CN201017206Y - Multi-welding power source group control device - Google Patents
Multi-welding power source group control device Download PDFInfo
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- CN201017206Y CN201017206Y CNU2006201411967U CN200620141196U CN201017206Y CN 201017206 Y CN201017206 Y CN 201017206Y CN U2006201411967 U CNU2006201411967 U CN U2006201411967U CN 200620141196 U CN200620141196 U CN 200620141196U CN 201017206 Y CN201017206 Y CN 201017206Y
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Abstract
一种多焊接电源群控装置，包括用于控制多路焊接电源的群控控制器、用于焊接参数采集的A/D转换器、用于实现多个焊接电源的焊接参数实时控制的D/A转换器、用于参数输入与设定的键盘，用于参数显示的屏显部分，所述的群控控制器包括参数设置模块、信号采集模块、电网电压波动检测模块、优先级计算模块、优先级群控模块；参数设置模块、信号采集模块、电网电压波动检测模块连接优先级计算模块，优先级计算模块连接优先级群控模块，优先级群控模块的输出连接D/A转换器。本实用新型在电网电压发生波动时调整焊接电源参数时能够有效避免对电网电压造成干扰、焊接参数稳定、焊缝质量高。
A group control device for multiple welding power sources, including a group control controller for controlling multiple welding power sources, an A/D converter for collecting welding parameters, and a D/D converter for realizing real-time control of welding parameters of multiple welding power sources. A converter, a keyboard for parameter input and setting, and an on-screen display part for parameter display. The group control controller includes a parameter setting module, a signal acquisition module, a grid voltage fluctuation detection module, a priority calculation module, The priority group control module; the parameter setting module, the signal acquisition module, and the grid voltage fluctuation detection module are connected to the priority calculation module, the priority calculation module is connected to the priority group control module, and the output of the priority group control module is connected to the D/A converter. The utility model can effectively avoid interference to the grid voltage when adjusting the parameters of the welding power supply when the grid voltage fluctuates, and has stable welding parameters and high weld seam quality.
Description
(1) technical field
The utility model relates to a kind of Multi-welding Power Source Group Control Device
(2) background technology
Under the promotion of microelectronics and digital technology, some digitized intelligent sources of welding current have appearred, and when fluctuation takes place external parameter, can rely on the control system of the source of welding current self to carry out self-adjusting, realize the stable of welding parameter, thereby guaranteed welding quality.The lintegrai of EWM company series is arranged at present, and the intelligent sources of welding current such as Fronius company's T ransplus synergic series are exactly digitized achievement; Also has source of welding current Waveform Control, the estimation of source of welding current bulk properties and modeling, to the control algolithms such as combination property control of GMAW welding etc., these control strategies have been obtained positive effect to reducing the external voltage fluctuation to the influence of the welding process of the single source of welding current.
But on modern production line, when welding some complex parts, need many welding gun is worked simultaneously to finish weld task.The corresponding source of welding current of welding gun, when fluctuation takes place in line voltage, each source of welding current relies on the control system of self to carry out self-adjusting, because the power of the source of welding current is bigger, electric current, voltage intercouple between each welding gun, multiple welding power supply is adjusted simultaneously and must will be produced bigger fluctuation to line voltage, further has influence on the distortion of weldquality and postwelding product.
(3) summary of the invention
Cause bigger interference, welding parameter instability, deficiency that weldquality is low in order to overcome adjusting automatically, simultaneously to line voltage of existing Multi-welding Power Source Group Control Device when fluctuation takes place line voltage, the utility model provides a kind of can effectively avoiding when adjusting source of welding current parameter when fluctuation takes place line voltage that line voltage is caused interferences, welding parameter is stablized, weldquality is high Multi-welding Power Source Group Control Device.
The technical scheme that its technical matters that solves the utility model adopts is:
A kind of Multi-welding Power Source Group Control Device, comprise team control controller, the A/D converter that is used for the welding parameter collection that is used to control the multichannel source of welding current, the real-time D/A converter of controlling of welding parameter that is used to realize a plurality of sources of welding current, the keyboard that is used for the parameter input and sets, be used for the apparent part of screen that parameter shows, described team control controller comprises: be used for the setup parameter value according to the keyboard input, the parameter that the welding parameter of a plurality of sources of welding current is set is provided with module; Be used for gathering the signal acquisition module of the on-line parameter of each source of welding current by A/D converter; Be used to gather the undulating quantity of line voltage, when the voltage ripple of power network value is adjusted threshold value greater than voltage, be judged to be the voltage ripple of power network detection module of voltage fluctuation; Described team control controller also comprises and is used to adopt position parameter D to represent position while welding, after being judged to be voltage fluctuation, gather the on-line parameter of each source of welding current, and the difference of on-line parameter and setup parameter is defined as error coefficient E, the product representation of position parameter D and error coefficient E is for adjusting the priority computing module of priority P; Be used for size order, successively each source of welding current adjusted to the priority team control module of setup parameter value according to priority; Described parameter is provided with module, signal acquisition module, voltage ripple of power network detection module connection priority computing module, described priority computing module connection priority team control module, and the output of described priority team control module connects D/A converter.
