable resistance; The movable end 1 of small area analysis end, the 511 resistance, the second adjustable resistance is connected successively; 5 mouthfuls of 15 operational amplifier are connected to the movable end of the second adjustable resistance, 6 mouthfuls of 15 operational amplifier are connected to 7 mouthfuls of the 15 operational amplifier, 7 mouthfuls of the 15 operational amplifier with the 515 resistant series after be connected to the negative pole of the 16 electric capacity; 512 resistance, 513 resistance, ground wire are connected successively; Between the source electrode that 513 resistance is also serially connected in the 27 FET and the control pole of the 27 FET, the drain electrode of the 27 FET is connected to the node between the 77 resistance and the 78 resistance; The negative pole of the 16 electric capacity is connected to after sense current terminal series connection the 75 resistance; The positive pole of the 8th diode group and the negative pole of the 8th diode group also connect the negative pole of rear access the 16 electric capacity, access ground wire after dynode series connection the 80 resistance of the 8th diode group; 3 mouthfuls of 16 operational amplifier are connected to ground wire, and 2 mouthfuls of the 16 operational amplifier are connected to the negative pole of the 16 electric capacity, and 1 mouthful of the 16 operational amplifier is connected to the positive pole of the 12 diode; The positive pole of the 7th Zener diode is connected to the dynode of the 8th diode group, and the negative pole of the 7th Zener diode is connected to the positive pole of the 12 diode; The positive pole of the 15 electric capacity is connected to the positive pole of the 12 diode, and the negative pole of the 15 electric capacity is connected to the negative pole of the 16 electric capacity.
further, above-mentioned a kind of control method becoming more meticulous Multifunctional welding welding system mainly comprises the following steps:
a. the output voltage/electric current of sampling unit to welding module is sampled, and generation sampled signal is transferred to control module;
b. control module judges welds types according to sampled signal;
c. control module exports corresponding pulse-width modulation control signal according to welds types to power module and small area analysis Voltage stabilizing module;
d. power module exports corresponding pulse voltage/electric current according to pulse-width modulation control signal; Small area analysis Voltage stabilizing module exports corresponding stabilising arc voltage according to pulse-width modulation control signal.
further, further comprising the steps of after steps d:
e. temperature sense circuit sends the real time temperature signal of power module to control module;
f. control module controls the revolution of fan according to real time temperature signal.
another step, further comprising the steps of after step e:
g. the real time temperature signal that exported by temperature sense circuit of fault induction module and setting contrast;
if temperature value is more than or equal to setting in live signal, then fault induction module sends fault-signal to control module;
if temperature value is less than described setting, then proceed contrast.
described control module, according to the described fault-signal of input, stops exporting described pulse-width modulation control signal.
one becomes more meticulous Multifunctional welding welding system, is provided with for implementing the welding module welded; Be arranged on described welding module, for the sampling unit of sampling to welding Current Voltage; Be electrically connected with sampling unit, for the employing signal output pulse width modulator control signal exported according to sampling unit and the control module controlled other modules in the Multifunctional welding welding system that becomes more meticulous; The power module be electrically connected respectively with control module, sampling unit, welding module; The present invention by being in series with small area analysis stable module between welding module and control module, and the switching frequency of more than 60KHZ is adopted at power module, power module of the present invention is made to have the control accuracy of dynamically ringing speed and Geng Gao faster, better compatible multiple welding function;
and then add the stability that small area analysis thermal module can ensure electric arc in small area analysis welding, avoid causing current interruption because of exporting unstable in power module.And the control method of a kind of Multifunctional welding welding system that becomes more meticulous of corresponding the present invention has above-mentioned advantage too.
Accompanying drawing explanation
for ease of illustrating, the present invention is described in detail by following detailed description of the invention and accompanying drawing.
fig. 1 is the composition structural representation of a kind of Multifunctional welding welding system that becomes more meticulous of the present invention;
fig. 2 is the modified node method schematic diagram of a kind of Multifunctional welding welding system that becomes more meticulous of the present invention;
fig. 3 is the complete lattice schematic diagram of a kind of Multifunctional welding welding system that becomes more meticulous of the present invention;
fig. 4 is the current feedback circuit structure chart of a kind of Multifunctional welding welding system that becomes more meticulous of the present invention;
fig. 5 is the voltage feedback circuit structure chart of a kind of Multifunctional welding welding system that becomes more meticulous of the present invention;
fig. 6 is the pulse current sampling unit structure chart of a kind of Multifunctional welding welding system that becomes more meticulous of the present invention;
fig. 7 is the temperature sense circuit structure diagram of a kind of Multifunctional welding welding system that becomes more meticulous of the present invention;
fig. 8 is the fan drive circuit structure chart of a kind of Multifunctional welding welding system that becomes more meticulous of the present invention;
fig. 9 is the precision current Circuit tuning structure chart of a kind of Multifunctional welding welding system that becomes more meticulous of the present invention;
figure 10 is the control method basic procedure schematic diagram of a kind of Multifunctional welding welding system that becomes more meticulous of the present invention;
figure 11 is the control method modified flow schematic diagram of a kind of Multifunctional welding welding system that becomes more meticulous of the present invention.
Detailed description of the invention
in order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.
as illustrated in the accompanying drawings from 1 to 3, one becomes more meticulous Multifunctional welding welding system, is provided with for implementing the welding module welded; Be arranged on welding module, for the sampling unit of sampling to welding current/voltage; Be electrically connected respectively with sampling unit, welding module, for providing the power module of power supply for this Multifunctional welding welding system that becomes more meticulous; Also be provided with and be electrically connected with sampling unit, power module, for storing all kinds of weld signature parameter, and according to the control module that this characteristic parameter controls other modules in the Multifunctional welding welding system that becomes more meticulous; This control module can adopt the systems such as x86 microcomputer of the prior art or single-chip microcomputer, and adopt factory to write in advance and the mode of real-time update arranges various welds types in using characteristic parameter, by organizing contact jaw, modules, circuit in the present invention are controlled more, reach and judge welds types according to this characteristic parameter, and the voltage keeping electric power source pair of module welding module to export and electric current meet the outer indicatrix of corresponding welds types.Memory in control module can use read-only storage or scratch pad memory or both combinations.
control module mainly includes for output pulse width modulator control signal and the main control circuit controlled other modules in this system according to characteristic parameter and is connected with this main control circuit, for the human-computer interactive control circuit that model selection and parameter regulate; Control module and welding module and between be also in series with small area analysis stable module; Small area analysis stable module mainly comprises connects successively: dc source, current-limiting resistance and gauge tap.
further, the temperature sense circuit be connected between control module and power module is also provided with; For monitoring the operating temperature of high-power components in power module, control module can be lowered the temperature or shutdown operation to power module according to the return information of temperature sense circuit.
also be provided with the fan drive circuit be connected respectively with control module and fan, control module controls fan drive circuit lifting according to the hotness signal that temperature sense circuit inputs or reduces the revolution of fan; The work of fan can be stopped when welding system enters energy saver mode or park mode.
also be provided with the fault induction module be connected respectively with temperature sense circuit, control module, when the temperature that temperature sense module detects exceedes setting, fault induction module sends fault-signal to control module, control module stops output pulse width modulator control signal, and power module stops powering to welding module.
further, power module mainly comprises the switch and filter circuit, rectifier bridge, mu balanced circuit, insulated gate bipolar translator power tube inverse changing driving circuit (IGBT inversion driving), main transformer volt circuit, output rectification circuit, out put reactor, secondary insulating grid bipolar-type power pipe inverse changing driving circuit (secondary IGBT inversion driving), Hall element circuit that are arranged in series successively; Mu balanced circuit input has also been arranged in parallel auxiliary power circuit and primary side voltage sensor; Insulated gate bipolar translator power tube inverse changing driving circuit is also provided with the first thermistor; Output rectification circuit is provided with the second thermistor;
temperature sense circuit, one end is connected with first, second thermistor respectively, and one end is connected to main control circuit and connects after fault sensor circuit;
welding module is also provided with: be connected to the high-frequency arc strike control circuit between main control circuit and power module, anti-electric hit manual welding selection circuit, non-melt pole gas protect weldering carry arc selection circuit;
sampling unit is provided with the pulse current sample circuit, current feedback circuit and the voltage feedback circuit that are connected between control module and power module; The comparison with individual features parameter is carried out to control module, to determine welds types for providing the initial voltage/electric current collected; And current/voltage during Real-Time Monitoring welding, make control module control power module output and meet corresponding outer indicatrix.Pulse current sample circuit one end is connected with main control circuit, and one end is connected to the node between main transformer and output rectification circuit; For monitoring pulse current size in electric power main circuit, secondary control module carries out overcurrent protection to power module.
