CN104660125A - Brushless direct-current motor for single-step motion of automobile gear selector - Google Patents
Brushless direct-current motor for single-step motion of automobile gear selector Download PDFInfo
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- CN104660125A CN104660125A CN201310600571.4A CN201310600571A CN104660125A CN 104660125 A CN104660125 A CN 104660125A CN 201310600571 A CN201310600571 A CN 201310600571A CN 104660125 A CN104660125 A CN 104660125A
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Abstract
The invention relates to a brushless direct-current motor for single-step motion of an automobile gear selector. The brushless direct-current motor comprises a driving circuit and a brushless motor, and is characterized in that the brushless motor consists of a stator and a rotor, the stator is a coil winding, the U, V and W phases of the stator are fixedly connected with the shell of the motor to form a circuit, and the rotor consists of a permanent magnet; a magnetic field is formed in the motor by supplying power for the U, V and W phases, the direction of the magnetic field constantly changes, and the rotor can rotate under the effect of the magnetic field; the position of the magnet is detected and the voltages of the U, V and W phases of the motor are controlled through the Hall sensor so as to control single-step rotation of the motor; the motor rotates in a single step, and works in a three-phase self-locking mode or a two-phase self-locking mode. The brushless direct-current motor has the advantages of high precision, adjustable torque and convenience in control.
Description
Technical field
The present invention relates to the single step campaign that a kind of automobile gear selecting technology, particularly brshless DC motor are used for automobile gear selecting.
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 gear selecting, 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.
Traditional brushless direct current motor driver only achieves the simply motion such as rotating forward, reversion, braking of motor, and single step campaign is the characteristic of stepping motor, is just difficult to adaptation for needing the occasion using brshless DC motor to do accurately to control.
The design realizes the thick single step motion mode of similar stepping motor according to the progression of motor, an often motion single step, motor rotates an angle (such as: each single step of 4 progression motors is exactly 30 degree), and the position of motor is determined by the value of reading 3 phase Hall switch quantity sensor.
Summary of the invention
The object of this invention is to provide the single step campaign of a kind of brshless DC motor for automobile gear selecting.
The object of the present invention is achieved like this, and brshless DC motor is used for the single step campaign of automobile gear selecting, and 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 gear selecting shift fork, and linear hall sensor is arranged on the position corresponding with magnet, mechanical reduction gear output shaft connects automobile gear selection mechanism, it is characterized in that: brushless electric machine: motor 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, detect the position of magnet by Hall element and control motor U, V, W three-phase voltage, motor single step is rotated, described motor single step is rotated, by three-phase self-locking work or two-phase self-locking work, wherein, drive circuit: totally 6 MOSFET, Q1, Q3, Q5 are upper arm to comprise Q1, Q2, Q3, Q4, Q5, Q6, just connect power supply, Q2, Q4, Q6 are underarm, and when being worked by three-phase self-locking, motor U, V, W three-phase works simultaneously, two-phase opens upper arm or underarm, and one opens underarm or upper arm mutually, by opening Q1, Q3, Q5 and closedown Q2, Q4, Q6 control U+ and V+ just switches on power, W+ with switching on power, such U+ to U-is upper produces forward magnetic field, V+ to V-is upper produces forward magnetic field, W+ to W-produces opposing magnetic field, final magnetic direction is three-phase vector, in so changeless magnetic field, it is motionless that epitrochanterian permanent magnet is subject to the position that magnetic fields can keep fixing, if rotate under external force but motor Hall value is constant time this magnetic field can form resistance to external force, the rear rotor of external force disappearance also can return to the position before rotation, when rotation under External Force Acting makes motor Hall value change, chip can be changed magnetic direction and continue to form resistance to external force to adapt to new position by the conducting state controlling three-phase, described motor single step is rotated, and worked by two-phase self-locking, the two-phase in each motor U, V, W works simultaneously, controls only to open two-phase, and its resultant direction determines magnetic direction.
