CN104009681A - Control method for drive control system of single-phase brushless direct-current motor - Google Patents
Control method for drive control system of single-phase brushless direct-current motor Download PDFInfo
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- CN104009681A CN104009681A CN201410245698.3A CN201410245698A CN104009681A CN 104009681 A CN104009681 A CN 104009681A CN 201410245698 A CN201410245698 A CN 201410245698A CN 104009681 A CN104009681 A CN 104009681A
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Abstract
The invention provides a control method for a drive control system of a single-phase brushless direct-current motor. The system comprises a direct-current power supply module, a control module, a power drive bridge module, a signal sampling module and a rotating speed regulation module, wherein the direct-current power supply module is used for supplying electricity to the system, the power drive bridge module and the signal sampling module are in signal connection with the control module, and the rotating speed regulation module is used for presetting the rotating speed of the motor. The method includes the steps that the system is powered on; the rotating speed regulation module is regulated, and the expected motor rotating speed Ve is preset; the control module conducts sampling on coherent signals and calculates the actual motor rotating speed Vr; the actual motor rotating speed Vr is compared with the expected motor rotating speed Ve, if the actual motor rotating speed Vr is lower than the expected motor rotating speed Ve, motor winding excitation time is prolonged, and otherwise motor winding excitation time is shortened. The high duty ratio and long-time excitation motor windings can be avoided from occurring in a Hall one-half cycle, the situation that the service life of the motor is shortened due to overheating of the motor windings and eddy current losses of a magnetic core is avoided, operation of the motor is monitored in real time, the rotating speed of the motor is controlled in real time, and high motor rotating speed requirements are met.
Description
Technical field
The present invention relates to a kind of driving control method of motor, be specifically related to a kind of control method of driving control system of single-phase brushless direct-current motor.
Background technology
Single-phase BLDC(brshless DC motor in brshless DC motor) because its number of phases is minimum, electrical system is relatively simple, and required Drive and Control Circuit cost is little, in fields such as electric tool, blower fan, dust catchers, obtains applying comparatively widely.At present, common single-phase BLDC drives to control and adopts H bridge-PWM to drive control mode, at Hall, in the half period, with PWM, drives H bridge power device excitation electromotor winding, suitably regulates PWM duty ratio to control motor speed.Due to whole Hall in the half period winding continue with PWM excitation, efficiency is not very high, particularly in the higher application of rotating speed, larger duty ratio and long period excitation electromotor winding easily cause the increase of magnetic core eddy current loss, the excessive excitation heating of motor winding, whole electric machine temperature rise is excessive, thereby motor performance and useful life are all greatly affected.
Summary of the invention
For above-mentioned prior art, the technical problem to be solved in the present invention is: provide a kind of and can monitor in real time the driving control method of adjusting motor speed and adjusting motor winding excitation time according to motor speed, improve the problems such as magnetic core eddy current loss is large, the excessive excitation heating of motor winding.
In order to address the above problem, a kind of control method of driving control system of single-phase brushless direct-current motor, described system comprises DC power supplier, control module, the power drive electric bridge module being connected with described control module signal and signal sampling module for system power supply, for the rotational speed regulation module of default motor speed, described method comprises:
S1. system powers on;
S2. adjusting rotary speed adjustment module, presets expectation motor speed Ve;
S3. control module is sampled to coherent signal and is calculated real electrical machinery rotating speed Vr;
S4. compare real electrical machinery rotating speed Vr and expectation motor speed Ve, if real electrical machinery rotating speed Vr increases motor winding excitation time lower than expectation motor speed Ve, otherwise reduce motor winding excitation time.
Preferably, the rotor-position that described real electrical machinery rotating speed Vr is of coupled connections and records according to the Hall element comprising in signal sampling module and brshless DC motor, calculates by control module.
Preferably, in the method, also comprise that one shifts to an earlier date in the excitation time in advance of the signal reversing time point of hall signal.In advance the effect of excitation is in order to improve motor speed, makes the motor can High Rotation Speed.
Preferably, described excitation time is in advance according to motor speed adjustment.
Preferably, in the half period of described any one Hall signal of telecommunication, comprise two or more motor winding excitation time sections, and two or more motor winding time of afterflow section.
Preferably, in the half period of described any one Hall signal of telecommunication, motor winding excitation time and time of afterflow are all with the variation real-time change of rotating speed.
Compared with prior art, tool of the present invention has the following advantages:
One, avoid occurring larger duty ratio and long-time excitation electromotor winding in the Hall half period, avoid the motor minimizing in useful life that motor winding is overheated and magnetic core eddy current loss causes.
Two, realize monitoring motor rotation signal in real time, control in real time motor speed, realize higher motor speed requirement.
Three, regulate according to demand motor speed.