current feedback circuit one end is connected with main control circuit, and one end is connected to Hall element circuit; The current strength that when welding for Real-Time Monitoring, power supply exports, and feed back to control module.
voltage feedback circuit one end is connected with main control circuit, and one end is connected to the node between Hall element circuit and the positive pole of welding module; The voltage amplitude that when welding for Real-Time Monitoring, power supply exports, and feed back to control module.
high-frequency arc strike control circuit is also provided with striking coil, and striking coil one end is connected with output rectification circuit, and one end is connected with the negative pole of welding module; For under the control of high-frequency arc strike control circuit, for welding module excites electric arc.
anti-electric manual welding selection circuit one end of hitting is connected with main control circuit, and one end is connected to the node between output rectification circuit and striking coil; For coordinating main control circuit to open manual welding pattern, and preventing electric leakage from producing, ensureing the safety of operator during welding operation.
non-melt pole gas guarantor weldering is carried arc selection circuit one end and is connected with main control circuit, and one end is connected to the node between output rectification circuit and striking coil; For coordinating main control circuit to open non-consumable gas shielded arc welding pattern, and arc stiffness under controlling this pattern.
fault induction module is also provided with the main circuit sensor being connected to node between insulated gate bipolar translator power tube inverter circuit and main transformer; For monitor insulated gate bipolar translator power tube inverter circuit input main transformer in electric current and voltage condition, feed back to main control circuit when overcurrent or overvoltage.
human-computer interactive control circuit be provided be connected to main control circuit respectively precision current Circuit tuning, with reference to regulate and mode selection switch; For realize bond pattern manual selection and for meeting the welding characteristic curve under AD HOC, manual fine-tuning welding machine export electric current and voltage.
main control circuit is also connected with magnetic valve by air valve control circuit, for the release of Control protection gas;
main control circuit is also connected with secondary insulating grid bipolar-type power pipe inverse changing driving circuit by drive circuit; Drive circuit one end is connected to the node in rectifier bridge and mu balanced circuit; Fault induction module one end is in parallel with main control circuit accesses drive circuit.For driving secondary insulating grid bipolar-type power pipe inverse changing driving circuit, the current/voltage exporting welding module to is adjusted.
further, power module adopts the switching frequency of more than 60KHZ; Power module according to pulse-width modulation circuit control signal to welding module voltage pulse output and pulse current.
the preferred following circuit structure of physical circuit:
as shown in Figure 4, current feedback circuit is made up of partial circuit in Hall element HCT1 and MCU1 main control circuit.Hall element HCT1 is transformed into voltage signal in the ratio of 100A/2V current signal and is delivered in MCU1 by operational amplifier IC1, IC2, IC3, IC4 and the output current signal I_SENSE/I_SE such as resistance R15-R29, R109, R110, electric capacity C3-C7, C321, C322, diode D46, D2, D3.
improve as one, voltage feedback circuit mainly comprises: the first terminals CN1, first to fourth operational amplifier IC1-IC4, 17 to the 18 operational amplifier IC17-IC18, 15 to the 29 resistance R15-R29, 109 to the 110 resistance R109-R110, 3rd to the 7th electric capacity C3-C7, 321 to the 322 electric capacity C321-C322, second to the 3rd diode D2-D3, 46 diode group D46, 5th test lead TP5 and se current terminal I-SE, sense current terminal I-SENSE and current detecting end I-DET,
15 resistance R15 one end is connected to the first terminals CN13 mouth, the other end is connected to the negative pole of the second diode group D2, and the positive pole of the second diode group D2, the 18 resistance R18, the 19 resistance R19, the 109 resistance R109, the 110 resistance R110, ground wire are connected successively; 22 resistance R22, the 24 resistance R24, the 26 resistance R26, the 27 resistance R27, the 17 operational amplifier IC17, the 18 operational amplifier IC18, current detecting end I-DET are connected on the node between the 19 resistance R19 and the 109 resistance R109 after connecting successively; The positive pole of the 3rd electric capacity C3 is connected to the first terminals CN13 mouth, and the negative pole of the 3rd electric capacity C3 is connected to 4 mouthfuls of the first terminals CN1; 5th test lead TP5 and sense current terminal I-SENSE is attempted by the node between the 19 resistance R19 and the 22 resistance R22; 23 resistance R23 one end is connected to the 5th test lead TP5, and one end is connected to institute's ground wire; 16 resistance R16 is parallel to the both positive and negative polarity of the second diode group D2; 17 resistance R17 one end is connected to the first terminals CN13 mouth, and the other end is connected to the node between the 18 resistance R18 and the 19 resistance R19; The positive pole of the 4th electric capacity C4 is connected to 6 mouthfuls of the second operational amplifier IC2, and the negative pole of the 4th electric capacity C4 is connected to 7 mouthfuls of the second operational amplifier IC2; 21 resistance R21 one end is connected to the positive pole of the 5th electric capacity C5, and the other end is connected to one end of the 22 resistance R22, and the negative pole of the 5th electric capacity C5 is connected to the other end of the 22 resistance R22; 3rd diode D3 positive pole is connected to the node between the 24 resistance R24 and the 26 resistance R26, and the 3rd diode D3 negative pole is connected to the node between the 26 resistance R26 and the 27 resistance R27; After 6th electric capacity C6 is in parallel with the 7th electric capacity C7, common positive pole is connected to the negative pole of the 3rd diode D3, and common negative pole is connected to ground wire; The positive pole of the 321 electric capacity C321 is connected to 1 mouthful of the first terminals CN1, and the negative pole of the 321 electric capacity C321 is connected to ground wire; The negative pole of the 322 electric capacity C322 is connected to 2 mouthfuls of the first terminals CN1, and the positive pole of the 322 electric capacity C322 is connected to ground wire; 2 mouthfuls of first operational amplifier IC1 are connected to the second diode group D2 negative pole, and 1 mouthful of the first operational amplifier IC1 is connected to the dynode of the second diode group D2, access ground wire after 3 mouthfuls of serial connection the 28 resistance R28 of the first operational amplifier IC1; 6 mouthfuls of nodes be connected between the 18 resistance R18 and the 19 resistance R19 of the second operational amplifier IC2,7 mouthfuls of second operational amplifier IC2 are connected to sense current terminal I-SENSE, access ground wire after 5 mouthfuls of serial connection the 29 resistance R29 of the second operational amplifier IC2; 6 mouthfuls of 3rd operational amplifier IC3 are connected to the node between the positive pole of 21 resistance R21 and the 5th electric capacity C5; 7 mouthfuls of 3rd operational amplifier IC3 are connected to the positive pole of the 3rd diode D3; 5 mouthfuls of 3rd operational amplifier IC3 are connected to the node between the negative pole of the 22 resistance R22 and the 5th electric capacity C5; 2 mouthfuls of four-operational amplifier IC4 connect access se current terminal I-SE afterwards with 1 mouthfuls of this operational amplifier; Node between 3 mouthfuls of access the 109 resistance R109 and the 110 resistance R110 of four-operational amplifier IC4; The dynode of the 46 diode group D46 accesses 3 mouthfuls of the first terminals CN1;
as shown in Figure 5, voltage feedback circuit is made up of partial circuit in MCU1 main control circuit.Voltage signal presses the step-down of 10V/2V through transformer, direct current signal is transformed into after bridge rectifier diode D42-D45, after voltage signal follower IC5, IC7, V_SENSE/V_SE two groups of signals are delivered in MCU1, through voltage signal follower IC6, ARC-ON starting the arc index signal is delivered in MCU1.
