CN106891881A - Electric vehicle brake pedal failure emergency brake treating method - Google Patents
Electric vehicle brake pedal failure emergency brake treating method Download PDFInfo
- Publication number
- CN106891881A CN106891881A CN201710057208.0A CN201710057208A CN106891881A CN 106891881 A CN106891881 A CN 106891881A CN 201710057208 A CN201710057208 A CN 201710057208A CN 106891881 A CN106891881 A CN 106891881A
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- China
- Prior art keywords
- brake
- signal
- entire car
- car controller
- grades
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001514 detection method Methods 0.000 claims description 18
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000003672 processing method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005183 dynamical system Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/06—Disposition of pedal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18109—Braking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/18—Braking system
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Regulating Braking Force (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
A kind of electric vehicle brake pedal failure emergency brake treating method, including：Entire car controller detects brakes step, detects current vehicle speed step；Current gear state detecting step, state parameter includes D, P, R mode of operation；Efp detecting step, its advantage is：By entire car controller in the case of the brake system non-functional for judging electric motor car, judge that vehicle is presently in state after detecting gear, speed, and the output signal of conversion electron gas pedal, so that motor output opposing torque, so that electric motor car remains able to braking in the case of braking effect failure, vehicle is allowed to can continue to traveling to safety stop position to wait for rescue.
Description
Technical field
The present invention relates to electric vehicle engineering field, at more particularly to a kind of electric vehicle brake pedal failure emergency brake
Reason method.
Background technology
Orthodox car has very big difference with electric automobile, and the safety risks that it is present are also different from electric automobile.Pass
System automobile is used mostly gearbox and engine as dynamical system, and electric automobile then relies on motor and controller, traditional vapour
Oily car is merely able to flame-out in the case of brake system non-functional, often and keeps gear constant, by the braking of engine itself
Parking, but in the case of running at high speed, engine braking effect is not ideal, and if front runs into emergency episode, consequence is not
May envision, and in the case of brake system non-functional, conventional gasoline car is difficult safety stop.
The content of the invention
The brake system non-functional of electric motor car is being judged by entire car controller it is an object of the invention to provide a kind of
In the case of, judge that vehicle is presently in state after detecting gear, speed, and conversion electron gas pedal output signal,
So that motor output opposing torque so that electric motor car remains able to braking in the case of braking effect failure, allows the vehicle can
Electric vehicle brake pedal failure emergency brake treating method of the safety stop to wait for rescue.
Solution of the invention is such：
A kind of electric vehicle brake pedal failure emergency brake treating method, comprises the following steps：
（1）Pedal fault detect starting step：After brake pedal, entire car controller is detected to brakes；Such as
Fruit Braking System signal is normal, then expect to travel according to driver, and system is normally run；If Braking System signal exception,
Brake fault lamp is bright and speed detected simultaneously；
（2）Detection speed step：After entire car controller detects braking exception, entire car controller is examined to speed state parameter
Survey；If speed is not zero, range state is detected；If speed is zero, brake fault lamp is bright, and entire car controller enters
In entering emergency policy；
（3）Detection range state step：After entire car controller detects braking exception and speed is not zero, entire car controller
Range state parameter is detected；If range state is not at P grades, entire car controller enters in emergency policy；
（4）Efp state parameter detecting step：Entire car controller is detected to efp state parameter；
If efp has aperture, gas pedal aperture is converted into braking strength by entire car controller, to electric machine control system
Send opposing torque order；If efp does not have aperture, entire car controller sends instruction and is to electric machine control system
Zero.
More specifically technical scheme also includes：The step（1）In, detection is carried out to brakes to entire car controller whole
The method that vehicle controller is detected to brakes is：It is identical that detection brake pedal signal continues output in one minute including signal
Still signal output is zero for numerical signal and brake pedal.
Further：The step（3）In, the state to driving switch is divided into P grades, D grades, R grades.
Further：The brakes includes vavuum pump, braking signal switch.
Further：The step（4）The middle efp state parameter for needing detection includes that gas pedal is believed
Whether number input is zero.
Further：After there is exception in Braking System signal, when gear is linked into P grades, vehicle control unit controls electronics
The signal of gas pedal is converted into opposing torque signal input in the middle of electric system by entire car controller, is entered using motor
Row braking.