Accompanying drawing explanation
Fig. 1 is driving control system circuit diagram of the invention process.
Fig. 2 is control method flow chart of the invention process.
Fig. 3 is that sequential chart is controlled in driving of the invention process.
Embodiment
In order to allow those skilled in the art understand better technical scheme of the present invention, below in conjunction with accompanying drawing, the present invention is further elaborated.
As shown in Figure 1, a kind of driving control system of single-phase brushless direct-current motor comprises DC power supplier, control module, the power drive electric bridge module being connected with described control module signal and signal sampling module for system power supply to the concrete circuit diagram of implementing of the present invention, for presetting the rotational speed regulation module of motor speed.
The control method of the driving control system of the concrete a kind of single-phase brushless direct-current motor implemented of the present invention, as shown in Figure 2, the method comprises its idiographic flow:
S1. system powers on.
In Fig. 1, DC power supplier 1, is used to each circuit module in system that DC power supply is provided.
S2. adjusting rotary speed adjustment module 10, default expectation motor speed Ve.
In Fig. 1, control module 2, power end and 1 electrical connection of direct current supply module, output and 5 electrical connections of power drive electric bridge module, control described power drive electric bridge module 5 actions for generation of control signal.The second input I2 electrical connection of the signal output part of rotational speed regulation module 10 and control module 2.
By adjusting rotary speed adjustment module 10, utilize control module 2 to calculate required expectation motor speed Ve.In the present embodiment, rotational speed regulation module 10 is slide rheostat, by the resistance of access resistance is regulated, thereby reaches the requirement of required rotating speed.
S3. controller is sampled to coherent signal and is calculated real electrical machinery rotating speed Vr.
In Fig. 1, drive electric bridge 5, by the first switching tube Q1, second switch pipe Q2, the 3rd switching tube Q3 and the 4th switching tube Q4, form bridge circuit, upper brachium pontis is connected with DC power supplier 1, drives electric bridge 5 to move for drive motors.
Signal sampling module, comprises hall signal sampling module 6, current sample module 7, temperature sampling module 8 and voltage sample module 9.
Wherein, hall signal sampling module 6 and control module 2 electrical connections, in hall signal sampling module 6, comprise a Hall element, signals collecting end and the motor of Hall element are of coupled connections, and by the signal feedback collecting to control module 2 the 3rd input I3, the corresponding change of current sequential of control module 2 output.In addition, control module 2, by the hall signal of hall signal sampling module 6 samplings, is measured the position relationship of rotor, calculates real electrical machinery rotating speed Vr.Control module 2 arranges one according to the motor speed obtaining and shifts to an earlier date in the excitation time in advance of the signal reversing time point of hall signal.
Current sample module 7 is as shown in the dotted line frame part in Fig. 1, and the four-input terminal mouth I4 that realizes control module 2 does electric current A/D sampling to set node A and Node B, monitors in real time electric bridge operating current.
Temperature sampling module 8 comprises a thermistor NTC, in order to the 5th input port I5 that realizes control module 2 to the real-time sampling of motor temperature and monitoring.
Voltage sample module 9, the potential-divider network being comprised of resistance R 3 and resistance R 4 forms, and the first input end mouth I1 that realizes control module 2 does voltage A/D sampling to set node C, monitors in real time the operating voltage of electric bridge.
For providing enough driving signals to arrive power drive electric bridge module, between control module 2 and driving electric bridge 5, be provided with the first level conversion driver module 3 and second electrical level conversion drive module 4.
Wherein, the power end of the first level conversion driver module 3 and second electrical level conversion drive module 4 and DC power supplier 1 electrical connection, the grid electrical connection of the output of the first level conversion driver module 3 and the first switching tube Q1 and second switch pipe Q2, the first output O1 of its input and control module 2 and the second output O2 electrical connection; The grid electrical connection of the output of second electrical level conversion drive module 4 and the 3rd switching tube Q3 and the 4th switching tube Q4, the 3rd output O3 of its input and control module 2 and the 4th output O4 electrical connection.
The driving signal that control module 2 provides is finally reflected in power drive electric bridge module 5, according to the feedback signal switched energization sense of current of hall signal sampling module 6.
S4. compare real electrical machinery rotating speed Vr and expectation motor speed Ve, if real electrical machinery rotating speed Vr increases motor winding excitation time lower than expectation motor speed Ve, otherwise reduce motor winding excitation time.
In the half period of any one signal of telecommunication, comprise two or more motor winding excitation time sections, and two or more motor winding time of afterflow section.