Further, described priority team control module comprises the time interval that is used for according to setting, and the time interval of successively each source of welding current being adjusted to the setup parameter value is provided with the unit.
Further again, described A/D converter connects the multichannel source of welding current by multi-way switch, and described D/A converter connects the multichannel source of welding current by multi-way switch.
Further, described welding parameter comprises welding current, weldingvoltage, wire feed rate.
Technical conceive of the present utility model is: in actual use, when voltage ripple of power network, in the prior art, the control system of each source of welding current can start self-adjusting immediately.Multiple welding power supply is adjusted simultaneously and must will be produced bigger fluctuation to line voltage, further has influence on the distortion of weldquality and postwelding product.
Adjust in the time of for the prevention multiple welding power supply, after calculating priority, the source of welding current that should priority is less (the back is adjusted) parameter setting is a sampled value, after the bigger source of welding current of priority is adjusted a period of time, establish back set-point again, allow the source of welding current adjust voluntarily.
With position parameter D (d
1, d
2..., d
n) the expression position while welding, the position parameter of 12 liang of side welds of workpiece allows the position parameter of 12 liang of side welds of workpiece keep symmetry with consistent greater than the position parameter of middle weld seam simultaneously.
With error coefficient E (e
1, e
2..., e
n) actual parameter passed back by the information acquisition passage of expression and the error size of setup parameter.Error is big more, and the error coefficient of setting is big more.The product representation of position parameter D and error coefficient E is for adjusting priority P:
P＝D·E
Thus obtained priority difference is adjusted the corresponding source of welding current 13 by this priority orders.For example, d
1=3, e
1=8, d
3=6, e
3=2, though i
3＞i
1, but p
1=d
1* e
1=24＞p
3=d
3* e
3=12, so preferentially adjust first source of welding current 13.The thought of this control strategy is, preferentially adjusts the important and bigger source of welding current parameter of error in position, taken into account two aspects of welding parameter and parameter error.
The beneficial effects of the utility model mainly show: 1, when fluctuation takes place external parameter, the Multi-welding Power Source Group Control Device that the utility model provides can be coordinated multiple welding power supply in an orderly manner and carry out self-adjusting, guarantee the stable of welding parameter, improved weldquality; 2, realize complicated multiple welding power supply team control, can adapt to abominable industrial environment again, can satisfy different welding needs.
(4) description of drawings
Fig. 1 is a multiple welding power supply welding system structural representation.
Fig. 2 is the control system structure synoptic diagram of Multi-welding Power Source Group Control Device.
Fig. 3 is the main flow chart of software systems.
Fig. 4 is the team control strategic process figure with priority.
Fig. 5 is the real-time adjustment strategy according to the welding parameter rule.
Fig. 6 is the theory diagram of team control controller.
(5) embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1～Fig. 6, a kind of Multi-welding Power Source Group Control Device, comprise team control controller 3, the A/D converter 7 that is used for the welding parameter collection that is used to control the multichannel source of welding current, the real-time D/A converter of controlling 8 of welding parameter that is used to realize a plurality of sources of welding current, the keyboard 4 that is used for the parameter input and sets, be used for the apparent part 2 of screen that parameter shows, described team control controller 3 comprises: parameter is provided with module 14, be used for setup parameter value, the welding parameter of a plurality of sources of welding current is set according to the keyboard input; Signal acquisition module 15 is used for gathering by A/D converter the on-line parameter of each source of welding current; Voltage ripple of power network detection module 16 is used to gather the undulating quantity of line voltage, when the voltage ripple of power network value is adjusted threshold value greater than voltage, is judged to be voltage fluctuation; Priority computing module 17 is used to adopt position parameter D to represent position while welding, n the corresponding d of the source of welding current
1, d
2..., d
n, the position parameter of workpiece two side welds allows the position parameter of workpiece two side welds keep symmetry with consistent greater than the position parameter of middle weld seam simultaneously; After being judged to be voltage fluctuation, gathering the on-line parameter of each source of welding current, and the difference of on-line parameter and setup parameter is defined as error coefficient E, n the corresponding e of the source of welding current
1, e
2..., e
n, the product representation of position parameter D and error coefficient E is for adjusting priority P:
P＝D·E；
Priority team control module 18 is used for the size order according to priority, successively sets the parameter value of each source of welding current, and the source of welding current is adjusted to the setup parameter value;
Described parameter is provided with module 14, signal acquisition module 15, voltage ripple of power network detection module 16 connection priority computing modules 17, described priority computing module 17 connection priority team control modules 18, the output of described priority team control module 18 connects D/A converter 8.