Further：When automobile occurs abnormal in brakes, when gear is in P grades, brake signal failure, oil
Gate signal is transformed into brake signal, and gas pedal can be used directly carries out emergency brake；When gear is in D grades, gear is suspended to P
Shelves, brake signal failure, throttle signal is transformed into brake signal, can be braked using gas pedal；When gear is in R
Shelves, gear is suspended to P grades, and brake signal failure, throttle signal is transformed into brake signal, and usable gas pedal is braked；Should
Emergency brake processing method also can stop vehicle safety to wait for rescue in the case of brake system non-functional.
Further：The step（2）In when to detect speed be zero, control vehicle to open before failure is not excluded
It is dynamic.
It is an advantage of the invention that by entire car controller in the case of the brake system non-functional for judging electric motor car, passing through
Detection gear, judge that vehicle is presently in state after speed, and conversion electron gas pedal output signal so that motor output
Opposing torque so that electric motor car remained able in the case of braking effect failure braking, allow vehicle can safety stop with etc.
Wait to rescue.
Brief description of the drawings
Fig. 1 is the flow chart of electric vehicle brake pedal failure emergency brake treating method of the present invention.
Fig. 2 is the schematic diagram of electric vehicle brake pedal failure emergency brake treating method of the present invention.
Specific embodiment
The present invention is described in detail below in conjunction with the accompanying drawings：
Fig. 2 is the systematic schematic diagram of one embodiment of the present of invention, and in the present embodiment, fault-signal is entered using red-fault lamp
Row display, to the failure emergency brake of electric vehicle brake pedal shown in Fig. 2 treating method, block diagram is controlled as shown in Figure 1, controls
Step processed is：
（1）, entire car controller brake pedal failure detection steps：After brake pedal, entire car controller is to brakes
Detected；
If Braking System signal is normal, expect to travel according to driver, system is normally run；
If Braking System signal exception, brake fault lamp is bright and speed detected simultaneously；
（2）, detection speed step：After entire car controller detects braking exception, entire car controller is carried out to speed state parameter
Detection.
If speed is not zero, range state is detected.
If speed is zero, brake fault lamp is bright, and entire car controller enters in emergency policy.
（3）, detection range state step：After entire car controller detects braking exception and speed is not zero, vehicle
Controller is detected to range state parameter.
If range state is in P grades, entire car controller enters in emergency policy and continues to efp shape number
Detected；
If range state is not at P grades, entire car controller enters in emergency policy.
（4）, efp state parameter detecting step：Entire car controller is carried out to efp state parameter
Detection；
If efp has aperture, gas pedal aperture is converted into braking strength by entire car controller, to motor control
System sends opposing torque order；
If efp does not have aperture, it is zero that entire car controller sends instruction to electric machine control system.
Step（1）In need to detect that brake pedal signal continues to export for one minute identical numerical signal and steps on system including signal
Still signal output is zero to dynamic pedal.
Step（3）In, the state to driving switch is divided into P grades, D grades, R grades.
Step（1）The middle brakes for needing detection includes vavuum pump, braking signal switch.
Step（3）It is middle need detection efp state parameter include accelerator pedal signal be input into whether be
Zero.
After exception occurs in Braking System signal, gear can be linked into P grades, at this time the signal meeting of efp
Opposing torque signal input is converted into in the middle of electric system by entire car controller, so as to reach the effect of motor braking.
When automobile occurs abnormal in brakes, when gear is in P grades, brake signal failure, throttle signal becomes
Change brake signal into, gas pedal can be used directly carries out emergency brake；When gear is in D grades, gear is suspended to P grades, brake letter
Number failure, throttle signal is transformed into brake signal, can be braked using gas pedal；When gear is in R grades, gear is suspended to
P grades, brake signal failure, throttle signal is transformed into brake signal, and usable gas pedal is braked；The emergency brake is processed
Method also can stop vehicle safety to wait for rescue in the case of brake system non-functional.
Further：The step（2）In when to detect speed be zero, it is necessary to will could start automobile after failture evacuation.
The present invention is described in detail by taking flow chart shown in Fig. 1 as an example below
Electric vehicle brake.
Whether entire car controller detection brakes fails, if brakes is "Yes", instrument board brake fault extremely
Lamp is lighted and entire car controller next step is operated.If normal, entire car controller continues normal work.
Entire car controller judges whether current vehicle speed is zero, if detecting if speed is not zero as "Yes" carries out next step behaviour
Make；If then instrument red-fault lamp is lighted 'No', and could continue normally travel after must excluding braking system faults.