concrete, voltage feedback circuit mainly comprises: the 31 terminals CN31, the 5th to the 7th voltage signal follower IC5-IC7, the first to the 3rd resistance R1-R3, the 8th to the 14 resistance R8-R14, the first to the second electric capacity C1-C2, the first diode D1, the 42 to the 45 diode, the 4th test lead TP4, sense voltage end V-SENSE, se voltage end V-SE, striking indication end ARC-ON;
the negative pole of the 42 diode D42 and the negative pole of the 44 diode D44 also connect, the positive pole of the 43 diode D43 and the positive pole of the 45 diode D45 also connect rear access ground wire, the positive pole of the 42 diode D42 is connected to the negative pole of the 43 diode D43, the positive pole of the 44 diode D44 is connected to the negative pole of the 45 diode D45, forms the first bridge rectifier; 3 mouthfuls of 31 terminals CN31 are connected to the positive pole of the 42 diode D42, and 4 mouthfuls of the 31 terminals CN31 are connected to the positive pole of the 44 diode D44; First resistance R1 is connected in parallel on the negative pole of the 44 diode D44 and the positive pole of the 45 diode D45; Second resistance R2 is connected in parallel on the first resistance R1 two ends after being connected in series with the 3rd resistance R3; The positive pole of the first electric capacity C1 is connected to the node between the 3rd resistance R3 and the second resistance R2, and the negative pole of the first electric capacity C1 is connected to ground wire; 3 mouthfuls of nodes be connected between the second resistance R2 and the 3rd resistance R3 of the 5th voltage signal follower IC5,2 mouthfuls of the 5th voltage signal follower IC5 and be connected to the 4th test lead TP4 and sense voltage end V-SENSE after being connected to 1 mouthful and node after connecing; The 4th test lead TP4 is connected to after 3 mouthfuls of 6th voltage signal follower IC6 are connected in series with the tenth resistance R10, be connected to the 4th test lead TP4 after 2 mouthfuls of 6th voltage signal follower IC6 are connected in series with the 9th resistance R9,1 mouthful of the 6th voltage signal follower IC6 is connected to striking indication end ARC-ON; The positive pole of the second electric capacity C2 is connected to the node between the 11 resistance and 1 mouthful of the 5th voltage signal follower IC5, and the negative pole of the second electric capacity C2 is connected to ground wire; 11 resistance R11 one end is connected to the 4th test lead TP4, and the other end is connected to ground wire; The negative pole of the first diode D1 is connected to 3 mouthfuls of the 6th voltage signal follower IC6, is connected to 1 mouthful of the 6th voltage signal follower IC6 after the positive pole of the first diode D1 is connected in series with the 12 resistance R12; 4th test lead TP4, the 13 resistance R13, the 14 resistance R14, ground wire are connected successively; 5 mouthfuls of nodes be connected between the 13 resistance R13 and the 14 resistance R14 of the 7th voltage signal follower IC7,6 mouthfuls of the 7th voltage signal follower IC7 connect access se voltage end V-SE afterwards with 7 mouthfuls of the 7th voltage signal follower IC7;
as shown in Figure 6, pulse current sampling unit is by transformer CT2, CT3, fast recovery diode D32-D39, resistance R214, R213, R304, R303, electric capacity C64, C65 and voltage follower IC9, IC10, diode D30, D31 composition, output signal CT sends in MCU1.
concrete, pulse sampling circuit mainly comprises: the 4th terminals CN4, the 9th to the tenth voltage follower IC9-IC10, the 303 to the 304 resistance R303-R304, the 213 to the 214 resistance R213-R214, the 64 to the 67 electric capacity C264-C267, the 30 to the 31 diode D30-D31, the 32 to the 39 fast recovery diode D32-D39, the second to the 3rd transformer CT2-CT3, output signal end CT;
32 to the 35 fast recovery diode forms the second bridge rectifier; 3 mouthfuls of 4th terminals CN4 are connected to the positive pole of the 34 fast recovery diode D34, and 4 mouthfuls of the 4th terminals CN4 are connected to the positive pole of the 32 fast recovery diode D32; After 65 electric capacity C65 is in parallel with 213 resistance R213 with the 303 resistance R303, the negative pole of this electric capacity is connected to the positive pole of the 33 fast recovery diode D33, and the positive pole of this electric capacity is connected to the negative pole of the 32 fast recovery diode D32; 5 mouthfuls of 9th voltage follower IC9 are connected to the negative pole of the 32 fast recovery diode D32, and 6 mouthfuls of the 9th voltage follower IC9 are connected to output signal end CT, and 7 mouthfuls of the 9th voltage follower IC9 are connected to the positive pole of the 30 diode D30; The negative pole of the 30 diode D30 is connected to output signal end CT;
36 to the 39 fast recovery diode composition the 3rd bridge rectifier; 1 mouthful of 4th terminals CN4 is connected to the positive pole of the 38 fast recovery diode D38, and 2 mouthfuls of the 4th terminals CN4 are connected to the positive pole of the 36 fast recovery diode D36; After 64 electric capacity C64 is in parallel with 214 resistance R214 with the 304 resistance R304, the negative pole of this electric capacity is connected to the positive pole of the 37 fast recovery diode D37, and the positive pole of this electric capacity is connected to the negative pole of the 36 fast recovery diode D36; 3 mouthfuls of tenth voltage follower IC10 are connected to the negative pole of the 36 fast recovery diode D36, and 2 mouthfuls of the tenth voltage follower IC10 are connected to output signal end CT, and 1 mouthful of the tenth voltage follower IC10 is connected to the positive pole of the 31 diode D31; The negative pole of the 31 diode D31 is connected to output signal end CT; 8 mouthfuls of tenth voltage follower IC10 are accessed positive 15V normal voltages and are connected to the positive pole of the 66 electric capacity C66, and the negative pole of this electric capacity is connected with ground wire; 4 mouthfuls of accesses of the tenth voltage follower IC10 are born 15V normal voltage and are connected to the positive pole of the 67 electric capacity C67, and the negative pole of this electric capacity is connected with ground wire; The positive pole of the 35 fast recovery diode D35 is connected with ground wire with after the positive pole parallel connection of the 37 fast recovery diode D37.
as shown in Figure 7, temperature sense circuit, is made up of thermistor TH1 and TH2, operational amplifier IC11, IC12, IC13 resistance R294-R309, electric capacity C71-C76 and C131, diode D28, D29 etc.;
concrete, temperature sense main circuit will comprise: the first to the second thermistor TH1-TH2, the 8th to the 9th terminals CN8-CN9, the 11 to the 13 operational amplifier IC11-IC13, the 294 to the 309 resistance, the 71 to the 76 electric capacity R71-R76, the 131 electric capacity R131, the 28 to the 29 diode D28-D29, the first to the second temperature monitoring end TEMP1-TEMP2;
between 1 mouthful and 2 mouthfuls that first thermistor TH1 is serially connected with the 8th terminals CN8, between 1 mouthful and 2 mouthfuls that the second thermistor TH2 is serially connected with the 9th terminals CN9; The positive pole of the 71 electric capacity C71 is connected to 2 mouthfuls of the 8th terminals CN8, and the negative pole of this electric capacity is connected with ground wire; The positive pole of the 74 electric capacity C74 is connected to 2 mouthfuls of the 9th terminals CN9, and the negative pole of this electric capacity is connected with ground wire; 72 electric capacity C72 is connected to 1 mouthful of the 8th terminals CN8, and the negative pole of this electric capacity is connected with ground wire; The positive pole of the 75 electric capacity C75 is connected to 1 mouthful of the 9th terminals CN9, and the negative pole of this electric capacity is connected with ground wire; After 294 resistance R294, the 295 resistance R295, the 297 resistance R297 connect successively, equal ground wire is accessed at two ends; After 303 resistance R303, the 304 resistance R304, the 305 resistance R305 connect successively, equal ground wire is accessed at two ends; After 296 resistance R296, the 298 resistance R298 connect successively, equal ground wire is accessed at two ends; 1 mouthful of 8th terminals CN8 is connected to the node between 294 resistance R294 and 295 resistance R295,2 mouthfuls of 8th terminals CN8 are connected to the node between 295 resistance R295 and 297 resistance R297,1 mouthful of 9th terminals CN9 is connected to the node between 303 resistance R303 and 304 resistance R304,2 mouthfuls of nodes be connected between 304 resistance R304 and 305 resistance R305 of the 9th terminals CN9; The positive pole of the 73 electric capacity C73 is connected to the node between the 298 resistance R298 and the 296 resistance R296, and the negative pole of the 73 electric capacity C73 is connected to ground wire; 3 mouthfuls of nodes be connected between the 296 resistance R296 and 298 resistance R298 of the 11 operational amplifier IC11,2 mouthfuls of the 11 operational amplifier IC11 are connected to 1 mouthful of this operational amplifier; 2 mouthfuls of 8th terminals CN8, the 299 resistance R299, the 301 resistance R301,5 mouthfuls of the 12 operational amplifier IC12 connect successively; The positive pole of the 131 electric capacity R131 is connected to the node in the middle of the 299 resistance R299 and the 301 resistance R301, and the negative pole of this electric capacity connects ground wire; Between 1 mouthful and 6 mouthfuls of the 12 operational amplifier IC12 that 300 resistance R300 is serially connected in the 11 operational amplifier IC11; The positive pole of the 28 diode D28 is connected to 7 mouthfuls of the 12 operational amplifier IC12, and the negative pole of the 28 diode D28 is connected to the first temperature monitoring end TEMP1; 302 resistance is serially connected between 6 mouthfuls of the 12 operational amplifier IC12 and the negative pole of the 28 diode; 2 mouthfuls of 9th terminals CN9, the 307 resistance, the 308 resistance, 10 mouthfuls of the 13 operational amplifier IC13 connect successively; The negative pole of the 76 electric capacity C76 is connected to ground wire, and the positive pole of this electric capacity is connected to the node between the 307 resistance R307 and the 308 resistance R308; Between 1 mouthful and 9 mouthfuls of the 13 operational amplifier IC13 that 306 resistance R306 is serially connected in the 11 operational amplifier IC11; 29 diode D29 positive pole is connected to 8 mouthfuls of the 13 operational amplifier IC13, and the negative pole of the 29 diode D29 is connected to the second temperature monitoring end TEMP2; 309 resistance R309 be serially connected with 9 mouthfuls of the 13 operational amplifier IC13 with the negative pole of the 29 diode D29;
as shown in Figure 8, the welding supply of plasma cutting inverter is because be responsible for the inversion conversion process of whole welding energy, so the power switching device in its power supply is thermal losses source maximum in device, have very high temperature rise during power switching device work, needing certain cooling infrastructure is its radiating and cooling.
