CN106553628B - Brake control method, system and the vehicle of vehicle - Google Patents
Brake control method, system and the vehicle of vehicle Download PDFInfo
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- CN106553628B CN106553628B CN201510632089.8A CN201510632089A CN106553628B CN 106553628 B CN106553628 B CN 106553628B CN 201510632089 A CN201510632089 A CN 201510632089A CN 106553628 B CN106553628 B CN 106553628B
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- brake force
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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
- 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
- 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
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/06—Hill holder; Start aid systems on inclined road
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The present invention provides a kind of brake control method of vehicle, system and vehicles, this method comprises: obtaining shift signal and vehicle operating parameters；If shift signal is neutral signal, travel condition of vehicle further is judged according to vehicle operating parameters；If travel condition of vehicle is dead ship condition, electronic parking executing agency is controlled as vehicle and provides brake force to keep stationary vehicle；If travel condition of vehicle is driving status, current vehicle speed is less than preset vehicle speed and active brake fails, controls electronic parking executing agency and vehicle is braked so that vehicle-state is transferred to parked state.Method of the invention is able to ascend vehicle electrically controlling functional integration, reduces vehicle installation, cost of upkeep, while additional extension P keeps off function, improves the driving facility and safety of vehicle.
Description
Technical field
The present invention relates to automobile technical field, in particular to a kind of brake control method of vehicle, system and vehicle.
Background technique
For the vehicle equipped with automatic transmission in parking, brake pedal should be first slammed, after vehicle comes to a complete stop, by electronics
Selector handle keeps off (P gear) position setting in parking, and control unit for automatic shift keeps off signal by detection P to drive phase at this time
Answer ground lockable mechanism, lockable mechanism herein be, for example, motor can be made to combine with ratchet, the devices such as electromagnetism valve follower combines.
However, the existing vehicle equipped with automatic transmission has the drawback that in parking
It 1), can be by P due to vehicle self weight when driver, which forgets pull-up hand brake system, to be linked into P gear and be parked on ramp
The gap of the lockable mechanism of gear eliminates, and biggish frictional force is generated inside lockable mechanism, increases the movement of shift handle
Resistance, therefore when being again started up, driver, which is difficult to keep off from P, takes carry out moving operation.
2) lockable mechanism that the vehicle P equipped with automatic transmission is kept off is complicated, and occupying vehicle installation space can be larger, another party
Uneven road causes vehicle to shake the abrasion that will cause lockable mechanism when due to undesirable driving habit or parking, and vehicle is set
Meter, installation, cost of upkeep are higher.
3) it only locks in a manner of the rolling for preventing driving wheel, not can effectively solve by by the output shaft of automatic gear-box
The danger for causing car slipping when vehicle sloping route starting because being short of power will lead to a disaster when serious, and there are security risks.
Summary of the invention
In view of this, the present invention is directed to propose a kind of brake control method of vehicle, this method are able to ascend vehicle electrically controlling
Functional integration reduces vehicle installation, cost of upkeep, while additional extension P keeps off function, improves the driving facility and peace of vehicle
Quan Xing.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of brake control method of vehicle, comprising the following steps: obtain shift signal and vehicle operating parameters；If institute
Stating shift signal is that P keeps off signal, then further judges travel condition of vehicle according to the vehicle operating parameters；If the vehicle
Operating status is dead ship condition, then controls electronic parking executing agency as vehicle and provide brake force to keep stationary vehicle；If
The travel condition of vehicle is driving status, current vehicle speed is less than preset vehicle speed and active brake fails, then controls the electronics
Control device brakes vehicle so that the vehicle-state is transferred to the parked state.
Further, if the travel condition of vehicle is dead ship condition, controlling electronic parking executing agency is vehicle
Brake force is provided to keep stationary vehicle, is specifically included: the angle of gradient of detection vehicle parking position；If vehicle parking position
The angle of gradient set is greater than predetermined angular, then controls electronic parking executing agency to wheel and apply the first estate brake force to keep vehicle
It is static；If the angle of gradient of the vehicle parking position is less than or equal to the predetermined angular, electronic parking execution is controlled
Mechanism applies the second social estate system power to wheel to keep stationary vehicle, wherein the first estate brake force is greater than described the
Two grade brake force.
Further, if the travel condition of vehicle is driving status, current vehicle speed is less than preset vehicle speed and active is made
Dynamic failure, then control the electronic parking executing agency and braked to vehicle so that the vehicle-state is transferred to the parking shape
State specifically includes: before the vehicle-state is transferred to the parked state, controlling the electronic parking executing agency to described
Wheel applies the second social estate system power to control vehicle braking until being transferred to the parked state, wherein the active brake is lost
Effect refers to brake pedal and/or brake piping failure.