In the half period of any one signal of telecommunication, motor winding excitation time and time of afterflow are all with the variation real-time change of rotating speed.That is, when real electrical machinery rotating speed Vr is during higher than expectation motor speed Ve, reduce motor winding excitation time, when real electrical machinery rotating speed Vr is during lower than expectation motor speed Ve, increase winding excitation time.Because be engraved in variation when motor speed is, Hall period is also along with variation so, and corresponding excitation time and time of afterflow also all change.
In Fig. 1, the operation principle of circuit is as follows:
Motor permanent magnetic rotor produces air-gap field, by control module 2 output drive signals, make the first switching tube Q1 and the 4th switching tube Q4 conducting, second switch pipe Q2 and the 3rd switching tube Q3 are closed, to power drive electric bridge module 5, pass into forward constant electric current, motor stator winding also produces air-gap field, interact and produce the moment of constant, motor permanent magnetic rotor will produce clockwise electromagnetic torque.The size of electromagnetic torque and current related, by the signal resulting expectation motor speed Ve of the rotational speed regulation module 10 of relatively sampling and the resulting real electrical machinery rotating speed of the signal Vr of sampling Hall signal sampling module 6, control module 2 output respective drive signal regulate excitation time, thereby regulate realization action time of square power to regulate motor speed.When motor permanent magnetic rotor Rotate 180 °, control module 2 makes second switch pipe Q2 and the 3rd switching tube Q3 conducting according to the hall signal output drive signal of Hall element 61 samplings, the first switching tube Q1 and the 4th switching tube Q4, to power drive electric bridge module 5, pass into reverse constant electric current, p-m rotor will produce clockwise electromagnetic torque, and motor permanent magnetic rotor can turn clockwise under electromagnetic torque effect in the clockwise direction continuously.
In the present embodiment, excitation time comprises excitation time and adjustment excitation time in advance, by control module 2, controls time half period that excitation times are less than the Hall signal of telecommunication of sampling of adjusting.
In the present embodiment, for a certain particular motor, there is a quantifiable relational expression pre-set time in its excitation time, time of afterflow, excitation.Relational expression is as follows:
a: Ht = Et + Fct；
b : Fwt ≤0.13 * Ht；
c : Et ≤0.63 * Ht；
d : St < Et/2 。
Wherein, Ht is the half period of the Hall signal of telecommunication; Et is interior total excitation time of the half period of a Hall signal of telecommunication; Fct is interior total time of afterflow of the half period of a Hall signal of telecommunication; Fwt is interior excitation time in advance of the half period of a Hall signal of telecommunication; St is single split excitation time width.For different single-phase BLDC motors, can do certain fine setting.
Sequential chart not exclusive, rotating speed difference in half period of the Hall signal of telecommunication excitation time section different with time of afterflow section number, rotating speed is high and low, directly affects the number of the interior excitation time section of half period of the Hall signal of telecommunication, also affects its width.In Fig. 3, provide wherein a kind of basic driving and controlled sequential chart, wherein:
HS: represent Hall element signal sequence;
AH: represent to drive electric bridge upper left brachium pontis sequential;
AL: represent to drive electric bridge lower-left brachium pontis sequential;
BH: represent to drive electric bridge upper right brachium pontis sequential;
BL: represent to drive electric bridge bottom right brachium pontis sequential.
In Fig. 2, in the half period of each Hall signal of telecommunication, winding excitation time section summation is not more than 1/2 of the Hall signal of telecommunication half period, and comprises winding and shift to an earlier date excitation time section.
In the half period of each Hall signal of telecommunication, winding shifts to an earlier date 1/4 of half period that excitation time section is not more than the Hall signal of telecommunication.
In the half period of each Hall signal of telecommunication, the single excitation time section of winding should be controlled at certain width, complies with driven single-phase BLDC and finely tunes.
In the half period of each Hall signal of telecommunication, the single time of afterflow section of winding should be controlled at certain width, complies with driven single-phase BLDC and finely tunes.
In the half period of each Hall signal of telecommunication, the single excitation time section of motor winding is not necessarily identical with the single time of afterflow section of motor winding width.
It is more than preferably implementation of the present invention; it should be noted that; in the situation that not deviating from spirit of the present invention and essence thereof; those of ordinary skill in the art are when making according to the present invention various corresponding changes and distortion, but these changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (6)
1. the control method of the driving control system of a single-phase brushless direct-current motor, described system comprises DC power supplier (1), control module (2), the power drive electric bridge module (5) being connected with described control module (2) signal and signal sampling module for system power supply, for the rotational speed regulation module (10) of default motor speed, it is characterized in that, described method comprises
S1. system powers on;
S2. adjusting rotary speed adjustment module, presets expectation motor speed Ve;
S3. control module is sampled to coherent signal and is calculated real electrical machinery rotating speed Vr;
S4. compare real electrical machinery rotating speed Vr and expectation motor speed Ve, if real electrical machinery rotating speed Vr increases motor winding excitation time lower than expectation motor speed Ve, otherwise reduce motor winding excitation time.
