CN104660116A - Brushless direct-current motor for low speed and high power of automobile gearshift - Google Patents
Brushless direct-current motor for low speed and high power of automobile gearshift Download PDFInfo
- Publication number
- CN104660116A CN104660116A CN201310600644.XA CN201310600644A CN104660116A CN 104660116 A CN104660116 A CN 104660116A CN 201310600644 A CN201310600644 A CN 201310600644A CN 104660116 A CN104660116 A CN 104660116A
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- China
- Prior art keywords
- control
- motor
- phase
- magnetic field
- magnet
- 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.)
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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
- H02P6/085—Arrangements for controlling the speed or torque of a single motor in a bridge configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
- F16H2061/326—Actuators for range selection, i.e. actuators for controlling the range selector or the manual range valve in the transmission
Abstract
The invention relates to a brushless direct-current motor for low speed and high power of an automobile gearshift. The brushless direct-current motor is characterized by comprising a driving circuit and a brushless motor, wherein the brushless motor is connected onto a shell, and the output shaft of the direct-current brushless motor is connected with a gear speed reducer; a magnet is embedded at the shaft end of a sensing shaft, a linear Hall sensor is used for detecting the position of a gear shifting fork, and the linear Hall sensor is arranged at the position corresponding to the magnet; the output shaft of the gear speed reducer is connected to the automobile gearshift mechanism. The brushless direct-current motor is low in rotation noise and adjustable in low rotating speed, the impact for the speed reducer is effectively reduced, and the service life is prolonged.
Description
Technical field
The present invention relates to a kind of automobile gear shift technology, particularly brshless DC motor high-power for the low speed of automobile gear shift.
Background technology
In an electric electric-type AMT system, operating motor has selected brushless DC motor and mechanical trip control technology, motion and power is delivered on selector fork respectively exactly, thus controls gear shift by certain mechanical device-reducing gear.This Volume control is brshless DC motor, according to gear shift timing requirements, is driven and selects selector fork, complete and select gearshift control by reductor.In order to ensure speed and the precision of gearshift, mechanical trip control technology have employed the control method of open loop+closed loop, and ring opening moiety is in order to the speed of service, and closed loop is the precision ensureing to control.Feature in control is divided into mechanical mechanism to connect and mechanical trip control technology, there are many nonlinear time-varyings, external interference situation in electromechanics mechanism in implementation procedure, mechanical trip control technology achieves target instruction target word very well and quick and precisely follows the tracks of, and traditional linear control theory is difficult to deal with problems well.
Be divided into stepping motor and direct current machine in traditional DC MOTOR CONTROL, stepping motor output torque and rotating speed are inversely proportional to, and direct current machine output torque and rotating speed are directly proportional.These two kinds of motors cannot realize high-power moment of torsion simultaneously and export when low speed and high speed, all need the situation of high pulling torque to adapt to for high speed low speed.
Summary of the invention
The object of this invention is to provide a kind of brshless DC motor high-power for automobile gear shift low speed.
The object of the present invention is achieved like this, and the low speed that brshless DC motor is used for automobile gear shift is high-power, and it is characterized in that: comprise drive circuit and brushless electric machine, brushless electric machine is connected on housing, and the output shaft of DC brushless motor is connected with mechanical reduction gear; Magnet is inlaid in the axle head of sensing shaft, and linear hall sensor is for detecting the position of selector fork, and linear hall sensor is arranged on the position corresponding with magnet; Mechanical reduction gear output shaft connects automobile gearshift mechanism, wherein, drive circuit: comprise Q1, Q2, Q3, Q4, Q5, Q6 totally 6 MOSFET, Q1, Q3, Q5 are upper arm, just connect power supply, Q2, Q4, Q6 are underarm, connect power supply ground, UH, UL, VH, VL, WH, WL connect MCU, are used for the conducting of control 6 MOSFET or shutoff; The output of UH and UL control U phase, open to the U power supply timing UH control Q1 that is connected, UL control Q2 closes; During to U with being connected power supply, UH control Q1 closes, and UL control Q2 opens; Time unsettled to U phase, UH control Q1 closes, and UL control Q2 closes; Described brushless electric machine is made up of stators and rotators, and stator is that coil windings is fixedly connected with U, V, W three-phase and forms loop with motor housing, and rotor is made up of permanent magnet; In motor, form magnetic field by powering to U, V, W, constantly change magnetic direction, rotor will rotate under the influence of a magnetic field; The position being detected magnet by Hall element controls motor with control motor U, V, W three-phase voltage; Suppose that current motor positions is position 1, target location is position 2, then directly control when motor is in position 1 to open Q1, Q3, Q6, and close Q2, Q4, Q5, make U phase produce forward magnetic field with V phase, W phase produces opposing magnetic field, and its vector is oriented to position 1; Reduce V phase voltage subsequently, make its magnetic vector and be partial to position 2 from position 1; When voltage is reduced to 0, magnetic vector is middle with position 2 with sensing position 1; Close Q3 and also open Q4, voltage progressively increases, and makes V phase occur opposing magnetic field, now magnetic vector and again rotating to position 2 from centre position; When V phase voltage is increased to identical with W phase, magnetic field makes electric machine rotation to position 2.