Further, further includes: if not judging travel condition of vehicle according to the vehicle operating parameters, control
The electronic parking executing agency applies the first instantaneous brake force to the wheel；The vehicle is judged according to the acceleration of vehicle
Operating status；If it is the driving status, the electronic parking executing agency is controlled to the wheel and is continuously applied
Two brake force further judge the travel condition of vehicle until described according to the acceleration of vehicle to brake to vehicle
The wheel is controlled after vehicle parking and is continuously applied third brake force to keep stationary vehicle, wherein the first brake force is less than
Two brake force, the second brake force are less than third brake force.
Further, the vehicle operating parameters include: that speed signal, engine rotational speed signal, ignition signal, braking are stepped on
Partitioned signal, accelerator pedal signal and acceleration signal.
Compared with the existing technology, the control method of engine of the present invention has the advantage that
The brake control method of vehicle of the present invention leads under the premise of not changing driver's normal driving habit
It crosses electronic parking and realizes P gear parking, realize speed changer reliably locking, promote vehicle electrically controlling by cancelling P block locking mechanism
Functional integration reduces vehicle installation, cost of upkeep, while additional extension P keeps off function, improves the driving facility and peace of vehicle
Quan Xing.
It is another object of the present invention to the braking control system for proposing a kind of vehicle, which is able to ascend vehicle electrical
Control functional integration, reduce vehicle installation, cost of upkeep, while additional extension P keep off function, improve vehicle driving facility and
Safety.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of braking control system of vehicle, comprising: detection module, for detecting shift signal and vehicle operating parameters；
Electronic parking executing agency, for providing brake force for vehicle；And control module, the control module respectively with the detection mould
Block is connected with the electronic parking executing agency, is used for when the shift signal is that P keeps off signal, further according to the vehicle
Operating parameter judges travel condition of vehicle, if the travel condition of vehicle is dead ship condition, controls electronic parking and executes machine
Structure provides brake force for vehicle to keep stationary vehicle, if the travel condition of vehicle is driving status, current vehicle speed is less than
Preset vehicle speed and active brake failure, then control the electronic parking executing agency and braked to vehicle so that the vehicle shape
State is transferred to the parked state.
Further, the control module controls electronic parking executing agency when travel condition of vehicle is dead ship condition
Brake force is provided for vehicle to keep stationary vehicle, comprising: the angle of gradient of detection vehicle parking position, if the vehicle parking
The angle of gradient of position is greater than predetermined angular, then controls electronic parking executing agency to wheel and apply the first estate brake force to keep
Stationary vehicle controls electronic parking and holds if the angle of gradient of the vehicle parking position is less than or equal to the predetermined angular
Row mechanism applies the second social estate system power to wheel to keep stationary vehicle, wherein second described in the first estate brake force
Social estate system power.
Further, the control module travel condition of vehicle be driving status, current vehicle speed be less than preset vehicle speed and
When active brake fails, control the electronic parking executing agency vehicle is braked so that the vehicle-state be transferred to it is described
Parked state, comprising: before the vehicle-state is transferred to the parked state, control the electronic parking executing agency to institute
It states wheel and applies the second social estate system power to control vehicle braking until being transferred to the parked state, wherein the active brake
Failure refers to brake pedal and/or brake piping failure.
Further, the control module is also used to: if not judging that vehicle is transported according to the vehicle operating parameters
Row state then controls the electronic parking executing agency and applies the first instantaneous brake force to the wheel；According to adding for vehicle
Travel condition of vehicle described in velocity estimated；If it is the driving status, the electronic parking executing agency is controlled to described
Wheel is continuously applied the second brake force to brake to vehicle, and further judges that the vehicle is transported according to the acceleration of vehicle
Row state is continuously applied third brake force until controlling the wheel after the vehicle parking to keep stationary vehicle.
The braking control system of the vehicle and the brake control method of above-mentioned vehicle are had compared with the existing technology
Some advantages are identical, and details are not described herein.
It is another object of the present invention to propose a kind of vehicle, the electric control function integrated level of the vehicle is high, installation, maintenance
It is at low cost, while being capable of additional extension P gear function, raising driving facility and travel safety.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of vehicle is provided with the braking control system of the vehicle as described in above-described embodiment.
Possessed advantage is identical compared with the existing technology with the braking control system of above-mentioned vehicle for the vehicle,
This is repeated no more.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the brake control method of vehicle described in the embodiment of the present invention；
Fig. 2 is the flow chart of the brake control method of vehicle described in another embodiment of the present invention；
Fig. 3 is the static cost control flow chart of the brake control method of vehicle described in the embodiment of the present invention；
Fig. 4 is the dynamic control flow chart of the brake control method of vehicle described in the embodiment of the present invention；
Fig. 5 is the limping control flow chart of the brake control method of vehicle described in the embodiment of the present invention；
Fig. 6 is that the limping of the brake control method of vehicle described in the embodiment of the present invention controls signal flow diagram；
Fig. 7 is the structural block diagram of the braking control system of vehicle described in the embodiment of the present invention；
Fig. 8 be the present invention be strength vehicle braking control system whole principle assumption diagram.
