CN204696967U - Dual chip brshless DC motor driving control system - Google Patents
Dual chip brshless DC motor driving control system Download PDFInfo
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- CN204696967U CN204696967U CN201520352367.XU CN201520352367U CN204696967U CN 204696967 U CN204696967 U CN 204696967U CN 201520352367 U CN201520352367 U CN 201520352367U CN 204696967 U CN204696967 U CN 204696967U
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- microprocessor
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- drive circuit
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Abstract
The utility model relates to a kind of dual chip brshless DC motor driving control system.This system adopts ARM and CPLD to jointly control, and the set-point of the moment of this control system, speed and position is from host computer, and the value of feedback of motor status calculates according to the value of feedback of the three-phase Hall element in motor.ARM is connected with host computer, receives the set-point of host computer transmission and carries out Torque Control, speeds control or Position Control according to the instruction of host computer; CPLD receives the feedback signal of three-phase Hall device, and carry out the calculating of position and speed, calculated value is delivered to ARM, ARM carries out control algorithm in conjunction with calculated value and set-point, and sends control word.CPLD receives the control word of ARM and resolves to control command, controls motor rotation by the drive circuit of motor.This system is needed velocity and position transducer not, simplifies system configuration, can realize torque, the high accuracy of rotating speed and position controls.
Description
Technical field
The utility model belongs to technical field of servo control, relates to a kind of dual chip that adopts and combines the driving control system controlled brushless electric machine.
Background technology
The rotor that brshless DC motor is manufactured by permanent magnetic material, to form with the stator of coil windings and position transducer.While it possesses the superior speed adjusting performance of direct current machine, eliminate again carbon brush, all kinds of problems that slip ring structure brings.Also there is the advantages such as structure is simple, efficiency is high, reliable.
The mode of speed regulation of brshless DC motor is realized by open loop PWM usually, the change of rotating speed is realized by the given duty ratio in outside, but this mode of speed regulation is applicable to the less demanding occasion of speed governing, higher speed adjusting performance requirement cannot be met, also cannot realize controlling the high accuracy of torque rotary speed.Meanwhile, traditional single-chip computer control system, motor special control system and DSP control system, when realizing error protection, the fault secure circuit of realization, response time delay is long, reduces the fail safe of system.
The closed speed control of traditional brshless DC motor and closed loop location control system, need to utilize encoder to detect the speed of motor and position as transducer, improve the production cost of system in use.
Utility model content
The purpose of this utility model is that providing a kind of realizes brshless DC motor driving control system that is quick, precisely speed governing.
The technical solution of the utility model is: dual chip brshless DC motor driving control system, comprise host computer, drive circuit, measure voltage & current and comparison circuit and control system, the built-in three-phase Hall element of brshless DC motor, described drive circuit is three phase full bridge circuit, described control system comprises interconnective logic processor, microprocessor, and the drive circuit be connected with logic processor;
Logic processor comprises computing unit, protected location, driving control unit and communication unit, and wherein, computing unit receives the feedback signal of three-phase Hall element, go forward side by side line position computing and velocity arithmetic; Communication unit is used for the communication with microprocessor;
Host computer is connected with microprocessor, and host computer transmission controls set-point signal to microprocessor, and controls microprocessor-based control pattern;
Microprocessor receives from the position of logic processor and speed calculated value, in conjunction with the set-point of host computer, pid algorithm is adopted to calculate the controlling value of speed, position and moment, and controlling value is fed back to the driving control unit of logic processor, logic processor is connected with drive circuit by drive circuit, drive circuit receives the given control signal of driving control unit, controls brshless DC motor work by drive circuit;
Described measure voltage & current and comparison circuit comprise current detecting and comparison circuit and voltage detecting and comparison circuit; the current value of collection and magnitude of voltage are fed back to the ADC collection terminal of microprocessor by respectively; simultaneously by electric current comparison value and voltage compare value transmit to logic processor, protected location carries out the judgement of overvoltage and overcurrent.
Preferably: logic processor adopts CPLD chip, microprocessor adopts ARM chip, and the two is communicated by spi bus.
The beneficial effects of the utility model are:
(1) the utility model provides a kind of dual chip driving system for brushless motor.ARM+CPLD dual chip combines the high accuracy control realizing torque, rotating speed, position, make use of the quick response advantage of CPLD chip simultaneously, achieves the quick protection of motor overvoltages, over current fault;
(2) this system not operating speed and position-detection sensor, realizes the accurate Calculation of speed and position by logic processor internal logic, and then realizes speed and the position-force control of motor, greatly reduces system cost;
(3) customized SPI core in a kind of CPLD sheet, to have communicated sequential to adapt to SPI, achieve the SPI full-duplex communication between ARM and CPLD, simultaneously self-defined a kind of full-duplex communication agreement based on spi bus; This SPI core has very strong portability, has unified external interface, can easily be transplanted on any a CPLD chip to realize SPI communication function.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is embodiment Control system architecture schematic diagram.
Fig. 3 is driving circuit structure schematic diagram.
Fig. 4 current detecting and comparison circuit.
Fig. 5 voltage detecting and comparison circuit.
Embodiment
As shown in Figure 1, dual chip brshless DC motor driving control system, comprises host computer, drive circuit, measure voltage & current and comparison circuit and control system, and the built-in three-phase Hall element of brshless DC motor, drive circuit is three phase full bridge circuit.