In described priority team control module 18,, successively each source of welding current is adjusted to the setup parameter value according to the time interval of setting.Described A/D converter 7 connects the multichannel source of welding current by multi-way switch 11, and described D/A converter 8 connects the multichannel source of welding current by multi-way switch.Described welding parameter comprises welding current, weldingvoltage, wire feed rate.
Present embodiment is a multiple welding power supply welding system structural representation.Control section comprises embedded controller 3, A/D passage 7, D/A passage 8, multi-way switch 11, LCD display 2, keyboard 4, RS485 interface 6.Wherein embedded controller is the core of control system, includes multiple welding power supply team control intelligent control algorithm, and DSP, ARM etc. all is adapted at taking on controller in the described system.A/D passage 7, D/A passage 8, multi-way switch 11 are used for a plurality of sources of welding current are carried out parameter acquisition and parameter control.LCD display 2, keyboard are realized the setting and the demonstration of welding parameter.A plurality of embedded controlling system of welder can be realized networking by RS-485 interface 6, changeing the RS-232 module by RS-485 again realizes communicating by letter with host computer, can allow the supvr in time understand the welding process of multiple devices, can also on host computer, realize the access of welding technology and parameter, be convenient to analyze the quality of multiple welding technology and parameter, realize the welding process evaluation.
Controlled part comprises a plurality of sources of welding current 13 (it comprises source of welding current group 1 and following source of welding current group 5), last welding gun 9, following welding gun 10.Wherein system realizes the real-time welding parameter collection (as welding current, weldingvoltage, wire feed rate etc.) of a plurality of sources of welding current by A/D passage 7; Welding parameter by a plurality of sources of welding current of D/A passage 8 realizations is controlled in real time, mainly is the weldingvoltage and the electric current of control source of welding current group, and wire feed rate, thereby realizes the control to welding process.
With reference to Fig. 3, the software of controlling system of welder is made up of master routine, keyboard and display subroutine, sampling and output subroutine and communicator program.Procedure stores is in Flash, and after powering on, flush bonding processor loads program from Flash, the welding parameter that the user sets or selects to have stored by keyboard 4 and LCD2, and welding parameter is with the form storage of tables of data, and workpiece 12 length are corresponding with welding parameter.In the welding process, master routine down passes corresponding welding parameter to different welding machines according to current weld length after tabling look-up, thereby realizes adjusting in real time.
The software of controlling system of welder is not only finished general control function, also is achieved as follows two control strategies: team control strategy and welding parameter with priority are adjusted strategy in real time.
With reference to Fig. 4,, in control system, introduce team control strategy with priority in order to improve weldquality and to reduce welding deformation amount:
With position parameter D (d
1, d
2..., d
n) the expression position while welding, the position parameter of 12 liang of side welds of workpiece allows the position parameter of 12 liang of side welds of workpiece be consistent greater than the position parameter of middle weld seam simultaneously.
With error coefficient E (e
1, e
2..., e
n) actual parameter passed back by the information acquisition passage of expression and the error size of setup parameter.Error is big more, and the error coefficient of setting is big more.The product representation of position parameter D and error coefficient E is for adjusting priority P:
P＝D·E
Thus obtained priority difference is adjusted the corresponding source of welding current 13 by this priority orders.For example, d
1=3, e
1=8, d
3=6, e
3=2, though i
3＞i
1, but p
1=d
1* e
1=24＞p
3=d
3* e
3=12, so preferentially adjust first source of welding current 13.The thought of this control strategy is, preferentially adjusts the important and bigger source of welding current parameter of error in position, taken into account two aspects of welding parameter and parameter error.