the present invention be the fan FAN drive circuit of band sleep mode that adopts as cooling system, this fan drive circuit: the photoelectrical coupler PHC3 be connected by MCU1 circuit, triode Q3, Q4, resistance R45-R50, electric capacity C37, C38, C62, diode D27, D202, ZD4, triode Q3, Q4, inductance L 1 and axial flow blower FAN etc. form.
its operation principle is, and radiator temperature amount is transformed into voltage signal amount by: temperature sensor TH1, TH2 be placed on the insulated gate power switching device group radiator in power module, deliver to the ADC port of digital processing system MCU1, after MCU1 process, export control signal to go to drive photoelectrical coupler PHC3, go to control axial flow blower FAN.When radiator temperature is lower need not carry out forced air cooling time, MCU1 will allow axial flow blower FAN stall. when radiator temperature reaches certain value, MCU1 will send instruction, allow axial flow blower FAN rotate, to heat abstractor forced air cooling.Save on the one hand electric energy, improve efficiency, on the other hand also can extending shaft flow fan service life.
concrete, fan drive circuit mainly comprises: photoelectrical coupler PHC3, the 11 terminals CN11, the 45 to the 50 resistance R45-R50, the 37 to the 38 electric capacity C37-C38, the 62 electric capacity C62, the 27 diode D27, the 202 diode D202, the 4th Zener diode ZD4, the 3rd FET Q3, the 4th triode Q4, inductance L 1, signal input part FAN-OUT and fan FAN;
signal input part FAN-OUT, the 50 resistance R59, the 49 resistance R49,2 mouthfuls of photoelectrical coupler PHC3 connect successively; 3 mouthfuls of photoelectrical coupler PHC3 are connected to the node between the 50 resistance R59 and the 49 resistance R49, and 6 mouthfuls of photoelectrical coupler PHC3 are connected to 7 mouthfuls of this photoelectrical coupler PHC3; 38 electric capacity C38 positive pole is connected to 8 mouthfuls of photoelectrical coupler PHC3, and the negative pole of the 38 electric capacity C38 is connected to 5 mouthfuls of photoelectrical coupler PHC3; 44 resistance R44 one end is connected to 7 mouthfuls of photoelectrical coupler PHC3, and the other end is connected to the negative pole of the 202 diode D202, and the positive pole of the 202 diode D202 is connected to the control pole of the 3rd FET Q3; 48 resistance R48 is serially connected between 7 mouthfuls of photoelectrical coupler PHC3 and the control pole of the 3rd FET Q3; The positive pole of the 4th Zener diode ZD4 is connected to 5 mouthfuls of photoelectrical coupler PHC3, and the negative pole of the 4th Zener diode ZD4 is connected to the positive pole of the 202 diode D202; Between the control pole that 45 resistance R45 is serially connected with the 3rd FET Q3 and source electrode; The colelctor electrode of the 4th triode Q4 is connected to the control pole of the 3rd FET Q3, and the emitter stage of the 4th triode Q4 is connected to 5 mouthfuls of photoelectrical coupler PHC3; The source electrode of the base stage of the 4th triode Q4, the 46 resistance R46, the 3rd FET Q3 is connected successively; 47 resistance R47 is serially connected with between 5 mouthfuls of photoelectrical coupler PHC3 and the source electrode of the 3rd FET Q3; The positive pole of the 27 diode D27 is connected to the drain electrode of the 3rd FET Q3, and the negative pole of the 27 diode D27 is connected to 8 mouthfuls of photoelectrical coupler PHC3 and 1 mouthful of the 11 terminals CN11; The positive pole of the 62 electric capacity C62 is connected to 8 mouthfuls of photoelectrical coupler PHC3, and the negative pole of the 62 electric capacity C62 is connected to the emitter stage of the 4th triode Q4; Inductance L 1 is serially connected with 2 mouthfuls of the 27 diode D27 positive pole and the 11 terminals CN11; 37 electric capacity C37 positive pole is connected to 1 mouthful of the 11 terminals CN11, and the negative pole of 37 electric capacity C37 is connected to 2 mouthfuls of the 11 terminals CN11; Between 1 mouthful and 2 mouthfuls of the 11 terminals CN11 that fan FAN is serially connected in the 11 terminals CN11.
as shown in Figure 9, precision current Circuit tuning by big current LIMIT and small area analysis MINI two overlap Circuit tuning export to+ERROR hold.Circuit comprises: IC 33, IC14-IC16, resistance R75-R91, R113, R416, R506, R510-R513, R515, R630, adjustable resistance VR2, VR3, electric capacity C15-19, diode D8, D12-14, ZD7, ZD8.
by regulating VR3, obtain satisfactory signal amplitude to be added to LIMIT signal, be input to the inverting input of operational amplifier IC33 together, obtain the voltage signal of gain and current feedback signal I-SENSE to be superimposed and to be input to the inverting input of operational amplifier IC14, the amplification voltage signal of gain filters out positive signal through diode D14, negative signal is outputted to+ERROR end.Same reason MINI signal, through overregulating VR2, is input to operational amplifier IC15, IC16, and the amplification voltage signal obtaining gain filters out negative signal through diode D12, positive signal is outputted to+ERROR end.