Whether entire car controller judges gear at P grades, if carrying out next step operation for ' being ' at P grades；If 'No' is then only
It is that instrument red-fault lamp is lighted, and vehicle is according to current state normally travel.
Whether entire car controller judges electric switch pedal in initial position, if electric switch pedal signal line voltage signal is 0V,
It is judged as that ' being ' carries out next step operation；If electric switch pedal signal line voltage signal is more than 0V, it is judged as that 'No' is only then instrument
Table red-fault lamp is lighted.
The aperture of efp is converted to opposing torque signal input in electric machine control system by entire car controller,
So as to realize that motor output opposing torque reaches braking effect.
Claims (8)
1. a kind of electric vehicle brake pedal failure emergency brake treating method, it is characterised in that：Including step：
Pedal fault detect starting step：After brake pedal, entire car controller is detected to brakes；If system
Dynamic system signal is normal, then expect to travel according to driver, and system is normally run；If Braking System signal exception, brakes
Trouble light is bright and speed detected simultaneously；
Detection speed step：After entire car controller detects braking exception, entire car controller is detected to speed state parameter；
If speed is not zero, range state is detected；If speed is zero, brake fault lamp is bright, and entire car controller enters
In emergency policy；
Detection range state step：After entire car controller detects braking exception and speed is not zero, entire car controller pair
Range state parameter is detected；If range state is not at P grades, entire car controller enters in emergency policy；
Efp state parameter detecting step：Entire car controller is detected to efp state parameter；If
Efp has aperture, then gas pedal aperture is converted into braking strength by entire car controller, is sent out to electric machine control system
Send opposing torque order；If efp does not have aperture, it is zero that entire car controller sends instruction to electric machine control system.
2. electric vehicle brake pedal according to claim 1 failure emergency brake treating method, it is characterised in that：It is described
Step（1）In, entire car controller is carried out to brakes to detect that the method that entire car controller detects brakes is：
But detection brake pedal signal continues to export within one minute identical numerical signal and brake pedal signal output including signal
It is zero.
3. electric vehicle brake pedal according to claim 1 failure emergency brake treating method, it is characterised in that：It is described
Step（3）In, the state to driving switch is divided into P grades, D grades, R grades.
4. electric vehicle brake pedal according to claim 1 failure emergency brake treating method, it is characterised in that：It is described
Brakes includes vavuum pump, braking signal switch.
5. electric vehicle brake pedal according to claim 1 failure emergency brake treating method, it is characterised in that：It is described
Step（4）The middle efp state parameter for needing detection includes whether accelerator pedal signal input is zero.
6. electric vehicle brake pedal according to claim 1 failure emergency brake treating method, it is characterised in that：Work as system
After exception occurs in dynamic system signal, when gear is linked into P grades, the signal of vehicle control unit controls efp is by vehicle
Controller is converted into opposing torque signal input in the middle of electric system, is braked using motor.
7. electric vehicle brake pedal according to claim 1 failure emergency brake treating method, it is characterised in that：In vapour
When brakes occurs abnormal, when gear is in P grades, brake signal failure, throttle signal is transformed into brake signal to car,
Gas pedal can be used directly carries out emergency brake；When gear is in D grades, gear is suspended to P grades, brake signal failure, throttle letter
Number brake signal is transformed into, can be braked using gas pedal；When gear is in R grades, gear is suspended to P grades, brake signal
Failure, throttle signal is transformed into brake signal, and usable gas pedal is braked；The emergency brake processing method is in braking system
Also vehicle safety can be stopped to wait for rescue in the case of system failure.
8. electric vehicle brake pedal according to claim 1 failure emergency brake treating method, it is characterised in that：It is described
Step（2）In when to detect speed be zero, control vehicle to start before failure is not excluded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710057208.0A CN106891881A (en) | 2017-01-26 | 2017-01-26 | Electric vehicle brake pedal failure emergency brake treating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710057208.0A CN106891881A (en) | 2017-01-26 | 2017-01-26 | Electric vehicle brake pedal failure emergency brake treating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106891881A true CN106891881A (en) | 2017-06-27 |
Family
ID=59197970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710057208.0A Pending CN106891881A (en) | 2017-01-26 | 2017-01-26 | Electric vehicle brake pedal failure emergency brake treating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106891881A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108944874A (en) * | 2018-07-26 | 2018-12-07 | 北京新能源汽车股份有限公司 | Control method and system for electric automobile remote control driving |
| CN109435933A (en) * | 2018-10-12 | 2019-03-08 | 安徽江淮汽车集团股份有限公司 | Brake fault control method |
| CN109835316A (en) * | 2017-11-27 | 2019-06-04 | 上海汽车集团股份有限公司 | A kind of processing method, device and the entire car controller of automatic parking disabler |
| CN110103931A (en) * | 2019-04-28 | 2019-08-09 | 北京百度网讯科技有限公司 | A kind of method, apparatus detecting vehicle braking exception |
| CN110126643A (en) * | 2019-04-26 | 2019-08-16 | 北京理工大学 | The control method and system of distributed-driving electric automobile under motor failure state |
| CN110562246A (en) * | 2019-08-26 | 2019-12-13 | 中国第一汽车股份有限公司 | parking control method and device, vehicle and storage medium |
| CN112158149A (en) * | 2020-08-26 | 2021-01-01 | 东风汽车集团有限公司 | Method and system for identifying clamping stagnation of accelerator pedal |
| CN112744083A (en) * | 2019-10-30 | 2021-05-04 | 北京新能源汽车股份有限公司 | Safety control method and device for brake system fault and electric automobile |
| US12005875B2 (en) | 2022-11-16 | 2024-06-11 | Ford Global Technologies, Llc | Vehicle brake-by-wire control system |
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| CN202325863U (en) * | 2011-11-21 | 2012-07-11 | 长安大学 | Emergency parking system for treating braking failure of automobile |
| CN104309597A (en) * | 2014-09-26 | 2015-01-28 | 同济大学 | Control method for hydraulic dual motor-driven electronic hydraulic braking system |
| CN104494463A (en) * | 2014-12-30 | 2015-04-08 | 西安正麒电气有限公司 | Pure electric automobile torque control method |
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Patent Citations (3)
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| CN202325863U (en) * | 2011-11-21 | 2012-07-11 | 长安大学 | Emergency parking system for treating braking failure of automobile |
| CN104309597A (en) * | 2014-09-26 | 2015-01-28 | 同济大学 | Control method for hydraulic dual motor-driven electronic hydraulic braking system |
| CN104494463A (en) * | 2014-12-30 | 2015-04-08 | 西安正麒电气有限公司 | Pure electric automobile torque control method |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109835316A (en) * | 2017-11-27 | 2019-06-04 | 上海汽车集团股份有限公司 | A kind of processing method, device and the entire car controller of automatic parking disabler |
| CN108944874A (en) * | 2018-07-26 | 2018-12-07 | 北京新能源汽车股份有限公司 | Control method and system for electric automobile remote control driving |
| CN109435933A (en) * | 2018-10-12 | 2019-03-08 | 安徽江淮汽车集团股份有限公司 | Brake fault control method |
| CN110126643A (en) * | 2019-04-26 | 2019-08-16 | 北京理工大学 | The control method and system of distributed-driving electric automobile under motor failure state |
| CN110126643B (en) * | 2019-04-26 | 2021-02-02 | 北京理工大学 | Control method and system for distributed driving electric automobile in motor failure state |
| CN110103931A (en) * | 2019-04-28 | 2019-08-09 | 北京百度网讯科技有限公司 | A kind of method, apparatus detecting vehicle braking exception |
| CN110103931B (en) * | 2019-04-28 | 2024-01-19 | 北京百度网讯科技有限公司 | Method and device for detecting abnormal braking of vehicle |
| CN110562246A (en) * | 2019-08-26 | 2019-12-13 | 中国第一汽车股份有限公司 | parking control method and device, vehicle and storage medium |
| CN112744083A (en) * | 2019-10-30 | 2021-05-04 | 北京新能源汽车股份有限公司 | Safety control method and device for brake system fault and electric automobile |
| CN112744083B (en) * | 2019-10-30 | 2022-04-29 | 北京新能源汽车股份有限公司 | Safety control method and device for brake system fault and electric automobile |
| CN112158149A (en) * | 2020-08-26 | 2021-01-01 | 东风汽车集团有限公司 | Method and system for identifying clamping stagnation of accelerator pedal |
| US12005875B2 (en) | 2022-11-16 | 2024-06-11 | Ford Global Technologies, Llc | Vehicle brake-by-wire control system |
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| PB01 | Publication | ||
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Application publication date: 20170627 |