CN104660122A - Brushless direct-current motor for single-step motion of automobile throttle valve - Google Patents
Brushless direct-current motor for single-step motion of automobile throttle valve Download PDFInfo
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- CN104660122A CN104660122A CN201310600873.1A CN201310600873A CN104660122A CN 104660122 A CN104660122 A CN 104660122A CN 201310600873 A CN201310600873 A CN 201310600873A CN 104660122 A CN104660122 A CN 104660122A
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Abstract
The invention relates to a brushless direct-current motor for single-step motion of an automobile throttle valve. 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 the throttle valve, 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 throttle valve mechanism. The flow path comprises the following steps: 1, powering on; 2, detecting the command of an upper computer; 3, returning to the step 2 if the command is not received, and entering the next step if the command is received; 4, determining a control strategy according to the content of the command, and configuring relevant parameters to control the motor; 5, reading the value of the linear Hall sensor of the speed reducing mechanism; 6, uploading the current position information to the upper computer; 7, entering the next step if the position required by the command is reached, or returning to the step 4 to continuously control the command of the motor to be completed, controlling the motor to stop and returning to the step 2.
Description
Technical field
The present invention relates to the single step campaign that a kind of air throttle of car technology, particularly brshless DC motor are used for air throttle of car.
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 accelerator drawing respectively exactly, thus controls throttle opening and closing by certain mechanical device-reducing gear.The feature of Throttle Opening Control, for requiring can complete within a certain period of time arbitrary aperture change within the scope of 0 ~ 100% accelerator open degree, is followed the tracks of accelerator travel at normal driving cycle, is completed driver and be intended to the control of engine; Air throttle device is coordinated to realize refueling during starting; The receipts oil and oiling work that need due to power interruption and recovery is completed during gear shift.In mechanical trip control technology, step motion control and high pulling torque are carried out accurately from lock control technology to brushless DC motor.It is characterized in that single-chip microcomputer is by software control motor winding, polarity of voltage and voltage swing, control motor and run step number, speed and direction of rotation.
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 air throttle of car.
The object of the present invention is achieved like this, and brshless DC motor is used for the single step campaign of air throttle of car, 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 air throttle, and linear hall sensor is arranged on the position corresponding with magnet 6; Mechanical reduction gear output shaft connects air throttle of car 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; 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, and be twice three-phase self-locking state, motor U, V, W three-phase works simultaneously, and two-phase opens pipe or lower pipe, and one opens lower pipe or upper pipe mutually, by opening Q1, Q3, Q6 and closedown Q2, Q4, Q5 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, then Q1 is opened, Q4, Q6 and closedown Q2, Q3, Q5 control U+ just switches on power, V+ and W+ with switching on power, such U+ to U-is upper produces forward magnetic field, V+ to V-produces opposing magnetic field, W+ to W-also produces opposing magnetic field, rotor turns on current magnetic field direction under new magnetic fields, current magnetic field direction and a upper magnetic direction have angle, namely a single step rotates this angle, so far complete single step to rotate.
Described motor single step is rotated, and motor adopts two-phase self-locking, and the two-phase in each motor U, V, W works simultaneously, and control only to open two-phase, 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 throttle valve device control flow chart.
Embodiment
As shown in Figure 1, brshless DC motor is used for the single step campaign of air throttle of car, 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 air throttle) is arranged on the position corresponding with magnet 6; Mechanical reduction gear output shaft connects air throttle of car 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; Detect the position of magnet by Hall element and control motor U, V, W three-phase voltage, making electric machine rotation.
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, Q4, Q6, close Q2, Q3, Q5, 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.
As shown in Figure 4, motor single step is rotated, and be twice three-phase self-locking state, motor U, V, W three-phase works simultaneously, and two-phase opens pipe or lower pipe, and one opens lower pipe or upper pipe mutually, by opening Q1, Q3, Q6 and closedown Q2, Q4, Q5 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, then Q1 is opened, Q4, Q6 and closedown Q2, Q3, Q5 control U+ just switches on power, V+ and W+ with switching on power, such U+ to U-is upper produces forward magnetic field, V+ to V-produces opposing magnetic field, W+ to W-also produces opposing magnetic field, rotor turns on current magnetic field direction under new magnetic fields, current magnetic field direction and a upper magnetic direction have angle, namely a single step rotates this angle, so far complete single step to rotate.
Described motor self-locking is two-phase self-locking, and 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 5, throttle valve 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.
Claims (2)
1. brshless DC motor is used for the single step campaign of air throttle of car, 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 air throttle, and linear hall sensor is arranged on the position corresponding with magnet; Mechanical reduction gear output shaft connects air throttle of car 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; Detect the position of magnet by Hall element and control motor U, V, W three-phase voltage, making the single step campaign of air throttle of car.
2. brshless DC motor according to claim 1 is used for the single step campaign of air throttle of car, it is characterized in that: the single step motion control flow process of air throttle of car 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310600873.1A CN104660122A (en) | 2013-11-25 | 2013-11-25 | Brushless direct-current motor for single-step motion of automobile throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310600873.1A CN104660122A (en) | 2013-11-25 | 2013-11-25 | Brushless direct-current motor for single-step motion of automobile throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104660122A true CN104660122A (en) | 2015-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310600873.1A Pending CN104660122A (en) | 2013-11-25 | 2013-11-25 | Brushless direct-current motor for single-step motion of automobile throttle valve |
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| CN (1) | CN104660122A (en) |
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 CN201310600873.1A patent/CN104660122A/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 |
|---|
| 汪伟华: "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》 * |
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Application publication date: 20150527 |