Advantage of the present invention is:
1. precision is high, improves control precision;
2. moment of torsion is adjustable, is convenient to control.
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 and Fig. 3 is one-step control process schematic;
Fig. 3 is two-phase self-locking manner;
Fig. 4 is embodiment of the present invention sequential chart.
Fig. 5 is gear selecting device control flow chart.
Embodiment
As shown in Figure 1, brshless DC motor is used for the single step campaign of automobile gear selecting, and 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 gear selecting shift fork, and linear hall sensor is arranged on the position corresponding with magnet, mechanical reduction gear output shaft connects automobile gear selection mechanism, it is characterized in that: brushless electric machine: motor 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, detect the position of magnet by Hall element and control motor U, V, W three-phase voltage, motor single step is rotated, drive circuit: comprise Q1, Q2, Q3, Q4, Q5, Q6 totally 6 MOSFET, Q1, Q3, Q5 be upper arm, connect power supply just, 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, detect the position of magnet by Hall element and control motor U, V, W three-phase voltage, making motor self-locking, described motor single step is rotated, and by three-phase self-locking work or two-phase self-locking work, wherein, when being worked by three-phase self-locking, motor U, V, W three-phase works simultaneously, and two-phase opens upper arm or underarm, and one opens underarm or upper arm mutually, by opening Q1, Q3, Q5 and closedown Q2, Q4, Q6 control U+ and V+ just switches on power, W+ with switching on power, such U+ to U-is upper produces forward magnetic field, V+ to V-is upper produces forward magnetic field, W+ to W-produces opposing magnetic field, final magnetic direction is three-phase vector, in so changeless magnetic field, it is motionless that epitrochanterian permanent magnet is subject to the position that magnetic fields can keep fixing, if rotate under external force but motor Hall value is constant time this magnetic field can form resistance to external force, the rear rotor of external force disappearance also can return to the position before rotation, when rotation under External Force Acting makes motor Hall value change, chip can be changed magnetic direction and continue to form resistance to external force to adapt to new position by the conducting state controlling three-phase, described motor single step is rotated, and worked by two-phase self-locking, the two-phase in each motor U, V, W works simultaneously, controls only to open two-phase, and its resultant direction determines magnetic direction.
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, Q5, close Q2, Q4, Q6, make U phase produce forward magnetic field, V with W phase produces opposing magnetic field, its vector is oriented to position 2, and magnetic field makes electric machine rotation to position 2 as shown in Figure 3.
Fig. 4 a and Fig. 4 b is that the control of 6 MOSFET Q1 ~ Q6 opens and closes sequential chart.
As shown in Figure 5, gear selecting device 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.
The parts that the present embodiment does not describe in detail and structure belong to the well-known components of the industry and common structure or conventional means, do not describe one by one here.
