CN107444484A - A kind of motor turning power-assisted start-up and shut-down control method - Google Patents
A kind of motor turning power-assisted start-up and shut-down control method Download PDFInfo
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- CN107444484A CN107444484A CN201710626062.7A CN201710626062A CN107444484A CN 107444484 A CN107444484 A CN 107444484A CN 201710626062 A CN201710626062 A CN 201710626062A CN 107444484 A CN107444484 A CN 107444484A
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- motor turning
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The invention discloses a kind of motor turning power-assisted start-up and shut-down control method.Control process is：During normal vehicle operation, speed, engine speed and battery tension are detected in real time, before battery tension drops into and allows the minimum voltage of work less than EPS, when the speed of detection is less than setting value v1Engine speed is less than setting value n simultaneously1When, electric boosting steering system controls current power-assisted electric current in setting time t1Interior uniform descent is zero.The present invention is in engine start or stopping, by the threshold values for judging speed and engine speed, the slow reduction control of progress power-assisted before transient state is fallen is influenceed by battery tension in power-assisted electric current, realize that the flexibility of motor turning power-assisted is switched on and off, solve the problems, such as in driving engine accident extinguishing and cause during STT engine start and stop to turn to hired roughneck's sense, method is simple, effective, improves the comfort for driving vehicle.
Description
Technical field
The invention belongs to technical field of automobile control, and in particular to a kind of motor turning power-assisted start-up and shut-down control method.
Background technology
In order to meet more and more harsh automobile fuel consumption requirement, STT engines start stop system is as a kind of suitable city road
The energy-conserving and emission-cutting technology of condition, have become the standard configuration of most of new model.Due to the moment of engine start and stopping all
Vehicle battery tension can be had an impact, EPS (electric boosting steering system) is as a powerful customer on automobile
Part, the change of battery tension can directly affect the output of its booster torquemoment.And the STT systems of different manufacturers open in engine
All had differences in criterion that is dynamic and stopping management, in fact it could happen that the moment that engine is shut down, turn to also have action or
Steering acts.
Engine shut down or start when battery tension can be caused to fall or shake, when battery tension drop into it is low
When EPS allows the minimum voltage of work, EPS power-assisted can also be fallen moment, causes driver to be lost suddenly in steering and helps
Power, produce steering wheel hired roughneck sense；When battery tension, which returns to EPS, allows more than the minimum voltage of work and stabilization, such as
Now driver is turning to fruit, and EPS instantaneously becomes original place power-assisted state (power-assisted electric current is big compared with when having a speed) from non helping hand, can be right
Steering wheel produces moment impact, same to produce hired roughneck's sense.
The content of the invention
The purpose of the present invention is exactly insufficient existing for above-mentioned background technology in order to solve, there is provided a kind of motor turning power-assisted opens
Stop control method.
The technical solution adopted by the present invention is：A kind of motor turning power-assisted start-up and shut-down control method, normal vehicle operation process
In, speed, engine speed and battery tension are detected in real time, and dropped into battery tension allows work most less than EPS
Before low-voltage, when the speed of detection is less than setting value v1 while engine speed is less than setting value n1, electric power steering
It is zero that system, which controls current power-assisted electric current uniform descent in setting time t1,.
Further, it is additionally included in after starting engine, returning to EPS in battery tension allows the minimum voltage of work
Before, when the engine speed of detection of a certain moment is more than setting value n2, electric boosting steering system controls current power-assisted electricity
Stream is at the uniform velocity promoted to 100% in setting time t2.
Further, the value of the t1 is 0.1-5s.
Further, the value of the t2 is 0.1-3s.
This hair is in engine start or stopping, by judging the threshold values of speed and engine speed, power-assisted electric current by
Battery tension influences to carry out the slow reduction control of power-assisted before transient state is fallen, and realizes that the flexible of motor turning power-assisted is opened and closed
It is disconnected, solves the problems, such as to cause when engine accident extinguishing and STT engine start and stop in driving turning to hired roughneck's sense, method simply, have
Effect, improve the comfort for driving vehicle.
Brief description of the drawings
Fig. 1 is automobile electric booster steering system input and output block diagram of the present invention.
Fig. 2 is power steering start-up and shut-down control method schematic of the present invention.
Fig. 3 is power steering start-up and shut-down control method flow diagram of the present invention.
Embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings, is easy to that this hair is well understood
It is bright, but they do not form to the present invention and limited.
As shown in figure 1, electric boosting steering system (EPS) is received engine by CAN and controlled by storage battery power supply
The GES that the engine rotational speed signal and VSC that unit is sent are sent, gather the letter of steering wheel torque sensor
Number；Output driving current motor, power-assisted is carried out to the steering operation of driver.
As shown in Figure 2 and Figure 3, during vehicle normal operation, speed and engine speed are detected in real time, in electric power storage
Before cell voltage change, by speed and the characteristic value of engine speed, electric boosting steering system is exported in advance to power-assisted real
Apply " slowly reducing " and " slowly lifting " control.
