CN103895530A - Speed limiting strategy of vehicle-mounted motor control system - Google Patents
Speed limiting strategy of vehicle-mounted motor control system Download PDFInfo
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- CN103895530A CN103895530A CN201210575542.2A CN201210575542A CN103895530A CN 103895530 A CN103895530 A CN 103895530A CN 201210575542 A CN201210575542 A CN 201210575542A CN 103895530 A CN103895530 A CN 103895530A
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- motor
- control system
- speed
- electric machine
- machine control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
The invention discloses a speed limiting strategy of a vehicle-mounted motor control system. According to an external characteristic curve of a motor, the rotation speed of the motor when a vehicle runs is no larger than N, a rotation speed point N1 and a rotation speed point N2 of the motor are selected, and N1 is smaller than N2, and N2 is smaller than N; output torque of a drive motor in the motor control system is set to be Tout, the motor control system reads current motor rotation speed n and a torque requirement Tref, when n is larger than N2, Tout is set to be zero, when n is smaller than N2, the motor control system judges n and N1, when n is smaller than N1, Tout is set to be equal to Tref, and when n is larger than N1, Tout is set to be equal to Tout(k-1), wherein Tout(k-1) is previous output torque of the drive motor; smoothing is carried out on the output torque Tout of the drive motor through the motor control system, and the processed output torque Tout is output to the motor. By means of the speed limiting strategy, the maximum rotation speed of the motor can be effectively limited, vibration of the vehicle is avoided when the motor slows down, and the requirements for running safety and the comfort degree of a passenger car are met to the largest extent.
Description
Technical field
The present invention relates to a kind of speed limit strategy of vehicle-mounted electric machine control system.
Background technology
Vehicle-mounted electric machine control system need to meet car load demand for control conventionally, especially new-energy automobile adopts permagnetic synchronous motor traction drive mostly, for support vehicles traffic safety, need to limit the maximum speed of revolution of motor, conventionally adopt direct limiting motor total external characteristics output torque to carry out speed limit, but during due to motor maximum speed of revolution, the speed of a motor vehicle is very fast, when easily causing vehicle body during with restrictive curve point of crossing at level and smooth full-throttle characteristics, shakes by motor, affect traffic safety and do not meet the comfortable application requirements of manned vehicle, and under different road conditions, tractive performance and the traveling comfort of car load have some limitations.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of speed limit strategy of vehicle-mounted electric machine control system, this speed limit strategy is limiting motor maximum speed of revolution effectively, the shake of vehicle while avoiding decelerating through motor, at utmost meets traffic safety and the traveling comfort requirement of manned vehicle.
For solving the problems of the technologies described above, the speed limit strategy of the vehicle-mounted electric machine control system of the present invention comprises the steps:
The output torque of step 2, setting electric machine control system drive motor is T
out, electric machine control system reads current motor speed n and torque-demand T
ref, as n > N
2time, set T
out=0, as n < N
2time, electric machine control system judges n and N
1, as n < N
1time, set T
out=T
ref, as n > N
1time, set T
out=T
out(k-1), wherein: T
out(k-1)for the output torque of a front drive motor;
Step 3, the output torque T of electric machine control system to drive motor
outdo the backward motor output of smoothing processing.
Further, above-mentioned output torque T
outsmoothing processing read moment step-length C and the torque-demand T of motor by electric machine control system
ref, work as T
ref-T
out(k-1)when > C, T
out=T
out(k-1)+ C, works as T
ref-T
out(k-1)when < C, T
out=T
out(k-1)-C, and T
ref-T
out(k-1)when=± C, T
out=T
ref.