Control system comprises interconnective logic processor, microprocessor, and the drive circuit be connected with logic processor.As shown in Figure 2, logic processor adopts CPLD chip, and microprocessor adopts ARM chip, and the two is communicated by spi bus.This system does not adopt position and velocity transducer, but adopts the inner Hall element value of feedback of brshless DC motor, carries out the calculating of position and speed.CPLD carries out position computing and velocity arithmetic after receiving three-phase Hall element feedback signal, obtains positional value and the velocity amplitude of brushless DC motor rotor, is called the calculated value of position and speed herein, is delivered to ARM.
Host computer is connected with ARM, the work of control ARM, carries out speeds control, Position Control or Torque Control for regulating and controlling ARM.When host computer assigns control command, be delivered in ARM by control set-point, ARM, according to set-point and calculated value, according to pid algorithm, draws the controlling value of speed, position and moment, and controlling value is fed back to CPLD.CPLD is connected with drive circuit by drive circuit, and drive circuit adopts UCC27211MOSFET driver, Tu3Wei Qiao road 1 driving circuit structure schematic diagram, other two road and bridge the drive circuit on road identical with this line structure, just PWM modulation signal receiving port difference.The controlling value that drive circuit receives and PWM modulation signal, PWMA0-PWMA5 respectively from CPLD holds, and under the pwm signal control that CPLD produces, controls the switch of field effect transistor, make the three-phase windings of motor can sequential turn-on on request, realize the correct commutation of stator winding; Next is under the different PWM duty cycle control signal effect of CPLD transmission, realizes the variable voltage control of motor.
The current value of collection and magnitude of voltage are fed back to the ADC collection terminal of ARM by current detecting and comparison circuit and voltage detecting and comparison circuit; simultaneously by electric current comparison value and voltage compare value transmit to logic processor; carry out the judgement of overvoltage and overcurrent; when circuit malfunctions; logic processor can take the lead in responding, and carry out Quick brake control to motor, microprocessor following closely; issue brake instruction and again control motor brake, guarantee the fast failure protection of motor.
Claims (2)
1. dual chip brshless DC motor driving control system, comprise host computer, drive circuit, measure voltage & current and comparison circuit and control system, the built-in three-phase Hall element of brshless DC motor, described drive circuit is three phase full bridge circuit, it is characterized in that: described control system comprises interconnective logic processor, microprocessor, and the drive circuit be connected with logic processor;
Logic processor comprises computing unit, protected location, driving control unit and communication unit, and wherein, computing unit receives the feedback signal of three-phase Hall element, go forward side by side line position computing and velocity arithmetic; Communication unit is used for the communication with microprocessor;
Host computer is connected with microprocessor, and host computer transmission controls set-point signal to microprocessor, and controls microprocessor-based control pattern;
Microprocessor receives from the position of logic processor and speed calculated value, in conjunction with the set-point of host computer, pid algorithm is adopted to calculate the controlling value of speed, position and moment, and controlling value is fed back to the driving control unit of logic processor, logic processor is connected with drive circuit by drive circuit, drive circuit receives the given controlling value of driving control unit, controls brshless DC motor work by drive circuit;
Described measure voltage & current and comparison circuit comprise current detecting and comparison circuit and voltage detecting and comparison circuit; the current value of collection and magnitude of voltage are fed back to the ADC collection terminal of microprocessor by respectively; simultaneously by electric current comparison value and voltage compare value transmit to logic processor, protected location carries out the judgement of overvoltage and overcurrent.
2. dual chip brshless DC motor driving control system as claimed in claim 1, it is characterized in that: described logic processor adopts CPLD chip, microprocessor adopts ARM chip, and the two is communicated by spi bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520352367.XU CN204696967U (en) | 2015-05-27 | 2015-05-27 | Dual chip brshless DC motor driving control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520352367.XU CN204696967U (en) | 2015-05-27 | 2015-05-27 | Dual chip brshless DC motor driving control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204696967U true CN204696967U (en) | 2015-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520352367.XU Expired - Fee Related CN204696967U (en) | 2015-05-27 | 2015-05-27 | Dual chip brshless DC motor driving control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN204696967U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105450100A (en) * | 2015-07-03 | 2016-03-30 | 浙江海洋学院 | Brushless motor driving circuit and control method thereof |
| CN109062056A (en) * | 2018-09-17 | 2018-12-21 | 长安大学 | A kind of electric bicycle intelligence control system and its control method |
| CN113258831A (en) * | 2021-06-18 | 2021-08-13 | 山东用新电子科技有限公司 | Speed regulation control device and speed regulation system |
-
2015
- 2015-05-27 CN CN201520352367.XU patent/CN204696967U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105450100A (en) * | 2015-07-03 | 2016-03-30 | 浙江海洋学院 | Brushless motor driving circuit and control method thereof |
| CN105450100B (en) * | 2015-07-03 | 2020-08-18 | 浙江海洋学院 | Brushless motor driving circuit and control method thereof |
| CN109062056A (en) * | 2018-09-17 | 2018-12-21 | 长安大学 | A kind of electric bicycle intelligence control system and its control method |
| CN113258831A (en) * | 2021-06-18 | 2021-08-13 | 山东用新电子科技有限公司 | Speed regulation control device and speed regulation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Ming Inventor after: Wang Jianguo Inventor after: Zhang Jiaming Inventor after: Chen Zhen Inventor after: Zhang Shuai Inventor before: Li Ming Inventor before: Wang Jianguo Inventor before: Zhang Jiaming |
|
| COR | Change of bibliographic data | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20170527 |