concrete, precision current Circuit tuning mainly comprises: sense current terminal I-SENSE, big current end LIMIT, small area analysis end MINI, error output+ERROR, the ten four to ten six operational amplifier IC14-IC16, 33 operational amplifier IC33, 70th the five to nine ten one resistance R75-R91, 113 resistance R113, 416 resistance R416, 506 resistance R506, 501st the ten to five hundred one ten three resistance R510-R513, 515 resistance R515, 630 resistance R630, second to the 3rd adjustable resistance VR2-VR3, 15 to the 19 electric capacity R15-R19, 8th diode group D8, 13 diode group D13, 12 diode D12, 14 diode D14, 7th to the 8th Zener diode ZD7-ZD8, 27 FET Q27,
big current end LIMIT, the 86 resistance R86, the 87 resistance R87, the 89 resistance R89, the 88 resistance R88, sense current terminal I-SENSE connect successively; The negative pole of the 19 electric capacity C19 is connected to the node between the 88 resistance R88 and the 89 resistance R89; Between the positive pole that 92 resistance R92 is serially connected in the 19 electric capacity C19 and the negative pole of the 14 diode D14, the positive pole of the 14 diode D14 is connected to error output+ERROR; 416 resistance R416 is serially connected between big current end LIMIT and ground wire; 2 mouthfuls of nodes be connected between the 86 resistance R86 and the 87 resistance R87 of the 33 operational amplifier IC33,3 mouthfuls of 33 operational amplifier IC33 are connected to ground wire, 1 mouthful of node be connected between the 87 resistance R87 and the 89 resistance R89 of the 33 operational amplifier IC33; The movable end of the 3rd adjustable resistance VR3 and stiff end 1 also connect rear access ground wire, and the stiff end 3 of the 3rd adjustable resistance VR3 is connected and to be connected to 2 mouthfuls of the 33 operational amplifier IC33 after the 630 resistance R630; The positive pole of the 13 diode group D13 and negative pole also access the negative pole of the 19 electric capacity C19, access ground wire after dynode series connection the 90 resistance R90 of the 13 diode group D13; 6 mouthfuls of tenth four-operational amplifier IC14 are connected to the negative pole of the 19 electric capacity C19,5 mouthfuls of access ground wires of the tenth four-operational amplifier IC14, and 7 mouthfuls of the tenth four-operational amplifier IC14 are connected to the negative pole of the 14 diode D14; The positive pole of the 8th Zener diode ZD8 is connected to the dynode of the 13 diode group D13, and the negative pole of the 8th Zener diode ZD8 is connected to the negative pole of the 14 diode D14; The negative pole of the negative pole of the 18 electric capacity C18, the 506 resistance R506, the 50 diode D50 is connected successively, and the positive pole of the 50 diode D50 is connected to the positive pole of the 18 electric capacity C18; The negative pole of the 18 diode C18 is also connected to the negative pole of the 19 electric capacity C19, and the positive pole of the 18 diode C18 is also connected to the negative pole of the 14 diode D14; 91 resistance R91 is parallel to the 18 electric capacity C18 two ends;
77 resistance R77, the 78 resistance R78, the 79 resistance R79, the 16 electric capacity C16 negative pole are connected successively, 16 electric capacity C16 positive pole, the 82 resistance R82, the 12 diode D12 positive pole are connected successively, and the 12 diode D12 negative pole, the 113 resistance R113, error output+ERROR are connected successively; 510 resistance R510 is connected to the movable end 3 of the second adjustable resistance VR2; The movable end 1 of small area analysis end MINI, the 511 resistance R511, the second adjustable resistance VR2 is connected successively; 5 mouthfuls of 15 operational amplifier IC15 are connected to the movable end of the second adjustable resistance VR2,6 mouthfuls of 15 operational amplifier IC15 are connected to 7 mouthfuls of the 15 operational amplifier IC15, and 7 mouthfuls of the 15 operational amplifier IC15 are connected to the negative pole of the 16 electric capacity C16 after connecting with the 515 resistance R515; 512 resistance R512,513 resistance R513, ground wire are connected successively; Between the source electrode that 513 resistance R513 is also serially connected in the 27 FET Q27 and the control pole of the 27 FET Q27, the drain electrode of the 27 FET Q27 is connected to the node between the 77 resistance R77 and the 78 resistance R78; The negative pole of the 16 electric capacity C16 is connected to after sense current terminal I-SENSE series connection the 75 resistance; The positive pole of the 8th diode group D8 and the negative pole of the 8th diode group D8 also connect the negative pole of rear access the 16 electric capacity C16, access ground wire after dynode series connection the 80 resistance R80 of the 8th diode group D8; 3 mouthfuls of 16 operational amplifier IC16 are connected to ground wire, and 2 mouthfuls of the 16 operational amplifier IC16 are connected to the negative pole of the 16 electric capacity C16, and 1 mouthful of the 16 operational amplifier IC16 is connected to the positive pole of the 12 diode D12; The positive pole of the 7th Zener diode ZD7 is connected to the dynode of the 8th diode group D8, and the negative pole of the 7th Zener diode ZD7 is connected to the positive pole of the 12 diode D12; The positive pole of the 15 electric capacity C15 is connected to the positive pole of the 12 diode D12, and the negative pole of the 15 electric capacity C15 is connected to the negative pole of the 16 electric capacity C16.
as shown in accompanying drawing 10-11, the control method of the multiple welding function of above-mentioned a kind of multi-functional welding system compatible that becomes more meticulous, mainly comprises the following steps:
a. the output voltage/electric current of sampling unit to welding module is sampled, and generation sampled signal is transferred to control module;
b. control module judges welds types according to sampled signal;
c. control module exports corresponding pulse-width modulation control signal according to welds types to power module and small area analysis Voltage stabilizing module;
d. power module exports corresponding pulse voltage/electric current according to pulse-width modulation control signal; Small area analysis Voltage stabilizing module exports corresponding stabilising arc voltage according to pulse-width modulation control signal.
further, further comprising the steps of after steps d:
e. temperature sense circuit sends the real time temperature signal of power module to control module;
f. control module controls the revolution of fan (FAN) according to real time temperature signal.
another step, further comprising the steps of after step e:
g. the real time temperature signal that exported by temperature sense circuit of fault induction module and setting contrast;
if temperature value is more than or equal to setting in live signal, then fault induction module sends fault-signal to control module;
if temperature value is less than described setting, then proceed contrast.
h. described control module is according to the described fault-signal of input, stops exporting described pulse-width modulation control signal.
the present invention controls power module by control module output pulse width modulation signal and exports corresponding weldingvoltage electric current; and match with small area analysis thermal module, can realize: manual welding general acidic welding rod welding function, low hydrogen type basic electrode/Cellulose-Congo red medium welding function), argon arc welding function HF TIG, LIFT TIG), the welding function such as pulsed argon arc welding function, alternating current-direct current argon arc welding function, argon arc spot welding function, carbon dioxide gas arc welding connection function, pulsed MIG welding function and synergic-pulsed MIG welding connection function.To meet the requirement of become more meticulous welding and multi-functional welding technique.
except manual welding function belongs to the automatic startup of start, other welding function all can control start and stop by arc welding gun switch.Also can carry out manual fine-tuning by precision current Circuit tuning, adapt to field requirement when welding.
one of the present invention becomes more meticulous Multifunctional welding welding system (digitlization interlock the multi-functional inverter type welder of BUCK formula pulsewidth modulation, the multi-functional inverter argon arc welding machine of digitalization high frequency), makes it control according to welding functional requirement by the digital processing system of programme-control main control circuit MCU1.The digital processing system of MCU1 is first to electric current and the voltage sample of welding supply output, then calculation process is made, output pulse width modulation circuit signal goes to control insulated gate power switching device break-make, finally welding terminal obtain meeting the external characteristic curve (volt/pacify curve) of welding process requirement needs and certain impulse waveform current/voltage.
simultaneously, also it can be made to control the mode of operation of automatic wire feeder according to welding process requirement by the digital processing system of programme-control MCU1, as controlled wire feed rate by pulse-width modulation circuit output control automatically signal and open, stopping time sequence, accurately control each sequential such as welding process.
the foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all do in the spirit and principles in the present invention any amendment, equivalent to replace and improvement etc., all should be included in protection scope of the present invention.
Claims (10)
1. become more meticulous a Multifunctional welding welding system, is provided with for implementing the welding module welded; Be arranged on described welding module, for the sampling unit of sampling to welding current/voltage; Be electrically connected respectively with described sampling unit, described welding module, for providing the power module of power supply for this Multifunctional welding welding system that becomes more meticulous; It is characterized in that, be also provided with and be electrically connected with described sampling unit, power module, for storing all kinds of weld signature parameter and the control module controlled other modules in the described Multifunctional welding welding system that becomes more meticulous according to this characteristic parameter; Described control module mainly includes for output pulse width modulator control signal and the main control circuit controlled other modules in this system according to described characteristic parameter and is connected with this main control circuit, for the human-computer interactive control circuit that model selection and parameter regulate; Described control module and described welding module and between be also in series with small area analysis stable module; Described small area analysis stable module mainly comprises connects successively: dc source, current-limiting resistance and gauge tap.