Because the speed limit strategy of the vehicle-mounted electric machine control system of the present invention has adopted technique scheme, this speed limit strategy is according to motor full-throttle characteristics, sets the car load middle motor speed that travels and is no more than N, chooses respectively motor speed point N
1and N
2, and N
1<N
2<N; The output torque of setting electric machine control system drive motor is T
out, electric machine control system reads current motor speed n and torque-demand T
ref, as n > N
2time, set T
out=0, as n < N
2time, electric machine control system judges n and N
1, as n < N
1time, set T
out=T
ref, as n > N
1time, set T
out=T
out(k-1), wherein: T
out(k-1)for the output torque of a front drive motor; The output torque T of electric machine control system to drive motor
outdo the backward motor output of smoothing processing.This speed limit strategy is limiting motor maximum speed of revolution effectively, and the shake of vehicle while avoiding decelerating through motor at utmost meets traffic safety and the traveling comfort requirement of manned vehicle.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is described in further detail:
Fig. 1 is the vehicle-mounted motor full-throttle characteristics figure of this speed limit strategy
Fig. 2 is the FB(flow block) of the speed limit strategy of the vehicle-mounted electric machine control system of the present invention;
Fig. 3 exports torque T in this speed limit strategy
outthe FB(flow block) of smoothing processing;
Fig. 4 is the speed limit test pattern of the speed of a motor vehicle after this speed limit of employing strategy.
The specific embodiment
As depicted in figs. 1 and 2, the speed limit strategy of the vehicle-mounted electric machine control system of the present invention comprises the steps:
The output torque of step 2, setting electric machine control system drive motor is T
out, electric machine control system reads current motor speed n and torque-demand T
ref, as n > N
2time, set T
out=0, as n < N
2time, electric machine control system judges n and N
1, as n < N
1time, set T
out=T
ref, as n > N
1time, set T
out=T
out(k-1), wherein: T
out(k-1)for the output torque of a front drive motor;
Step 3, the output torque T of electric machine control system to drive motor
outdo the backward motor output of smoothing processing.
Further, as shown in Figure 3, above-mentioned output torque T
outsmoothing processing read moment step-length C and the torque-demand T of motor by electric machine control system
ref, work as T
ref-T
out(k-1)when > C, T
out=T
out(k-1)+ C, works as T
ref-T
out(k-1)when < C, T
out=T
out(k-1)-C, and T
ref-T
out(k-1)when=± C, T
out=T
ref.
As shown in Figure 4, the speed of a motor vehicle being tested after adopting this speed limit strategy, is verification the verifying results, sets the speed of a motor vehicle and is no more than 20km/h, and after configuration relevant parameter, maximum speed can be defined as 18km/h.
This speed limit strategy can be applicable to the application scenarios such as entire new energy automobile system development, checking, power system performance test, can effectively prevent overspeed of vehicle, reduces moment shake, the parameter of speed limit strategy is configured to the speed limit demand that can realize different vehicle.
Claims (2)
1. a speed limit strategy for vehicle-mounted electric machine control system, is characterized in that this speed limit strategy comprises the steps:
Step 1, according to motor full-throttle characteristics, set the car load middle motor speed that travels and be no more than N, choose respectively motor speed point N
1and N
2, and N
1<N
2<N, when motor speed increases and exceedes rotational speed N gradually from 0
2time, motor full-throttle characteristics is through rotational speed N from initial point
2to rotational speed N, when motor speed diminishes gradually and is less than rotational speed N from rotational speed N
1time, motor full-throttle characteristics is through rotational speed N from rotational speed N
2, rotational speed N
1after get back to initial point;
The output torque of step 2, setting electric machine control system drive motor is T
out, electric machine control system reads current motor speed n and torque-demand T
ref, as n > N
2time, set T
out=0, as n < N
2time, electric machine control system judges n and N
1, as n < N
1time, set T
out=T
ref, as n > N
1time, set T
out=T
out(k-1), wherein: T
out(k-1)for the output torque of a front drive motor;
Step 3, the output torque T of electric machine control system to drive motor
outdo the backward motor output of smoothing processing.