It is less than setting value n1 when the speed of detection is less than setting value v1 (certain relatively low speed) while engine speed (certain is relatively low
Rotating speed) when, electric boosting steering system (EPS) thinks that engine is shut down, and coming into effect power-assisted slowly reduces control, i.e. EPS controls
Make current power-assisted electric current setting time t1 (for can scalar quantity, demarcated according to real vehicle power steering feel) interior uniform descent is
Zero, t1 value are 0.1-5s..So before engine restarting causes battery tension shake moment, power-assisted has been carried out delaying
Slow to reduce, driver will not experience the drastically change of steering wheel power-assisted.
After engine is started, when the engine speed of detection of a certain moment be more than setting value n2 (certain compared with the slow-speed of revolution, and n2
＞ n1) when, EPS thinks engine start, comes into effect power-assisted and slowly lifts control, be i.e. EPS controls current power-assisted electric current setting
Fix time t2 (for can scalar quantity, demarcated according to real vehicle power steering feel, and t1 can be not equal to t2) interior be at the uniform velocity promoted to
100% power-assisted, t2 value is 0.1-3s.Before battery tension recovers again, by the change of power-assisted feel and the action of engine
Associated so that driver's operating experience is natural.
The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (4)
- A kind of 1. motor turning power-assisted start-up and shut-down control method, it is characterised in that：During normal vehicle operation, car is detected in real time Speed, engine speed and battery tension, before battery tension drops into and allows the minimum voltage of work less than EPS, when The speed of detection is less than setting value v1, and when being less than setting value n1, electric boosting steering system is controlled and currently helped engine speed simultaneously Power electric current uniform descent in setting time t1 is zero.
- 2. motor turning power-assisted start-up and shut-down control method according to claim 1, it is characterised in that：Startup is additionally included in start After machine, returned in battery tension before EPS allows the minimum voltage of work, when a certain moment, the engine speed of detection is big When setting value n2, electric boosting steering system controls current power-assisted electric current to be at the uniform velocity promoted to 100% in setting time t2.
- 3. motor turning power-assisted start-up and shut-down control method according to claim 1, it is characterised in that：The value of the t1 is 0.1- 5s。
- 4. motor turning power-assisted start-up and shut-down control method according to claim 2, it is characterised in that：The value of the t2 is 0.1- 3s。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710626062.7A CN107444484B (en) | 2017-07-27 | 2017-07-27 | A kind of motor turning power-assisted start-up and shut-down control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710626062.7A CN107444484B (en) | 2017-07-27 | 2017-07-27 | A kind of motor turning power-assisted start-up and shut-down control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107444484A true CN107444484A (en) | 2017-12-08 |
| CN107444484B CN107444484B (en) | 2019-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710626062.7A Active CN107444484B (en) | 2017-07-27 | 2017-07-27 | A kind of motor turning power-assisted start-up and shut-down control method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103847788A (en) * | 2012-11-30 | 2014-06-11 | 株式会社万都 | Method for controlling stopping mode of motor-driven type power steering |
| CN104670305A (en) * | 2015-03-19 | 2015-06-03 | 安徽江淮汽车股份有限公司 | Electric power steering control method and control system for HEV (Hybrid Electric Vehicle) |
| CN105799702A (en) * | 2015-01-14 | 2016-07-27 | 福特全球技术公司 | Integration of stop-start and active front steering |
| CN106275060A (en) * | 2016-08-31 | 2017-01-04 | 天津市松正电动汽车技术股份有限公司 | A kind of power-assisted steering motor control method |
| CN106314531A (en) * | 2015-07-05 | 2017-01-11 | 深圳市沃特玛电池有限公司 | Energy-saving control method of electro-hydraulic power steering pump |
| US20170203747A1 (en) * | 2016-01-19 | 2017-07-20 | Ford Global Technologies, Llc | Active front steering current control for engine stop/start vehicles |
-
2017
- 2017-07-27 CN CN201710626062.7A patent/CN107444484B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103847788A (en) * | 2012-11-30 | 2014-06-11 | 株式会社万都 | Method for controlling stopping mode of motor-driven type power steering |
| CN105799702A (en) * | 2015-01-14 | 2016-07-27 | 福特全球技术公司 | Integration of stop-start and active front steering |
| CN104670305A (en) * | 2015-03-19 | 2015-06-03 | 安徽江淮汽车股份有限公司 | Electric power steering control method and control system for HEV (Hybrid Electric Vehicle) |
| CN106314531A (en) * | 2015-07-05 | 2017-01-11 | 深圳市沃特玛电池有限公司 | Energy-saving control method of electro-hydraulic power steering pump |
| US20170203747A1 (en) * | 2016-01-19 | 2017-07-20 | Ford Global Technologies, Llc | Active front steering current control for engine stop/start vehicles |
| CN107061027A (en) * | 2016-01-19 | 2017-08-18 | 福特全球技术公司 | The active front wheel steering current control for opening/stopping for engine |
| CN106275060A (en) * | 2016-08-31 | 2017-01-04 | 天津市松正电动汽车技术股份有限公司 | A kind of power-assisted steering motor control method |
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| Publication number | Publication date |
|---|---|
| CN107444484B (en) | 2019-09-24 |
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Address after: 430056 No. 1 Dongfeng Avenue, Wuhan economic and Technological Development Zone, Hubei, Wuhan Applicant after: dFac Address before: 430056 No. 1 Dongfeng Avenue, Wuhan economic and Technological Development Zone, Hubei, Wuhan Applicant before: Dongfeng Car Co. |