2. one becomes more meticulous Multifunctional welding welding system according to claim 1, it is characterized in that, is also provided with the temperature sense circuit be connected between described control module and described power module;
Also be provided with the fan drive circuit be connected respectively with described control module and fan, described control module controls the lifting of described fan drive circuit according to the described hotness signal that described temperature sense circuit inputs or reduces the revolution of fan;
Also be provided with the fault induction module be connected respectively with described temperature sense circuit, described control module, when the temperature that described temperature sense module detects exceedes setting, described fault induction module sends fault-signal to described control module, and described control module stops output pulse width modulator control signal.
3. one becomes more meticulous Multifunctional welding welding system according to claim 2, it is characterized in that, described power module mainly comprises the switch and filter circuit, rectifier bridge, mu balanced circuit, insulated gate bipolar translator power tube inverse changing driving circuit, main transformer volt circuit, output rectification circuit, out put reactor, secondary insulating grid bipolar-type power pipe inverse changing driving circuit, Hall element circuit that are arranged in series successively; Described mu balanced circuit input has also been arranged in parallel auxiliary power circuit and primary side voltage sensor; Described insulated gate bipolar translator power tube inverse changing driving circuit is also provided with the first thermistor; Described output rectification circuit is provided with the second thermistor;
Described temperature sense circuit, one end is connected with first, second thermistor respectively, and one end is connected to described main control circuit and connects after fault sensor circuit;
Described welding module is also provided with: be connected to the high-frequency arc strike control circuit between described main control circuit and described power module, anti-electric hit manual welding selection circuit, non-melt pole gas protect weldering carry arc selection circuit;
Described sampling unit is provided with the pulse current sample circuit, current feedback circuit and the voltage feedback circuit that are connected between described control module and described power module; Described pulse current sample circuit one end is connected with described main control circuit, and one end is connected to the node between described main transformer and described output rectification circuit;
Described current feedback circuit one end is connected with described main control circuit, and one end is connected to described Hall element circuit;
Described voltage feedback circuit one end is connected with described main control circuit, and one end is connected to the node between described Hall element circuit and the positive pole of described welding module;
Described high-frequency arc strike control circuit is also provided with striking coil, and described striking coil one end is connected with described output rectification circuit, and one end is connected with the negative pole of described welding module;
Described anti-electric manual welding selection circuit one end of hitting is connected with described main control circuit, and one end is connected to the node between described output rectification circuit and described striking coil;
Described non-melt pole gas guarantor weldering is carried arc selection circuit one end and is connected with described main control circuit, and one end is connected to the node between described output rectification circuit and described striking coil;
Described fault induction module is also provided with the main circuit sensor being connected to node between described insulated gate bipolar translator power tube inverter circuit and described main transformer;
Described human-computer interactive control circuit be provided be connected to described main control circuit respectively precision current Circuit tuning, with reference to regulate and mode selection switch;
Described main control circuit is also connected with magnetic valve by air valve control circuit, for the release of Control protection gas;
Described main control circuit is also connected with secondary insulating grid bipolar-type power pipe inverse changing driving circuit by drive circuit; Described drive circuit one end is connected to the node in described rectifier bridge and described mu balanced circuit; Described fault induction module one end is in parallel with described main control circuit accesses described drive circuit.
4. one becomes more meticulous Multifunctional welding welding system according to claim 3, it is characterized in that, described power module adopts the switching frequency of more than 60KHZ; Described power module according to described pulse-width modulation circuit control signal to described welding module voltage pulse output and pulse current.
5. one becomes more meticulous Multifunctional welding welding system according to claim 4; it is characterized in that, described voltage feedback circuit mainly comprises: the first terminals, first to fourth operational amplifier, the 17 to the 18 operational amplifier, the 15 to the 29 resistance, the 109 to the 110 resistance, the 3rd to the 7th electric capacity, the 321 to the 322 electric capacity, the second to the 3rd diode, the 46 diode group, the 5th test lead and se current terminal, sense current terminal and current detecting end;
Described 15 resistance one end is connected to the first terminals 3 mouthfuls, one end is connected to the negative pole of described second diode group, and the positive pole of described second diode group, described 18 resistance, described 19 resistance, described 109 resistance, described 110 resistance, ground wire are connected successively; Described 22 resistance, described 24 resistance, described 26 resistance, described 27 resistance, described 17 operational amplifier, described 18 operational amplifier, described current detecting end are connected on the node between the 19 resistance and the 109 resistance after connecting successively; The positive pole of described 3rd electric capacity is connected to described first terminals 3 mouthfuls, and the negative pole of described 3rd electric capacity is connected to 4 mouthfuls of described first terminals; Described 5th test lead and described sense current terminal are attempted by the node between described 19 resistance and described 22 resistance; Described 23 resistance one end is connected to described 5th test lead, and one end is connected to institute's ground wire; Described 16 resistor coupled in parallel is in the both positive and negative polarity of described second diode group; Described 17 resistance one end is connected to described first terminals 3 mouthfuls, and the other end is connected to the node between described 18 resistance and the 19 resistance; The positive pole of described 4th electric capacity is connected to 6 mouthfuls of described second operational amplifier, and the negative pole of described 4th electric capacity is connected to 7 mouthfuls of described second operational amplifier; Described 21 resistance one end is connected to the positive pole of described 5th electric capacity, and the other end is connected to one end of described 22 resistance, and the negative pole of described 5th electric capacity is connected to the other end of described 22 resistance; Described 3rd diode cathode is connected to the node between described 24 resistance and described 26 resistance, and described 3rd diode cathode is connected to the node between the 26 resistance and described 27 resistance; After described 6th electric capacity and described 7th Capacitance parallel connection, positive pole is connected to the 3rd diode cathode, and negative pole is connected to ground wire; The positive pole of described 321 electric capacity is connected to the first terminals 1 mouthful, and the negative pole of described 321 electric capacity is connected to ground wire; The negative pole of described 322 electric capacity is connected to 2 mouthfuls of the first terminals, and the positive pole of described 322 electric capacity is connected to ground wire; 2 mouthfuls of described first operational amplifier are connected to described second diode group negative pole, and 1 mouthful of described first operational amplifier is connected to the dynode of described second diode group, access ground wire after 3 mouthfuls of serial connection the 28 resistance of described first operational amplifier; 6 mouthfuls of described second operational amplifier are connected to the node between described 18 resistance and the 19 resistance, and 7 mouthfuls of described second operational amplifier are connected to sense current terminal, access ground wire after 5 mouthfuls of serial connection the 29 resistance of described second operational amplifier; 6 mouthfuls of described 3rd operational amplifier are connected to the node between the positive pole of described 21 resistance and the 5th electric capacity; 7 mouthfuls of described 3rd operational amplifier are connected to described 3rd diode cathode; 5 mouthfuls of described 3rd operational amplifier are connected to the node between the negative pole of described 22 resistance and described 5th electric capacity; 2 mouthfuls of described four-operational amplifier connect access se current terminal afterwards with 1 mouthfuls; Node between 3 mouthfuls of access the 109 resistance of described four-operational amplifier and the 110 resistance; The dynode of the 46 diode group accesses 3 mouthfuls of described first terminals;
Described voltage feedback circuit mainly comprises: the 31 terminals, the 5th to the 7th voltage signal follower, the first to the 3rd resistance, the 8th to the 14 resistance, the first to the second electric capacity, the first diode, the 42 to the 45 diode, the 4th test lead, sense voltage end, se voltage end, striking indication end;
The negative pole of described 42 diode and the negative pole of described 44 diode also connect, the described positive pole of the 43 diode and the positive pole of the 45 diode also connect rear access ground wire, the positive pole of described 42 diode is connected to the negative pole of described 43 diode, the positive pole of described 44 diode is connected to the negative pole of the 45 diode, forms the first bridge rectifier; 3 mouthfuls of described 31 terminals are connected to the positive pole of described 42 diode, and 4 mouthfuls of described 31 terminals are connected to the positive pole of described 44 diode; Described first resistor coupled in parallel is on the negative pole of described 44 diode and the positive pole of the 45 diode; Described second resistance is connected in parallel on described first resistance two ends after being connected in series with the 3rd resistance; The positive pole of described first electric capacity is connected to the node between described 3rd resistance and described second resistance, and the negative pole of described first electric capacity is connected to ground wire; 3 mouthfuls of described 5th voltage signal follower are connected to the node between described second resistance and described 3rd resistance, 2 mouthfuls of described 5th voltage signal follower and be connected to described 4th test lead and described sense voltage end after being connected to 1 mouthful and node after connecing; Described 4th test lead is connected to after 3 mouthfuls of described 6th voltage signal follower are connected in series with described tenth resistance, be connected to described 4th test lead after 2 mouthfuls of described 6th voltage signal follower are connected in series with described 9th resistance, 1 mouthful of described 6th voltage signal follower is connected to described striking indication end; The positive pole of described second electric capacity is connected to the node between described 11 resistance and 1 mouthful of described 5th voltage follower, and the negative pole of described second electric capacity is connected to ground wire; Described 11 resistance one end is connected to the 4th test lead, and the other end is connected to described ground wire; The negative pole of described first diode is connected to 3 mouthfuls of described 6th voltage signal follower, is connected to 1 mouthful of described 6th voltage signal follower after the positive pole of described first diode is connected in series with described 12 resistance; Described 4th test lead, described 13 resistance, described 14 resistance, described ground wire are connected successively; 5 mouthfuls of nodes be connected between the 13 resistance and the 14 resistance of described 7th voltage signal follower, 6 mouthfuls of described 7th voltage signal follower connect access se voltage end afterwards with 7 mouthfuls of described 7th voltage signal follower;
