CN104362909A - Brushless direct-current motor controller - Google Patents
Brushless direct-current motor controller Download PDFInfo
- Publication number
- CN104362909A CN104362909A CN201410516736.4A CN201410516736A CN104362909A CN 104362909 A CN104362909 A CN 104362909A CN 201410516736 A CN201410516736 A CN 201410516736A CN 104362909 A CN104362909 A CN 104362909A
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- CN
- China
- Prior art keywords
- circuit
- motor controller
- brushless direct
- current motor
- direct current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention designs a controller and mainly relates to a brushless direct-current motor controller comprising a MCU (microcontroller unit), a drive circuit, a power circuit, a current feedback circuit and a position detection circuit. Motor speed and motor current are subjected to closed-loop control, dynamic and static performances of the controller are improved, and control performance of the controller is optimized.
Description
Technical field
The present invention designs a kind of controller, relates generally to a kind of brushless direct current motor controller.
Background technology
Electric bicycle is a kind of safe, economic, clean green traffic instrument, in the energy, environment, not only there are superiority and the competitiveness of its uniqueness, and modern control technology can be utilized more easily to realize the target of its electromechanical integration, thus there is vast potential for future development.
A lot of for the less demanding application scenario of speed governing, the mode of speed regulation of brshless DC motor realizes mainly through open loop PWM.Turn-on logic signal superposes pwm signal, realizes rotation speed change by the duty ratio of the given PWM in outside, hardware implementing is easy, and cost is lower.
Summary of the invention
The present invention is intended to propose a kind of brushless direct current motor controller.
A kind of brushless direct current motor controller, is characterized in that: comprise MCU, drive circuit, power circuit, current feedback circuit, position detecting circuit and without sensor circuit.
Preferably, described MCU model is mPD78F0712.
Preferably, described drive circuit adopts discrete device to form drive circuit.
Preferably, described power circuit supply power voltage is direct current 48v, adopts three-phase inverter bridge circuit, is energized between two.
The present invention has carried out closed-loop control to the speed of electricity price and electric current, improves its dynamic and static state characteristic, optimizes its control performance.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention.
Embodiment
A kind of brushless direct current motor controller, comprises MCU, drive circuit, power circuit, current feedback circuit, position detecting circuit and without sensor circuit.Described MCU model is mPD78F0712.Described drive circuit adopts discrete device to form drive circuit.Described power circuit supply power voltage is direct current 48v, adopts three-phase inverter bridge circuit, is energized between two.
Speed given circuit given circuit obtains the simulation given speed of handle grip for bicycle, and drive circuit converts the drive singal of power MOSFET to the drive singal of MCU, controls the biological conducting state of power tube; Power circuit realizes direct current to the exchange exchanged, and control the electric current of motor, current feedback is for detecting current of electric; Position feedback is for detecting the position of rotor; Without the position of sensor circuit according to the back electromotive force determination rotor of motor.
Brshless DC motor adopts the hall device of three space differences 120 degree to carry out position probing, is processed, obtain correct rotor position information after filtering process by three of single-chip microcomputer external interrupt input pins.According to the phase array logic of changing determined, commutation is carried out to motor by MCU, obtain continuous print Driving Torque, thus make the continuous operation that motor can be correct.
The effect of voltage detecting circuit is the output voltage detecting storage battery in real time, thus prevents storage battery in running to be damaged because of overdischarge.By carrying out electric resistance partial pressure to output voltage and being changed by the A/D of control chip, realize under-voltage protection function in a control program.
Claims (4)
1. a brushless direct current motor controller, is characterized in that: comprise MCU, drive circuit, power circuit, current feedback circuit, position detecting circuit and without sensor circuit.
2. as claim 1 brushless direct current motor controller, it is characterized in that: described MCU model is mPD78F0712.
3. as claim 1 brushless direct current motor controller, it is characterized in that: described drive circuit adopts discrete device to form drive circuit.
4. as claim 1 brushless direct current motor controller, it is characterized in that: described power circuit supply power voltage is direct current 48v, adopt three-phase inverter bridge circuit, be energized between two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410516736.4A CN104362909A (en) | 2014-09-30 | 2014-09-30 | Brushless direct-current motor controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410516736.4A CN104362909A (en) | 2014-09-30 | 2014-09-30 | Brushless direct-current motor controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104362909A true CN104362909A (en) | 2015-02-18 |
Family
ID=52530143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410516736.4A Pending CN104362909A (en) | 2014-09-30 | 2014-09-30 | Brushless direct-current motor controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104362909A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026796A (en) * | 2016-07-13 | 2016-10-12 | 河海大学 | Brushless DC motor speed regulation system |
| CN106067744A (en) * | 2016-05-18 | 2016-11-02 | 陕西科技大学 | A kind of novel intelligent motor controller |
| CN108233796A (en) * | 2016-12-09 | 2018-06-29 | 中国科学院沈阳自动化研究所 | A kind of brushless direct current motor controller in hydraulic system |
-
2014
- 2014-09-30 CN CN201410516736.4A patent/CN104362909A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106067744A (en) * | 2016-05-18 | 2016-11-02 | 陕西科技大学 | A kind of novel intelligent motor controller |
| CN106026796A (en) * | 2016-07-13 | 2016-10-12 | 河海大学 | Brushless DC motor speed regulation system |
| CN108233796A (en) * | 2016-12-09 | 2018-06-29 | 中国科学院沈阳自动化研究所 | A kind of brushless direct current motor controller in hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150218 |
|
| WD01 | Invention patent application deemed withdrawn after publication |