In actual use, when voltage ripple of power network, the control system of each source of welding current can start self-adjusting immediately.Adjust in the time of for the prevention multiple welding power supply, after calculating priority, the source of welding current that should priority is less (the back is adjusted) parameter setting is a sampled value, after the bigger source of welding current of priority is adjusted a period of time, establish back set-point again, allow the source of welding current adjust voluntarily.
With reference to Fig. 5, in workpiece 12 welding processes, though the different sources of welding current 13 can be set at different welding parameters, but same welding gun (source of welding current) is generally fixed to the parameter of receiving the arc process from the starting the arc, and the heat transfer condition of the starting the arc during with the receipts arc is different, temperature is lower during the starting the arc, weak heat-dissipating when receiving arc, temperature is higher, and this has just caused in the starting the arc and the arc that falls, and appearance of weld and stabilising arc section are inconsistent, thereby cause workpiece two ends distortion (axial deformation), in factory, generally to waste material from two ends cut-out workpiece.So, in this control system, the parameter of welding process is carried out real-time monitoring by rule shown in Figure 5.
From test findings and production practices, when external voltage fluctuations, use this control system, reduce the parameter adjustment time and adjusted error, improved weldquality, effectively suppressed the distortion of the width of the workpiece and length direction, reached and produced needs.
Claims (3)
1. Multi-welding Power Source Group Control Device, comprise team control controller, the A/D converter that is used for the welding parameter collection that is used to control the multichannel source of welding current, the real-time D/A converter of controlling of welding parameter that is used to realize a plurality of sources of welding current, the keyboard that is used for the parameter input and sets, be used for the apparent part of screen that parameter shows, described team control controller comprises:
Be used for the setup parameter value according to the keyboard input, the parameter that the welding parameter of a plurality of sources of welding current is set is provided with module;
Be used for gathering the signal acquisition module of the on-line parameter of each source of welding current by A/D converter; Be used to gather the undulating quantity of line voltage, when the voltage ripple of power network value is adjusted threshold value greater than voltage, be judged to be the voltage ripple of power network detection module of voltage fluctuation;
It is characterized in that: described team control controller also comprises and is used to adopt position parameter D to represent position while welding, after being judged to be voltage fluctuation, gather the on-line parameter of each source of welding current, and the difference of on-line parameter and setup parameter is defined as error coefficient E, the product representation of position parameter D and error coefficient E is for adjusting the priority computing module of priority P; Be used for size order, successively each source of welding current adjusted to the priority team control module of setup parameter value according to priority; Described parameter is provided with module, signal acquisition module, voltage ripple of power network detection module connection priority computing module, described priority computing module connection priority team control module, and the output of described priority team control module connects D/A converter.
2. Multi-welding Power Source Group Control Device as claimed in claim 1 is characterized in that: described priority team control module comprises the time interval that is used for according to setting, and the time interval of successively each source of welding current being adjusted to the setup parameter value is provided with the unit.
3. Multi-welding Power Source Group Control Device as claimed in claim 1 or 2 is characterized in that: described A/D converter connects the multichannel source of welding current by multi-way switch, and described D/A converter connects the multichannel source of welding current by multi-way switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201411967U CN201017206Y (en) | 2006-12-19 | 2006-12-19 | Multi-welding power source group control device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201411967U CN201017206Y (en) | 2006-12-19 | 2006-12-19 | Multi-welding power source group control device |
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| Publication Number | Publication Date |
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| CN201017206Y true CN201017206Y (en) | 2008-02-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109656217A (en) * | 2018-12-28 | 2019-04-19 | 上海沪工焊接集团股份有限公司 | A kind of device clusters control method and its system based on channel |
-
2006
- 2006-12-19 CN CNU2006201411967U patent/CN201017206Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109656217A (en) * | 2018-12-28 | 2019-04-19 | 上海沪工焊接集团股份有限公司 | A kind of device clusters control method and its system based on channel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuxi Yangtong Machinery Equipment Co., Ltd. Assignor: Zhejiang University of Technology Contract fulfillment period: 2008.8.25 to 2013.8.25 Contract record no.: 2008320000888 Denomination of utility model: Multiple welding source group control device Granted publication date: 20080206 License type: Exclusive license Record date: 20081013 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.8.25 TO 2013.8.25; CHANGE OF CONTRACT Name of requester: WUXI CITY YANGTONG MACHINARY EQUIPMENT CO., LTD. Effective date: 20081013 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20101219 |