Advantage of the present invention is:
1. driving torque is large, effectively can improve control precision;
2. rotate noise little;
3. the slow-speed of revolution is adjustable, effectively reduces the impact to deceleration device, increases the service life.
The minimum speed of brushless electric machine to be turned by hundreds of with the method for similar Design of Stepper Motor Subdivision in two or three commutation modes (normally two or two commutations) drop to several turns by controlling motor by the present invention, and in the process slowly run, still keep high-power high pulling torque to export.
Accompanying drawing explanation
Below in conjunction with embodiment accompanying drawing, the invention will be further described:
Fig. 1 is embodiment of the present invention control circui schematic diagram;
Fig. 2 to Fig. 6 is the high-power control mode of low speed;
Fig. 7 is gearshift control flow chart.
Embodiment
As shown in Figure 1, the low speed that brshless DC motor is used for automobile gear shift is high-power, and it is characterized in that: comprise drive circuit and brushless electric machine, brushless electric machine is connected on housing, and the output shaft of DC brushless motor is connected with mechanical reduction gear; Magnet is inlaid in the axle head of sensing shaft, and linear hall sensor (for detecting the position of selector fork) is arranged on the position corresponding with magnet; Mechanical reduction gear output shaft connects automobile gearshift mechanism, wherein, drive circuit: comprise Q1, Q2, Q3, Q4, Q5, Q6 totally 6 MOSFET, Q1, Q3, Q5 are upper arm, just connect power supply, Q2, Q4, Q6 are underarm, connect power supply ground, UH, UL, VH, VL, WH, WL connect MCU, are used for the conducting of control 6 MOSFET or shutoff; The output of UH and UL control U phase, open to the U power supply timing UH control Q1 that is connected, UL control Q2 closes; During to U with being connected power supply, UH control Q1 closes, and UL control Q2 opens; Time unsettled to U phase, UH control Q1 closes, and UL control Q2 closes; Described brushless electric machine: motor is made up of stators and rotators, stator is that coil windings is fixedly connected with U, V, W three-phase and forms loop with motor housing, and rotor is made up of permanent magnet; In motor, form magnetic field by powering to U, V, W, constantly change magnetic direction, rotor will rotate under the influence of a magnetic field; The position being detected magnet by Hall element controls motor with control motor U, V, W three-phase voltage.
As shown in Figure 2, suppose that current motor positions is position 1, target location is position 2, then directly control when motor is in position 1 to open Q1, Q3, Q6, close Q2, Q4, Q5, make U phase produce forward magnetic field with V phase, W phase produces opposing magnetic field, and its vector is oriented to position 1.As shown in Figure 3, reduce V phase voltage, make its magnetic vector and be partial to position 2 from position 1.When voltage is reduced to 0, as shown in Figure 4, magnetic vector is middle with position 2 with sensing position 1.As shown in Figure 5, close Q3 and also open Q4, voltage progressively increases, and makes V phase occur opposing magnetic field, now magnetic vector and again rotating to position 2 from centre position.Begin when V phase voltage is increased to identical with W phase to make electric machine rotation to position 2 to magnetic field as shown in Figure 6.
As shown in Figure 7, gearshift control flow is:
1. power on;
2. detect host computer instruction;
3. do not receive instruction and return the 2nd step, receive and enter next step;
4. determine control strategy according to command content, configuration relevant parameter controls motor;
5. read reducing gear linear hall sensor value;
6. current location information is uploaded to host computer;
7., if arrived the position of command request, entered next step, otherwise return the 4th step continue control motor command complete, control motor stop and returning the 2nd step.