Described pulse sampling circuit mainly comprises: the 4th terminals, the 9th to the tenth voltage follower, the 303 to the 304 resistance, the 213 to the 214 resistance, the 64 to the 67 electric capacity, the 30 to the 31 diode, the 32 to the 39 fast recovery diode, the second to the 3rd transformer, output signal end;
Described 32 to the 35 fast recovery diode forms the second bridge rectifier; 3 mouthfuls of described 4th terminals are connected to the positive pole of described 34 fast recovery diode, and 4 mouthfuls of described 4th terminals are connected to the positive pole of described 32 fast recovery diode; After described 65 electric capacity and described 303 resistance and described 213 resistor coupled in parallel, the negative pole of this electric capacity is connected to the positive pole of the 33 fast recovery diode, and the positive pole of this electric capacity is connected to the negative pole of the 32 fast recovery diode; 5 mouthfuls of described 9th voltage follower are connected to the negative pole of described 32 fast recovery diode, and 6 mouthfuls of described 9th voltage follower are connected to described output signal end, and 7 mouthfuls of described 9th voltage follower are connected to the positive pole of described 30 diode; The negative pole of described 30 diode is connected to described output signal end;
Described 36 to the 39 fast recovery diode composition the 3rd bridge rectifier; 1 mouthful of described 4th terminals is connected to the positive pole of described 38 fast recovery diode, and 2 mouthfuls of described 4th terminals are connected to the positive pole of described 36 fast recovery diode; After described 64 electric capacity and described 304 resistance and described 214 resistor coupled in parallel, the negative pole of this electric capacity is connected to the positive pole of the 37 fast recovery diode, and the positive pole of this electric capacity is connected to the negative pole of the 36 fast recovery diode; 3 mouthfuls of described tenth voltage follower are connected to the negative pole of described 36 fast recovery diode, and 2 mouthfuls of described tenth voltage follower are connected to described output signal end, and 1 mouthful of described tenth voltage follower is connected to the positive pole of described 31 diode; The negative pole of described 31 diode is connected to described output signal end; 8 mouthfuls of described tenth voltage follower are accessed positive 15V normal voltages and are connected to the positive pole of described 66 electric capacity, and the negative pole of this electric capacity is connected with ground wire; 4 mouthfuls of accesses of described tenth voltage follower are born 15V normal voltage and are connected to the positive pole of described 67 electric capacity, and the negative pole of this electric capacity is connected with ground wire; The positive pole of described 35 fast recovery diode is connected with ground wire with after the positive pole parallel connection of described 37 fast recovery diode.
6. one becomes more meticulous Multifunctional welding welding system according to claim 5; it is characterized in that, described temperature sense main circuit will comprise: the first to the second thermistor, the 8th to the 9th terminals, the 11 to the 13 operational amplifier, the 294 to the 309 resistance, the 71 to the 76 electric capacity, the 131 electric capacity, the 28 to the 29 diode, the first to the second temperature monitoring end;
Between 1 mouthful and 2 mouthfuls that described first thermistor is serially connected with described 8th terminals, between 1 mouthful and 2 mouthfuls that described second thermistor is serially connected with described 9th terminals; The positive pole of described 71 electric capacity is connected to 2 mouthfuls of described 8th terminals, and the negative pole of this electric capacity is connected with ground wire; The positive pole of described 74 electric capacity is connected to 2 mouthfuls of described 9th terminals, and the negative pole of this electric capacity is connected with ground wire; Described 72 electric capacity is connected to 1 mouthful of described 8th terminals, and the negative pole of this electric capacity is connected with ground wire; The positive pole of described 75 electric capacity is connected to 1 mouthful of described 9th terminals, and the negative pole of this electric capacity is connected with ground wire; Described 294 resistance, the 295 resistance, the 297 resistance connect successively after two ends access equal ground wire; Described 303 resistance, the 304 resistance, the 305 resistance connect successively after two ends access equal ground wire; 296 resistance, the 298 resistance connect successively after two ends access equal ground wire; 1 mouthful of node be connected between described 294 resistance and described 295 resistance of described 8th terminals, 2 mouthfuls of nodes be connected between described 295 resistance and described 297 resistance of described 8th terminals, 1 mouthful of node be connected between described 303 resistance and described 304 resistance of described 9th terminals, 2 mouthfuls of nodes be connected between described 304 resistance and described 305 resistance of described 9th terminals; The positive pole of described 73 electric capacity is connected to the node between described 298 resistance and the 296 resistance, and the negative pole of described 73 electric capacity is connected to ground wire; 3 mouthfuls of nodes be connected between described 296 resistance and described 298 resistance of described 11 operational amplifier, 2 mouthfuls of described 11 operational amplifier are connected to 1 mouthful of this operational amplifier; 2 mouthfuls of described 8th terminals, described 299 resistance, described 301 resistance, 5 mouthfuls of described 12 operational amplifier connect successively; The positive pole of described 131 electric capacity is connected to the node in the middle of described 299 resistance and described 301 resistance, and the negative pole of this electric capacity connects ground wire; Between 1 mouthful and 6 mouthfuls of described 12 operational amplifier that described 300 resistance is serially connected in described 11 operational amplifier; The positive pole of described 28 diode is connected to 7 mouthfuls of described 12 operational amplifier, and the negative pole of described 28 diode is connected to the first temperature monitoring end; Described 302 resistance is serially connected between 6 mouthfuls of described 12 operational amplifier and the negative pole of described 28 diode; 2 mouthfuls of described 9th terminals, described 307 resistance, described 308 resistance, 10 mouthfuls of described 13 operational amplifier connect successively; The negative pole of described 76 electric capacity is connected to ground wire, and the positive pole of this electric capacity is connected to the node between described 307 resistance and described 308 resistance; Between 1 mouthful and 9 mouthfuls of described 13 operational amplifier that described 306 resistance is serially connected in described 11 operational amplifier; Described 29 diode cathode is connected to 8 mouthfuls of described 13 operational amplifier, and the negative pole of described 29 diode is connected to the second temperature monitoring end; Described 309 resistance be serially connected with 9 mouthfuls of described 13 operational amplifier with the negative pole of described 29 diode;
Described fan drive circuit mainly comprises: photoelectrical coupler, the 11 terminals, the 45 to the 50 resistance, the 37 to the 38 electric capacity, the 62 electric capacity, the 27 diode, the 202 diode, the 4th Zener diode, the 3rd FET, the 4th triode, inductance, signal input part and fan;
Connect successively for 2 mouthfuls of described signal input part, described 50 resistance, described 49 resistance, described photoelectrical coupler; 3 mouthfuls of described photoelectrical coupler are connected to the node between described 50 resistance and described 49 resistance, and 6 mouthfuls of described photoelectrical coupler are connected to 7 mouthfuls of this photoelectrical coupler; Described 38 capacitance cathode is connected to 8 mouthfuls of described photoelectrical coupler, and the negative pole of described 38 electric capacity is connected to 5 mouthfuls of described photoelectrical coupler; Described 44 resistance one end is connected to 7 mouthfuls of described photoelectrical coupler, and the other end is connected to the negative pole of described 202 diode, and the positive pole of described 202 diode is connected to the control pole of described 3rd FET; Described 48 resistance is serially connected between 7 mouthfuls of described photoelectrical coupler and the control pole of described 3rd FET; The positive pole of described 4th Zener diode is connected to 5 mouthfuls of described photoelectrical coupler, and the negative pole of described 4th Zener diode is connected to the positive pole of described 202 diode; Between the control pole that described 45 resistance is serially connected with described 3rd FET and source electrode; The colelctor electrode of described 4th triode is connected to the control pole of described 3rd FET, and the emitter stage of described 4th triode is connected to 5 mouthfuls of described photoelectrical coupler; The source electrode of the base stage of described 4th triode, the 46 resistance, the 3rd FET is connected successively; Described 47 resistance is serially connected with between 5 mouthfuls of described photoelectrical coupler and the source electrode of described 3rd FET; The positive pole of described 27 diode is connected to the drain electrode of described 3rd FET, and the negative pole of described 27 diode is connected to 8 mouthfuls of described photoelectrical coupler and 1 mouthful of described 11 terminals; The positive pole of described 62 electric capacity is connected to 8 mouthfuls of described photoelectrical coupler, and the negative pole of described 62 electric capacity is connected to the emitter stage of described 4th triode; Described inductance is serially connected with 2 mouthfuls of described 27 diode cathode and described 11 terminals; Described 37 capacitance cathode is connected to 1 mouthful of described 11 terminals, and the negative pole of described 37 electric capacity is connected to 2 mouthfuls of described 11 terminals; Between 1 mouthful and 2 mouthfuls of described 11 terminals that described fan is serially connected in described 11 terminals.
7. one becomes more meticulous Multifunctional welding welding system according to claim 6, it is characterized in that, described precision current Circuit tuning mainly comprises: sense current terminal, big current end, small area analysis end, error output, the ten four to ten six operational amplifiers, 33 operational amplifier, 70th the five to nine ten one resistance, 113 resistance, 416 resistance, 506 resistance, 501st the ten to five hundred one ten three resistance, 515 resistance, 630 resistance, second to the 3rd adjustable resistance, 15 to the 19 electric capacity, 8th diode group, 13 diode group, 12 diode, 14 diode, 7th to the 8th Zener diode, 27 FET,
Described big current end, described 86 resistance, described 87 resistance, described 89 resistance, described 88 resistance, described sense current terminal are connected successively; The negative pole of described 19 electric capacity is connected to the node between described 88 resistance and described 89 resistance; Between the positive pole that described 92 resistance is serially connected in described 19 electric capacity and the negative pole of described 14 diode, the positive pole of described 14 diode is connected to described error output; Described 416 resistance is serially connected between described big current end and ground wire; 2 mouthfuls of nodes be connected between described 86 resistance and described 87 resistance of described 33 operational amplifier, 3 mouthfuls of described 33 operational amplifier are connected to ground wire, and 1 mouthful of described 33 operational amplifiers is connected to the node between described 87 resistance and described 89 resistance; The movable end of described 3rd adjustable resistance and stiff end 1 also connect rear access ground wire, and the stiff end 3 of described 3rd adjustable resistance is connected and to be connected to 2 mouthfuls of described 33 operational amplifier after the 630 resistance; The positive pole of described 13 diode group and negative pole also access the negative pole of the 19 electric capacity, access ground wire after dynode series connection the 90 resistance of described 13 diode group; 6 mouthfuls of described tenth four-operational amplifier are connected to the negative pole of described 19 electric capacity, 5 mouthfuls of access ground wires of described tenth four-operational amplifier, and 7 mouthfuls of described tenth four-operational amplifier are connected to the negative pole of the 14 diode; The positive pole of described 8th Zener diode is connected to the dynode of described 13 diode group, and the negative pole of described 8th Zener diode is connected to the negative pole of described 14 diode; The negative pole of the negative pole of described 18 electric capacity, described 506 resistance, described 50 diode is connected successively, and the positive pole of described 50 diode is connected to the positive pole of described 18 electric capacity; The negative pole of described 18 diode is also connected to the negative pole of the 19 electric capacity, and the positive pole of described 18 diode is also connected to the negative pole of described 14 diode; Described 91 resistor coupled in parallel is in described 18 electric capacity two ends;
Described 77 resistance, described 78 resistance, described 79 resistance, described 16 electric capacity negative pole are connected successively, described 16 capacitance cathode, described 82 resistance, described 12 diode cathode are connected successively, and described 12 diode cathode, described 113 resistance, described error output are connected successively; Described 510 resistance is connected to the movable end 3 of described second adjustable resistance; The movable end 1 of described small area analysis end, described 511 resistance, described second adjustable resistance is connected successively; 5 mouthfuls of described 15 operational amplifier are connected to the movable end of described second adjustable resistance, 6 mouthfuls of described 15 operational amplifier are connected to 7 mouthfuls of described 15 operational amplifier, 7 mouthfuls of described 15 operational amplifier with described 515 resistant series after be connected to the negative pole of described 16 electric capacity; Described 512 resistance, described 513 resistance, ground wire are connected successively; Between the source electrode that described 513 resistance is also serially connected in described 27 FET and the control pole of described 27 FET, the drain electrode of described 27 FET is connected to the node between described 77 resistance and described 78 resistance; The negative pole of described 16 electric capacity is connected to after described 75 resistance of described sense current terminal series connection; The positive pole of described 8th diode group and the negative pole of described 8th diode group also connect the negative pole of rear access the 16 electric capacity, access ground wire after described 80 resistance of dynode series connection of described 8th diode group; 3 mouthfuls of described 16 operational amplifier are connected to ground wire, and 2 mouthfuls of described 16 operational amplifier are connected to the negative pole of described 16 electric capacity, and 1 mouthful of described 16 operational amplifier is connected to the positive pole of described 12 diode; The positive pole of described 7th Zener diode is connected to the dynode of described 8th diode group, and the negative pole of described 7th Zener diode is connected to the positive pole of described 12 diode; The positive pole of described 15 electric capacity is connected to the positive pole of described 12 diode, and the negative pole of described 15 electric capacity is connected to the negative pole of described 16 electric capacity.
8. a kind of control method of the Multifunctional welding welding system that becomes more meticulous according to claim 1-7, is characterized in that, mainly comprise the following steps:
A. the output voltage/electric current of described sampling unit to described welding module is sampled, and described for generation sampled signal is transferred to described control module;
B. described control module judges welds types according to described sampled signal;
C. described control module exports corresponding described pulse-width modulation control signal according to welds types to described power module and described small area analysis Voltage stabilizing module;
D. described power module exports corresponding pulse voltage/electric current according to described pulse-width modulation control signal; Described small area analysis Voltage stabilizing module exports corresponding stabilising arc voltage according to described pulse-width modulation control signal.
9. the control method of a kind of Multifunctional welding welding system that becomes more meticulous according to claim 8, is characterized in that, further comprising the steps of after steps d:
E. described temperature sense circuit sends the real time temperature signal of described power module to described control module;
F. described control module controls the revolution of described fan according to described real time temperature signal.
10. the control method of a kind of Multifunctional welding welding system that becomes more meticulous according to claim 9, is characterized in that, further comprising the steps of after step e:
G. the described real time temperature signal that exported by described temperature sense circuit of described fault induction module and described setting contrast;
If temperature value is more than or equal to described setting in described live signal, then described fault induction module sends described fault-signal to described control module;
If described temperature value is less than described setting, then proceed contrast;
H. described control module is according to the described fault-signal of input, stops exporting described pulse-width modulation control signal.
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| CN109746603A (en) * | 2019-03-28 | 2019-05-14 | 北部湾大学 | A welding system for a ship assembling plate frame structure |
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