2. the control method of the driving control system of single-phase brushless direct-current motor according to claim 1, it is characterized in that, the rotor-position that described real electrical machinery rotating speed Vr is of coupled connections and records according to the Hall element comprising in signal sampling module and brshless DC motor, calculates by control module.
3. the control method of the driving control system of single-phase brushless direct-current motor according to claim 1, is characterized in that, also comprises that one shifts to an earlier date in the excitation time in advance of the signal reversing time point of hall signal in the method.
4. the control method of the driving control system of single-phase brushless direct-current motor according to claim 3, is characterized in that, described excitation time is in advance according to motor speed adjustment.
5. the control method of the driving control system of single-phase brushless direct-current motor according to claim 1, it is characterized in that, in the half period of described any one Hall signal of telecommunication, comprise two or more motor winding excitation time sections, and two or more motor winding time of afterflow section.
6. the control method of the driving control system of single-phase brushless direct-current motor according to claim 1, is characterized in that, in the half period of described any one Hall signal of telecommunication, motor winding excitation time and time of afterflow are all with the variation real-time change of rotating speed.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207543A (en) * | 2015-10-12 | 2015-12-30 | 上海晶丰明源半导体有限公司 | Analog closed loop speed control device and method for brushless direct current motor |
| CN105429547A (en) * | 2015-12-11 | 2016-03-23 | 浙江亿利达风机股份有限公司 | Single-phase brushless direct current motor vector control method based on virtual phase construction |
| CN113078850A (en) * | 2019-12-18 | 2021-07-06 | 珠海格力电器股份有限公司 | Brushless direct current motor control method and device, brushless direct current motor and electric appliance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407711A (en) * | 2001-06-25 | 2003-04-02 | 美蓓亚株式会社 | Speed control circuit of brushless direct-current fan motor |
| CN101865124A (en) * | 2010-06-18 | 2010-10-20 | 浙江工业大学 | A Control Method for Improving the COP Value of DC Inverter Compressor |
| CN202068308U (en) * | 2011-05-12 | 2011-12-07 | 杭州赛微电机有限公司 | Improved single-phase brushless direct current motor |
| CN203278729U (en) * | 2013-04-19 | 2013-11-06 | 杭州微光电子股份有限公司 | Electronic commutation brushless direct current single-phase blower fan circuit |
| CN103404022A (en) * | 2010-10-05 | 2013-11-20 | 戴森技术有限公司 | Control of an electrical machine |
| CN103573664A (en) * | 2012-07-24 | 2014-02-12 | 台达电子工业股份有限公司 | Fan control method and control system |
-
2014
- 2014-06-05 CN CN201410245698.3A patent/CN104009681A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1407711A (en) * | 2001-06-25 | 2003-04-02 | 美蓓亚株式会社 | Speed control circuit of brushless direct-current fan motor |
| CN101865124A (en) * | 2010-06-18 | 2010-10-20 | 浙江工业大学 | A Control Method for Improving the COP Value of DC Inverter Compressor |
| CN103404022A (en) * | 2010-10-05 | 2013-11-20 | 戴森技术有限公司 | Control of an electrical machine |
| CN202068308U (en) * | 2011-05-12 | 2011-12-07 | 杭州赛微电机有限公司 | Improved single-phase brushless direct current motor |
| CN103573664A (en) * | 2012-07-24 | 2014-02-12 | 台达电子工业股份有限公司 | Fan control method and control system |
| CN203278729U (en) * | 2013-04-19 | 2013-11-06 | 杭州微光电子股份有限公司 | Electronic commutation brushless direct current single-phase blower fan circuit |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207543A (en) * | 2015-10-12 | 2015-12-30 | 上海晶丰明源半导体有限公司 | Analog closed loop speed control device and method for brushless direct current motor |
| CN105207543B (en) * | 2015-10-12 | 2018-03-16 | 上海晶丰明源半导体股份有限公司 | The analog closed-loop arrangements for speed regulation and its method of brshless DC motor |
| CN105429547A (en) * | 2015-12-11 | 2016-03-23 | 浙江亿利达风机股份有限公司 | Single-phase brushless direct current motor vector control method based on virtual phase construction |
| CN105429547B (en) * | 2015-12-11 | 2018-05-29 | 浙江亿利达风机股份有限公司 | Single-phase brushless direct-current motor vector control method based on virtual phase structure |
| CN113078850A (en) * | 2019-12-18 | 2021-07-06 | 珠海格力电器股份有限公司 | Brushless direct current motor control method and device, brushless direct current motor and electric appliance |
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Application publication date: 20140827 |