Claims (1)
1. brshless DC motor is high-power for the low speed of automobile gear shift, and it is characterized in that: comprise drive circuit and brushless electric machine, brushless electric machine is connected on housing, and the output shaft of DC brushless motor is connected with mechanical reduction gear; Magnet is inlaid in the axle head of sensing shaft, and linear hall sensor is for detecting the position of selector fork, and linear hall sensor is arranged on the position corresponding with magnet; Mechanical reduction gear output shaft connects automobile gearshift mechanism, wherein, drive circuit: comprise Q1, Q2, Q3, Q4, Q5, Q6 totally 6 MOSFET, Q1, Q3, Q5 are upper arm, just connect power supply, Q2, Q4, Q6 are underarm, connect power supply ground, UH, UL, VH, VL, WH, WL connect MCU, are used for the conducting of control 6 MOSFET or shutoff; The output of UH and UL control U phase, open to the U power supply timing UH control Q1 that is connected, UL control Q2 closes; During to U with being connected power supply, UH control Q1 closes, and UL control Q2 opens; Time unsettled to U phase, UH control Q1 closes, and UL control Q2 closes; Described brushless electric machine is made up of stators and rotators, and stator is that coil windings is fixedly connected with U, V, W three-phase and forms loop with motor housing, and rotor is made up of permanent magnet; In motor, form magnetic field by powering to U, V, W, constantly change magnetic direction, rotor will rotate under the influence of a magnetic field; The position being detected magnet by Hall element controls motor with control motor U, V, W three-phase voltage; Suppose that current motor positions is position 1, target location is position 2, then directly control when motor is in position 1 to open Q1, Q3, Q6, and close Q2, Q4, Q5, make U phase produce forward magnetic field with V phase, W phase produces opposing magnetic field, and its vector is oriented to position 1; Reduce V phase voltage subsequently, make its magnetic vector and be partial to position 2 from position 1; When voltage is reduced to 0, magnetic vector is middle with position 2 with sensing position 1; Close Q3 and also open Q4, voltage progressively increases, and makes V phase occur opposing magnetic field, now magnetic vector and again rotating to position 2 from centre position; When V phase voltage is increased to identical with W phase, magnetic field makes electric machine rotation to position 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310600644.XA CN104660116A (en) | 2013-11-25 | 2013-11-25 | Brushless direct-current motor for low speed and high power of automobile gearshift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310600644.XA CN104660116A (en) | 2013-11-25 | 2013-11-25 | Brushless direct-current motor for low speed and high power of automobile gearshift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104660116A true CN104660116A (en) | 2015-05-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310600644.XA Pending CN104660116A (en) | 2013-11-25 | 2013-11-25 | Brushless direct-current motor for low speed and high power of automobile gearshift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104660116A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883858A (en) * | 2019-03-08 | 2019-06-14 | 颜士伟 | A kind of Hopkinson pressure bar test device of magnetic drive |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1499008A2 (en) * | 2003-07-17 | 2005-01-19 | ebm-papst Mulfingen GmbH & Co.KG | Method and control system for electronic commutation of brushless DC motors |
| CN101892912A (en) * | 2010-08-06 | 2010-11-24 | 南京奥联汽车电子电器有限公司 | Non-contact electronic throttle |
| CN201733175U (en) * | 2010-06-18 | 2011-02-02 | 珠海市蓝海节能科技有限公司 | Power-operated clutch executive device of electric machine |
| CN102678850A (en) * | 2012-05-04 | 2012-09-19 | 安玉森 | Two-gear automatic gearbox for automobiles |
-
2013
- 2013-11-25 CN CN201310600644.XA patent/CN104660116A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1499008A2 (en) * | 2003-07-17 | 2005-01-19 | ebm-papst Mulfingen GmbH & Co.KG | Method and control system for electronic commutation of brushless DC motors |
| CN201733175U (en) * | 2010-06-18 | 2011-02-02 | 珠海市蓝海节能科技有限公司 | Power-operated clutch executive device of electric machine |
| CN101892912A (en) * | 2010-08-06 | 2010-11-24 | 南京奥联汽车电子电器有限公司 | Non-contact electronic throttle |
| CN102678850A (en) * | 2012-05-04 | 2012-09-19 | 安玉森 | Two-gear automatic gearbox for automobiles |
Non-Patent Citations (1)
| Title |
|---|
| 姜卫东: "混合动力电动汽车用无刷直流电机动态性能及控制策略的研究", 《中国博士学位论文全文数据库（电子期刊）》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883858A (en) * | 2019-03-08 | 2019-06-14 | 颜士伟 | A kind of Hopkinson pressure bar test device of magnetic drive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150527 |
|
| RJ01 | Rejection of invention patent application after publication |