Claims (1)
1. brshless DC motor is used for the single step campaign of automobile gear selecting, and 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 gear selecting shift fork, and linear hall sensor is arranged on the position corresponding with magnet, mechanical reduction gear output shaft connects automobile gear selection mechanism, it is characterized in that: brushless electric machine: motor 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, detect the position of magnet by Hall element and control motor U, V, W three-phase voltage, motor single step is rotated, described motor single step is rotated, by three-phase self-locking work or two-phase self-locking work, wherein, drive circuit: totally 6 MOSFET, Q1, Q3, Q5 are upper arm to comprise Q1, Q2, Q3, Q4, Q5, Q6, just connect power supply, Q2, Q4, Q6 are underarm, and when being worked by three-phase self-locking, motor U, V, W three-phase works simultaneously, two-phase opens upper arm or underarm, and one opens underarm or upper arm mutually, by opening Q1, Q3, Q5 and closedown Q2, Q4, Q6 control U+ and V+ just switches on power, W+ with switching on power, such U+ to U-is upper produces forward magnetic field, V+ to V-is upper produces forward magnetic field, W+ to W-produces opposing magnetic field, final magnetic direction is three-phase vector, in so changeless magnetic field, it is motionless that epitrochanterian permanent magnet is subject to the position that magnetic fields can keep fixing, if rotate under external force but motor Hall value is constant time this magnetic field can form resistance to external force, the rear rotor of external force disappearance also can return to the position before rotation, when rotation under External Force Acting makes motor Hall value change, chip can be changed magnetic direction and continue to form resistance to external force to adapt to new position by the conducting state controlling three-phase, described motor single step is rotated, and worked by two-phase self-locking, the two-phase in each motor U, V, W works simultaneously, controls only to open two-phase, and its resultant direction determines magnetic direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310600571.4A CN104660125A (en) | 2013-11-25 | 2013-11-25 | Brushless direct-current motor for single-step motion of automobile gear selector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310600571.4A CN104660125A (en) | 2013-11-25 | 2013-11-25 | Brushless direct-current motor for single-step motion of automobile gear selector |
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| CN104660125A true CN104660125A (en) | 2015-05-27 |
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| CN201310600571.4A Pending CN104660125A (en) | 2013-11-25 | 2013-11-25 | Brushless direct-current motor for single-step motion of automobile gear selector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107343833A (en) * | 2017-06-27 | 2017-11-14 | 上海互邦智能康复设备股份有限公司 | The brake method and driving and braking circuit of a kind of electric wheelchair using brushless electric machine driving |
| CN111408053A (en) * | 2020-04-17 | 2020-07-14 | 刘建平 | Dynamic and static magnetic field gyromagnetic machine and jade conjoined body |
| CN111512074A (en) * | 2017-12-27 | 2020-08-07 | 株式会社电装 | Shift gear control device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07284288A (en) * | 1994-04-05 | 1995-10-27 | Hitachi Ltd | Motor speed control circuit |
| CN101373944A (en) * | 2008-06-25 | 2009-02-25 | 何伟斌 | Driver for brushless DC motor |
| CN102545741A (en) * | 2012-02-07 | 2012-07-04 | 深圳市捷顺科技实业股份有限公司 | Brushless direct-current motor drive circuit, channel gate and control method |
| CN103066919A (en) * | 2012-12-29 | 2013-04-24 | 芜湖伯特利汽车安全系统有限公司 | Motor drive circuit for automated mechanical transmission (AMT) controller |
-
2013
- 2013-11-25 CN CN201310600571.4A patent/CN104660125A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07284288A (en) * | 1994-04-05 | 1995-10-27 | Hitachi Ltd | Motor speed control circuit |
| CN101373944A (en) * | 2008-06-25 | 2009-02-25 | 何伟斌 | Driver for brushless DC motor |
| CN102545741A (en) * | 2012-02-07 | 2012-07-04 | 深圳市捷顺科技实业股份有限公司 | Brushless direct-current motor drive circuit, channel gate and control method |
| CN103066919A (en) * | 2012-12-29 | 2013-04-24 | 芜湖伯特利汽车安全系统有限公司 | Motor drive circuit for automated mechanical transmission (AMT) controller |
Non-Patent Citations (1)
| Title |
|---|
| 王伟华等: "车辆机械式自动变速器控制系统的研制", 《工业仪表与自动化装置》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107343833A (en) * | 2017-06-27 | 2017-11-14 | 上海互邦智能康复设备股份有限公司 | The brake method and driving and braking circuit of a kind of electric wheelchair using brushless electric machine driving |
| CN111512074A (en) * | 2017-12-27 | 2020-08-07 | 株式会社电装 | Shift gear control device |
| CN111512074B (en) * | 2017-12-27 | 2021-06-25 | 株式会社电装 | Shift gear control device |
| CN111408053A (en) * | 2020-04-17 | 2020-07-14 | 刘建平 | Dynamic and static magnetic field gyromagnetic machine and jade conjoined body |
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Application publication date: 20150527 |