CN2845304Y - Monolithic PWM controller for brushless motor of electric vehicle with sensor - Google Patents
Monolithic PWM controller for brushless motor of electric vehicle with sensor Download PDFInfo
- Publication number
- CN2845304Y CN2845304Y CNU2005201027065U CN200520102706U CN2845304Y CN 2845304 Y CN2845304 Y CN 2845304Y CN U2005201027065 U CNU2005201027065 U CN U2005201027065U CN 200520102706 U CN200520102706 U CN 200520102706U CN 2845304 Y CN2845304 Y CN 2845304Y
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- magnetic steel
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- steel position
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Abstract
The utility model relates to a monolithic computer PWM controller for a brushless direct current motor of an electric vehicle with a sensor. The utility model belongs to the application of monolithic computer technique in the field of direct current motors. The utility model comprises a rotor magnetic steel position sensor. The utility model is characterized in that a monolithic computer is respectively connected with the rotor magnetic steel position sensor, a reverse gate circuit and an NOR gate. Through connection between a reverse device and the NOR gate, the control of phase change can be realized by adopting PWM technique through detecting the relation between three rotor magnetic steel position sensor signals provided by a hall element and six power tubes. The rotation speed of the brushless direct current motor can be controlled through the PMW control of an electric level signal of a monolithic computer control opening, and an external D/A converter and a built-in D/A converter can be omitted. The utility model innovates and realizes the control of the phase change, the rotation speed and the starting current of various brushless direct current motors, and the utility model is provided with a plurality of interfaces for extending functions. The utility model overcomes the defect that an external A/D converter, a built-in A/D converter, a special integrated circuit controller have high cost, poor compatibility and no function extending ability.
Description
Technical field the invention relates to a kind of monolithic processor control device of attached brushless DC motor of electric vehicle, particularly a kind of single-chip PWM control device of electric vehicle brushless DC motor with sensor.Belong to singlechip technology in the DC MOTOR CONTROL Application for Field.
Before background technology the invention applying date, the control of attached brushless DC motor of electric vehicle is adopted internal or external A/D converter or is adopted application-specific integrated circuit (ASIC), but has the cost height, the defective that capacitive difference and function can't be expanded.
The purpose of summary of the invention the invention provides a kind of single-chip PWM control device of electric vehicle brushless DC motor with sensor.
The invention solves the technical scheme that its technical problem adopts: this device comprises the rotor magnetic steel position transducer; Single-chip microcomputer is connected with rotor magnetic steel position transducer, reverse swing door circuit, NOR gate respectively.By being connected with reverser and NOR gate, adopt the relation between PWM technology and three rotor magnetic steel position sensor signals by detecting that Hall element provides and 6 the power tube conductings, realization commutation control, by PWM control to Single-chip Controlling mouth level signal, realize the rotating speed of brshless DC motor, and save external and built-in D/A.The rotor magnetic steel position sensor signal of three band Hall elements is connected with the single-chip processor i/o input respectively, the single-chip processor i/o output is connected with reverser and NOR gate input respectively, and reverser output AND output is connected with the control end of 6 power tubes respectively.The state of the rotor magnetic steel position sensor signal of three band Hall elements and the relation between 6 power tube conductings are left among the EPROM of single-chip microcomputer with form.Whether single-chip microcomputer is controlled the power tube conducting by the output control word by detection rotor magnet steel position sensor signal.
The beneficial effect of the invention is: realize the control to all kinds of brshless DC motors, and leave a plurality of interfaces for function expansion, overcome the defective that external or built-in A/D converter, application-specific integrated circuit (ASIC) controller cost height, poor compatibility, function can't be expanded.Be widely used in the control of commutation, rotating speed and starting current of the brshless DC motor of all kinds of electric motor car band Hall elements.
Appended drawings 1 is the electrical schematic diagram of the invention.
Embodiment is consulted Fig. 1.The invention single-chip microcomputer adopts U.S. MICROCHIP company 8-bit microcontroller, and present embodiment adopts PIC16C57.Also visual expanded function adopts PIC16C67.Delivery outlet comprises that I/O, I/O (2), I/O (3) are connected with the input of 7406 reverse swing door circuit.7406 output respectively with three MOSFET power tube VF
1, VF
3, VF
5Control end be connected; Delivery outlet comprises that the input of I/O (4), I/O (5), I/O (6) AND 74LS33 is connected; Three inputs of delivery outlet I/O (10) AND 74LS33 are connected; Three outputs of NOR gate 74LS33 respectively with three MOSFET power tube VF
2, VF
4, VF
6Control end be connected.Input I/O (7), I/O (8), I/O (9) respectively with three the band Hall elements rotor magnetic steel position sensor signal H
1, H
2, H
3Be connected.The invention realizes the rotating speed control of brshless DC motor by output level being carried out PWM control.The described PMW of the invention is the pulse width modulation controlled technology, is the turn-on and turn-off of utilizing semiconductor switch device, and direct voltage is become the potential pulse row, and the width or the cycle of control potential pulse are to reach a kind of technology of transformation or frequency conversion purpose.In the process of the normal operation of brshless DC motor, single-chip microcomputer calculates rotating speed of motor by the cycle from the rotor-position sensor signal, and it with given rotating speed relatively, as be higher than given rotating speed, then reduce output numerical value, reduce the electric current of motor, reduce the purpose that its commentaries on classics connects to reach.Otherwise, if the rotating speed that records is lower than given rotating speed, then increase output numerical value, and then the electric current of expanded motor, thereby its rotating speed improved.
Claims (2)
1, a kind of single-chip PWM control device of electric vehicle brushless DC motor with sensor comprises the rotor magnetic steel position transducer; It is characterized in that single-chip microcomputer is connected with rotor magnetic steel position transducer, reverse swing door circuit, NOR gate respectively; By being connected with reverser and NOR gate, adopt the relation between PWM technology and three rotor magnetic steel position sensor signals by detecting that Hall element provides and 6 the power tube conductings, realization commutation control, by PWM control to Single-chip Controlling mouth level signal, realize the rotating speed of brshless DC motor, and save external and built-in D/A.
2, the single-chip PWM control device of electric vehicle brushless DC motor with sensor according to claim 1, the rotor magnetic steel position sensor signal that it is characterized in that three band Hall elements is connected with the single-chip processor i/o input respectively, the single-chip processor i/o output is connected with reverser and NOR gate input respectively, and reverser output AND output is connected with the control end of 6 power tubes respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201027065U CN2845304Y (en) | 2005-06-06 | 2005-06-06 | Monolithic PWM controller for brushless motor of electric vehicle with sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005201027065U CN2845304Y (en) | 2005-06-06 | 2005-06-06 | Monolithic PWM controller for brushless motor of electric vehicle with sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2845304Y true CN2845304Y (en) | 2006-12-06 |
Family
ID=37487246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005201027065U Expired - Fee Related CN2845304Y (en) | 2005-06-06 | 2005-06-06 | Monolithic PWM controller for brushless motor of electric vehicle with sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2845304Y (en) |
-
2005
- 2005-06-06 CN CNU2005201027065U patent/CN2845304Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |