CN105383462B - A kind of electronic stability program of automobile control system and control method - Google Patents
A kind of electronic stability program of automobile control system and control method Download PDFInfo
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- CN105383462B CN105383462B CN201510881067.5A CN201510881067A CN105383462B CN 105383462 B CN105383462 B CN 105383462B CN 201510881067 A CN201510881067 A CN 201510881067A CN 105383462 B CN105383462 B CN 105383462B
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- brake
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- generator
- automobile
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Classifications
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- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/17—Using electrical or electronic regulation means to control braking
- B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
-
- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/36—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
- B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
- B60T8/363—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems
-
- 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
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/60—Regenerative braking
- B60T2270/613—ESP features related thereto
Abstract
The invention discloses a kind of electronic stability program of automobile control system and control methods, including generator brake device and brake device, the generator brake device includes master cylinder, switching valve and pedal simulator and the generator with automobile driving wheel effect, when generator brake device works, the brake fluid of the master cylinder flows to pedal simulator through switching valve, the brake device includes driving motor, booster pump, pressure charging valve, brake cylinder, the pressure charging valve is normally off, when brake device works, the driving motor and supercharging pump work simultaneously establish pressure, after pressure value persistently rises and opens pressure charging valve, brake oil flow brake cylinder.Present invention introduces with the relevant component of energy recovery function, make new-energy automobile that can carry out energy regenerating in braking process, and the present invention is designed with pedal simulator, make pedal sense and conventional brake in the braking process of driver very nearly the same.
Description
Technical field
The present invention relates to automobile brake control technology more particularly to a kind of electronic stability program of automobile control system and controls
Method.
Background technology
After implementing a series of sustainable development behaves such as energy-saving and emission-reduction, environmental protection in China, cause and sent out energetically
Open up the upsurge of new energy vehicle.2010, new-energy automobile industry was included in national seven great strategy new industries by management level.State
The deployment of family's strategic level is even more to excite the enthusiasm that people open up new-energy automobile industry.It is fluffy with new-energy automobile industry
The exhibition of breaking out, associated industry-by-industry technology also proposed new requirement.
Extensive use of the accumulator, motor (generator) of large capacity on new energy vehicle, is braking new-energy automobile
Energy regenerating in the process is possibly realized.Therefore in brake system of car, how under the premise of automobile braking safety is ensured,
Braking system is enable to participate in the energy regenerating of automobile and the braking of automobile is made more comfortably to become a new subject in braking system.
Invention content
The technical problems to be solved by the invention are just to provide a kind of electronic stability program of automobile control system and controlling party
Method can be applied on new-energy automobile, have energy recovery function.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：A kind of electronic stability program of automobile control system
System, including generator brake device and brake device, the generator brake device include master cylinder, switching valve and
Pedal simulator and the generator with automobile driving wheel effect, when generator brake device works, the master cylinder
Brake fluid flows to pedal simulator through switching valve, and the brake device includes driving motor, booster pump, pressure charging valve, system
Dynamic wheel cylinder, the pressure charging valve is normally off, and when brake device works, the driving motor and supercharging pump work are simultaneously
Pressure is established, after pressure value persistently rises and opens pressure charging valve, brake oil flow brake cylinder.
Preferably, the brake fluid come out from master cylinder is divided into two brake circuits, pressure is connected on brake circuit
Force snesor.
Further, the brake cylinder is connected with pressure reducing valve.
Further, the pressure reducing valve is connected with protection valve, and the protection valve is connected to oil sources by oily filter.
Preferably, being additionally provided with high pressure accumulator, the high pressure accumulator is used to filter the pulse of booster pump generation, if
When booster pump pumping rate cannot meet braking requirement, compensated by high pressure accumulator.
The present invention also provides a kind of electronic stability program of automobile control method, automobile driving wheel is first in braking process
It is first worked by generator brake device, Automobile drive wheel drive generator carries out power generation operation, and the brake fluid of master cylinder passes through
Switching valve flows to pedal simulator and generates pressure, the pressure value detected according to pressure sensor, driving motor and booster pump
The pressure of demand is started to work and begins setting up, in the case that torque needed for the power generation in generator fully meets brake request,
The braking of automobile is completed completely by generator brake device, generator generated braking moment in power generation process, equivalent
Brake fluid is isolated by normally closed pressure charging valve；In the case that torque needed for power generation in generator cannot meet brake request,
The pressure detected with pressure sensor persistently rises, and the pressure value that driving motor and booster pump are established persistently rises, and most
The pressure charging valve of normally off is opened eventually, pressure charging valve carries out brake cylinder brake fluid supplement, and brake device is started to work,
Automobile driving wheel braking at this time will jointly be completed by generator brake device and brake device, to meet the system of vehicle
Dynamic demand.
Further, when locking or locking trend occurs in wheel, generator brake device is stopped, at this point, increasing
Pressure valve closes pressure reducing valve simultaneously and protection valve is opened, and the brake fluid outflow in brake cylinder reaches oil by pressure reducing valve and protection valve
Source, the brake pressure of brake cylinder decline, and wheel replys not locking state；
Further, in automobile active brake, driver does not have braking intention, and master cylinder does not generate oil pressure, vapour
Driving motor starts when vehicle electronic control unit judges that vehicle has the danger breakked away or collided according to vehicle sensor signal
Driving supercharging pump work simultaneously establishes oil pressure, and oil pressure enters brake cylinder by pressure charging valve and starts to wheel braking.
The technical solution adopted by the present invention, introducing and the relevant generator brake device of energy recovery function, make new energy
Automobile can carry out energy regenerating in braking process, and the present invention is designed with pedal simulator, make the braking of driver
Pedal sense and conventional brake are very nearly the same in journey.
The beneficial effects of the invention are as follows：
Automobile brake is introduced by the brake fluid pressure that booster pump is generated, can realize during conventional brake, brake
Master cylinder and brake cylinder are kept completely separate, and so as to be reduced to the brake pressure request of master cylinder, it is numerous can to cancel new-energy automobile
Trivial force aid system for braking.
It is designed by the pressure charging valve of special normally off, makes automobile driving wheel in braking process, first carry out generator
Power generation operation.In the case that torque fully meets brake request needed for power generation in generator, the braking of automobile is by driving wheel
Generator brake and completion.Generator generated braking moment in power generation process, equivalent brake fluid will not go to brake
Device, and be isolated by normally closed pressure charging valve.In the case that torque needed for power generation in generator cannot meet brake request, increase
Pressure valve starts to carry out automobile brake cylinder brake fluid supplement, and automobile driving wheel braking will be by generator and brake jointly Lai complete
Into this braking is combined with the height of energy regenerating, is had the advantages that brake safe is comfortable and is reduced energy loss.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and detailed description：
Fig. 1 is the hydraulic schematic diagram of EESC solenoid valves；
Fig. 2 is hydraulic figure of the EESC solenoid valves when driving wheel individually is completed to brake by generator；
Fig. 3 is the hydraulic figure that EESC solenoid valves are completed braking in driving wheel jointly by generator and brake；
Fig. 4 is the hydraulic figure that EESC solenoid valves are switched to ANTI LOCK in energy recovery state；
Fig. 5 is hydraulic of the EESC solenoid valves in electronic stability program control system or intelligent driving active brake
Figure.
In figure：Master cylinder 1, first pressure sensor 201, second pressure sensor 202, third pressure sensor 203,
First switching valve 301, the second switching valve 302, third switching valve 303, the 4th switching valve 304, the first pedal simulator 401, the
Two pedal simulators 402, high pressure accumulator 5, the first pressure charging valve 601, the second pressure charging valve 602, third pressure charging valve 603, the 4th increases
Pressure valve 604, booster pump 7, driving motor 8, the first pressure reducing valve 901, the second pressure reducing valve 902, third pressure reducing valve 903, the 4th decompression
Valve 904 protects valve 10, oily filter 11, oil sources 12, the first brake wheel cylinder 1301, second brake wheel cylinder 1302, third brake
Wheel cylinder 1303, the 4th brake wheel cylinder 1304.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figures 1 to 4, a kind of electronic stability program of automobile control system, including generator brake device and braking
Device brake apparatus, wherein generator brake device include master cylinder 1, switching valve and pedal simulator and and automobile driving wheel
The generator of effect, brake device include driving motor 8, booster pump 7, pressure charging valve, brake cylinder, and wherein pressure charging valve is
Normally off.
The brake fluid that master cylinder 1 comes out is divided into two brake circuits, is respectively used to the braking of each two automobile driving wheels,
First brake circuit is terminating first pressure sensor 201 close to master cylinder 1, and the first brake circuit passes through the first switching valve
301st, the first brake cylinder 1301, the second brake cylinder 1302 are connected respectively to after the second switching valve 302, wherein the first braking point
Pump 1301 connects second pressure sensor 202, and the first brake cylinder 1301, the second brake cylinder 1302 pass through the first pressure reducing valve respectively
901st, protection valve 10 is connected to after the second pressure reducing valve 902, protection valve 10 is connected to oil sources 12 by oily filter 11；First switching valve
301st, the second switching valve 302 connects the first pedal simulator 401；Oil sources 12 is connected to booster pump 7, booster pump 7 by oily filter 11
It is driven by driving motor 8 and connects 5 and first pressure charging valve 601 of high pressure accumulator, the second pressure charging valve 602, the first pressure charging valve
601st, the second pressure charging valve 602 is connected respectively to the first brake cylinder 1301, the second brake cylinder 1302.The company of second brake circuit
It is identical with the first brake circuit to connect mode, the second brake circuit by connecting respectively after third switching valve 303, the 4th switching valve 304
Third brake cylinder 1303, the 4th brake cylinder 1304 are connected to, wherein the 4th brake cylinder 1304 connects third pressure sensor
203, third brake cylinder 1303, the 4th brake cylinder 1304 after third pressure reducing valve 903, the 4th pressure reducing valve 904 respectively by connecting
It is connected to protection valve 10；Third switching valve 303, the 4th switching valve 304 connect the second pedal simulator 402；Third pressure charging valve 603,
4th pressure charging valve 604 is connected respectively to third brake cylinder 1303, the 4th brake cylinder 1304.
Fig. 1 is the hydraulic schematic diagram of EESC solenoid valves.Master cylinder 1, first pressure sensor as seen from Figure 1
201st, the first switching valve 301, the second switching valve 302 and the first pedal simulator 401 can as a relatively independent entirety,
By the first switching valve 301, the adjustment of the second switching valve 302, the first pedal simulator of brake oil flow 401 of master cylinder 1,
And the intention of driver is identified according to first pressure sensor 201.Vehicle brakes required brake fluid from booster pump 7, height
Press 5 and first pressure charging valve 601 of accumulator, the second pressure charging valve 602, the first pressure charging valve 601 when needing energy regenerating, the second supercharging
Valve 602 can prevent part brake fluid from entering the first brake cylinder 1301, the second brake cylinder 1302.High pressure accumulator 5 is on the one hand
The pulse of the generation of booster pump 7 can be filtered, makes pressure source more stable；Still further aspect, if cannot in 7 pumping rate of booster pump
When meeting braking requirement, compensated by high pressure accumulator 5.The braking of first brake cylinder 1301, the second brake cylinder 1302
Liquid can be monitored by second pressure sensor 202, and vehicle's current condition generator can be calculated according to vehicle present speed
Stopping power passes through first pressure sensor 201 and the pressure differential of second pressure sensor 202 and generator brake capabilities might
To realize the closed-loop control of synthetical restraint situation.First brake cylinder 1301, the second brake cylinder 1302 connect first and subtract respectively
901 and second pressure reducing valve 902 of pressure valve, the first pressure reducing valve 901, the second pressure reducing valve 902 connection protection valve 10.First pressure reducing valve 901,
Second pressure reducing valve 902 is respectively completed the first brake cylinder 1301, and the pressure of the second brake cylinder 1302 is adjusted, and protection valve 10 then exists
In the case of depressurizing defective valve, ensure the braking ability for meeting wheel.Simultaneously in the case of the failure of the electric function of solenoid valve,
First brake cylinder 1301, the second brake cylinder 1302, to complete the part of vehicle are flowed directly by the brake fluid of master cylinder 1
Brake efficiency.The operation principle of second brake circuit is identical with the first above-mentioned brake circuit, is not repeating.
Fig. 2 is hydraulic figure of the EESC solenoid valves when driving wheel individually is completed to brake by generator.It can be seen by Fig. 2
Go out, driver has begun to brake under this state, but the brake fluid of master cylinder 1 does not remove brake cylinder, and is cut by first
Change valve 301, the second switching valve 302 flows to the first pedal simulator 401 and generates pressure.It is examined according to first pressure sensor 201
The pressure value measured, driving motor 8 and booster pump 7 start to work and begin setting up the pressure of demand.This course of work drives
Braking torque caused by wheel power generation can meet the braking requirement of vehicle, therefore the braking oil pressure that booster pump generates cannot be opened often
The first pressure charging valve 601, the second pressure charging valve 602 of closed state, make the braking of wheel be completed completely by power generation torque.
Fig. 3 is the hydraulic figure that EESC solenoid valves are completed braking in driving wheel jointly by generator and brake.By Fig. 3
As can be seen that the braking requirement that the generator brake of driving wheel will cannot meet vehicle in this condition.With pressure sensing
The pressure that device detects persistently rises, and the pressure value that driving motor 8 and booster pump 7 are established persistently rises, and finally open normally closed
The first pressure charging valve 601, the second pressure charging valve 602 of state, under the action of driving motor 8 and booster pump 7, brake oil flow first
Brake cylinder 1301, the second brake cylinder 1302 and beginning and power generation torque complete braking to meet the braking need of vehicle together
It asks.
Fig. 4 is the hydraulic figure that EESC is switched to ANTI LOCK in energy recovery state.As seen from Figure 4,
When locking or locking trend occurs in wheel, automobile energy recycling function revocation, at this moment vehicle is expired completely by hydraulic braking
Sufficient braking requirement.For example left front (FL) is taken turns when having locking phenomenon or locking trend, the first pressure charging valve 601 closes the first decompression simultaneously
Valve 901 and protection valve 10 are opened, and the brake fluid outflow in the first brake cylinder 1301 is by the first pressure reducing valve 901 and protection valve 10
Oil sources 12 is reached, the brake pressure of the first brake cylinder 1301 declines, and wheel replys not locking state.
Fig. 5 is hydraulic of the EESC solenoid valves in electronic stability program control system or intelligent driving active brake
Figure.As seen from Figure 5, driver does not have braking intention in this process, and master cylinder 1 is without generating oil pressure.ECU (electricity
Sub-control unit) according to sensor signal judge vehicle exist break away or collision danger, at this moment driving motor 8 start to drive
Booster pump 7 starts to work and establishes oil pressure, and oil pressure enters the first brake cylinder by the first pressure charging valve 601, the second pressure charging valve 602
1301st, the second brake cylinder 1302 starts to wheel braking.
The active boost function of the EESC of the present invention can directly carry out vehicle braking, and new-energy automobile is made to cancel master cylinder
Power-assisted requirement；Increase pedal simulator in the EESC of the present invention, make pedal sense and conventional system in the braking process of driver
It is dynamic very nearly the same.Since the present invention is based on electronic stability program of automobile control system's development, so the application of the present invention is not
The energy recovery function of only electronics vehicle body stabilization function, also new-energy automobile.And it is stepped on what conventional brake was not much different
Sole feels the popularization convenient for product.
Claims (5)
1. a kind of electronic stability program of automobile control system, it is characterised in that：Including generator brake device and brake
Device, what the generator brake device was acted on including master cylinder, switching valve and pedal simulator and with automobile driving wheel
Generator, when generator brake device works, the brake fluid of the master cylinder flows to pedal simulator through switching valve, described
Brake device includes driving motor, booster pump, pressure charging valve, brake cylinder, and the pressure charging valve is normally off, is being braked
When device brake apparatus works, the driving motor and supercharging and establish pressure at pump work, when pressure value persistently rises and opens increasing
After pressure valve, brake oil flow brake cylinder is additionally provided with high pressure accumulator, and the high pressure accumulator is used to filter booster pump generation
If pulse when booster pump pumping rate cannot meet braking requirement, is compensated by high pressure accumulator；Automobile driving wheel exists
It in braking process, is worked first by generator brake device, Automobile drive wheel drive generator carries out power generation operation, master cylinder
Brake fluid flow to pedal simulator by switching valve and generate pressure, the pressure value detected according to pressure sensor, driving
Motor and booster pump start to work and begin setting up the pressure of demand, and torque needed for the power generation in generator fully meets braking will
In the case of asking, the braking of automobile is completed completely by generator brake device, generator generated braking in power generation process
Torque, equivalent brake fluid are isolated by normally closed pressure charging valve；Torque needed for power generation in generator cannot meet braking will
In the case of asking, the pressure detected with pressure sensor persistently rises, and the pressure value that driving motor and booster pump are established is held
It is continuous to rise, and the pressure charging valve of normally off is finally opened, pressure charging valve carries out brake cylinder brake fluid supplement, brake dress
Start-up operation is put, automobile driving wheel braking at this time will jointly be completed by generator brake device and brake device, with
Meet the braking requirement of vehicle；When locking or locking trend occurs in wheel, generator brake device is stopped, at this point,
Pressure charging valve closes pressure reducing valve simultaneously and protection valve is opened, and the brake fluid outflow in brake cylinder is reached by pressure reducing valve and protection valve
Oil sources, the brake pressure of brake cylinder decline, and wheel restores not locking state；In automobile active brake, driver does not make
Dynamic to be intended to, master cylinder does not generate oil pressure, and vehicle electronic control unit judges that vehicle exists according to vehicle sensor signal
Driving motor starts driving supercharging pump work and establishes oil pressure during the danger breakked away or collided, and oil pressure enters braking by pressure charging valve
Wheel cylinder starts to wheel braking.
2. a kind of electronic stability program of automobile control system according to claim 1, it is characterised in that：Go out from master cylinder
The brake fluid come is divided into two brake circuits, and pressure sensor is connected on brake circuit.
3. a kind of electronic stability program of automobile control system according to claim 1, it is characterised in that：The brake cylinder
It is connected with pressure reducing valve.
4. a kind of electronic stability program of automobile control system according to claim 3, it is characterised in that：The pressure reducing valve connects
It is connected to protection valve.
5. a kind of electronic stability program of automobile control system according to claim 4, it is characterised in that：The protection valve leads to
It crosses oily filter and is connected to oil sources.
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| CN201510881067.5A CN105383462B (en) | 2015-12-03 | 2015-12-03 | A kind of electronic stability program of automobile control system and control method |
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| CN201510881067.5A CN105383462B (en) | 2015-12-03 | 2015-12-03 | A kind of electronic stability program of automobile control system and control method |
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| CN105383462B true CN105383462B (en) | 2018-06-19 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106043266A (en) * | 2016-06-21 | 2016-10-26 | 杭州虬龙科技有限公司 | Braking system for electric vehicle |
| CN107244316B (en) * | 2017-05-11 | 2019-07-23 | 浙江零跑科技有限公司 | Vehicle automatic braking supercharging accumulator |
| CN109649358B (en) * | 2018-12-29 | 2024-01-30 | 岭南师范学院 | Hydraulic control system for automatic braking of automobile and automobile with hydraulic control system |
| CN110406518A (en) * | 2019-07-11 | 2019-11-05 | 浙江亚太机电股份有限公司 | Electro-hydraulic coupling line traffic control energy assisted braking system and method |
| CN115366854A (en) * | 2019-09-30 | 2022-11-22 | 华为技术有限公司 | Distributed braking system of automobile, automobile and control method of automobile |
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