2. the speed limit strategy of vehicle-mounted electric machine control system according to claim 1, is characterized in that: described output torque T
outsmoothing processing read moment step-length C and the torque-demand T of motor by electric machine control system
ref, work as T
ref-T
out(k-1)when > C, T
out=T
out(k-1)+ C, works as T
ref-T
out(k-1)when < C, T
out=T
out(k-1)-C, and T
ref-T
out(k-1)when=± C, T
out=T
ref.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210575542.2A CN103895530A (en) | 2012-12-27 | 2012-12-27 | Speed limiting strategy of vehicle-mounted motor control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210575542.2A CN103895530A (en) | 2012-12-27 | 2012-12-27 | Speed limiting strategy of vehicle-mounted motor control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103895530A true CN103895530A (en) | 2014-07-02 |
Family
ID=50987230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210575542.2A Pending CN103895530A (en) | 2012-12-27 | 2012-12-27 | Speed limiting strategy of vehicle-mounted motor control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103895530A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442447A (en) * | 2014-12-08 | 2015-03-25 | 沈阳工业大学 | High speed limit control method of motor drive controller for electrical vehicle |
| CN106740268A (en) * | 2017-02-10 | 2017-05-31 | 成都雅骏新能源汽车科技股份有限公司 | A kind of pure electric automobile max. speed method for limiting speed |
| CN107031452A (en) * | 2016-11-23 | 2017-08-11 | 北京新能源汽车股份有限公司 | A kind of motor control method and device |
| CN112977086A (en) * | 2021-03-04 | 2021-06-18 | 凯博易控车辆科技(苏州)股份有限公司 | Speed-limiting anti-shake control system and control method for electric vehicle |
Citations (6)
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|---|---|---|---|---|
| JPH05219602A (en) * | 1992-02-07 | 1993-08-27 | Toyota Autom Loom Works Ltd | Control method of motor for motor vehicle |
| JPH06225402A (en) * | 1993-01-21 | 1994-08-12 | Toyota Motor Corp | Controller for electric motor vehicle |
| US5757161A (en) * | 1994-12-01 | 1998-05-26 | Matsushita Electric Industrial Co., Ltd. | Apparatus and method for limiting the speed of an electric motor |
| US6313592B1 (en) * | 1998-05-09 | 2001-11-06 | Zf Friedrichshafen Ag | Method for controlling a motor vehicle having an electric drive mechanism |
| CN101259845A (en) * | 2007-12-05 | 2008-09-10 | 奇瑞汽车股份有限公司 | Mixed power motor torsional moment smoothness processing controlling system |
| CN102431554A (en) * | 2010-09-29 | 2012-05-02 | 比亚迪股份有限公司 | Electromobile cruising control system and control method thereof |
-
2012
- 2012-12-27 CN CN201210575542.2A patent/CN103895530A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05219602A (en) * | 1992-02-07 | 1993-08-27 | Toyota Autom Loom Works Ltd | Control method of motor for motor vehicle |
| JPH06225402A (en) * | 1993-01-21 | 1994-08-12 | Toyota Motor Corp | Controller for electric motor vehicle |
| US5757161A (en) * | 1994-12-01 | 1998-05-26 | Matsushita Electric Industrial Co., Ltd. | Apparatus and method for limiting the speed of an electric motor |
| US6313592B1 (en) * | 1998-05-09 | 2001-11-06 | Zf Friedrichshafen Ag | Method for controlling a motor vehicle having an electric drive mechanism |
| CN101259845A (en) * | 2007-12-05 | 2008-09-10 | 奇瑞汽车股份有限公司 | Mixed power motor torsional moment smoothness processing controlling system |
| CN102431554A (en) * | 2010-09-29 | 2012-05-02 | 比亚迪股份有限公司 | Electromobile cruising control system and control method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104442447A (en) * | 2014-12-08 | 2015-03-25 | 沈阳工业大学 | High speed limit control method of motor drive controller for electrical vehicle |
| CN107031452A (en) * | 2016-11-23 | 2017-08-11 | 北京新能源汽车股份有限公司 | A kind of motor control method and device |
| CN106740268A (en) * | 2017-02-10 | 2017-05-31 | 成都雅骏新能源汽车科技股份有限公司 | A kind of pure electric automobile max. speed method for limiting speed |
| CN112977086A (en) * | 2021-03-04 | 2021-06-18 | 凯博易控车辆科技(苏州)股份有限公司 | Speed-limiting anti-shake control system and control method for electric vehicle |
| CN112977086B (en) * | 2021-03-04 | 2022-06-24 | 凯博易控车辆科技(苏州)股份有限公司 | Electric vehicle speed-limiting anti-shake control system and control method thereof |
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Application publication date: 20140702 |