Description of symbols:
Braking control system, 100- detection module, 200- electronic parking executing agency, the 300- of 1000- vehicle control mould
Block.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 1 is the flow chart of the brake control method of vehicle according to an embodiment of the invention.
In the following description, vehicle is, for example, the vehicle for being equipped with automatic transmission.
As shown in Figure 1, the brake control method of vehicle according to an embodiment of the invention, includes the following steps:
S1: shift signal and vehicle operating parameters are obtained.
In one embodiment of the invention, as shown in Figure 1, and combine Fig. 2, such as can be inputted by the selector of vehicle
The shift signal of unit acquisition vehicle.Vehicle operating parameters for example, speed signal, engine rotational speed signal, ignition signal,
Brake pedal signal, accelerator pedal signal and acceleration signal.
S2: if shift signal is that P keeps off signal, travel condition of vehicle further is judged according to vehicle operating parameters.It changes
Yan Zhi believes according to engine speed, speed signal, ignition signal (ignition key position), accelerator pedal signal, brake pedal
Number and the comprehensive descisions vehicle such as acceleration signal operating status.Such as when gear be non-D, R gear, speed be 0 can determine that for
Vehicle is dead ship condition；When vehicle is in fired state, engine speed be not 0, gear be non-D, R gear, speed is 0 to sentence
Break as driver's temporary parking or waits red light phases.
S3: if travel condition of vehicle is dead ship condition, electronic parking executing agency is controlled as vehicle, brake force is provided
To keep stationary vehicle.
In one embodiment of the invention, as shown in connection with fig. 3, step S3 namely static clamping parking control model,
It specifically includes: for example by the angle of gradient of obliquity sensor real-time detection vehicle parking position；If the slope of vehicle parking position
Angle is spent to be greater than predetermined angular (such as 3%) shown in Fig. 3 then controls electronic parking executing agency to wheel and applies the first estate system
Power (for example, maximum braking force) is to keep stationary vehicle；If the angle of gradient of vehicle parking position is less than or equal to predetermined angle
Degree, such as vehicle then control electronic parking executing agency to wheel and apply the second grade when on level road or the lesser road of the gradient
Brake force is to keep stationary vehicle, wherein the first estate brake force is greater than the second social estate system power.Wherein, why will braking
Power, which is divided into, distinguishes the first estate brake force and the second social estate system power, is the use longevity in order to extend electronic parking executing agency
Life.
It should be noted that in the present invention, due to eliminating relevant latch device in automatic transmission, selector is stayed
Vehicle shift signal is just used as the desired signal of driver's parking, and electronic parking control unit activates electronics to stay according to P gear signal
Vehicle executing agency completes pinching action, and shows parking by HMI (, Human Machine Interface, man-machine interface)
Situation.It is locked by rotation direction of the electronic parking executing agency to wheel, has cut off wheel to the reverse dynamic of speed changer
Power transmission, protect the counter-rotating of transmission gear group and caused by mechanical damage.Further, to avoid driver from lighting a fire
It is pushed and pulled repeatedly under state in the case that selector is sent and repeatedly activates electronic parking control unit, electronic parking control unit can deposit
Current parking clamped condition is stored up, subsequent P gear parking desired signal is no longer responded.
S4: it if travel condition of vehicle is driving status, current vehicle speed is less than preset vehicle speed and active brake fails, controls
Electronic parking executing agency processed brakes vehicle so that vehicle-state is transferred to parked state.
In one embodiment of the invention, as shown in connection with fig. 4, step S4 is specifically included: being transferred to and is stayed in vehicle-state
Before car state, control electronic parking executing agency applies the second social estate system power to wheel to control vehicle braking until being transferred to
Parked state, wherein active brake failure refers to brake pedal and/or brake piping failure.In other words, in certain special circumstances
Under, for example the case where the failure of brake pedal, brake piping, electronic parking dynamic brake can be implemented by being promptly linked into P gear.When
In the case that electronic parking control unit can obtain effective speed, when speed is lower than 5km/h (preset vehicle speed), work as electronic parking
When control unit detects that driver is pushed into the parking signal of P gear, inferior grade parking clamping force (the second grade braking can be applied
Power) directly locking wheel completion emergency braking.
Further, in some instances, as shown in connection with fig. 5, the brake control method example of the vehicle of the embodiment of the present invention
Such as further include: when driver issues the desired signal of P gear parking, although automatic transmission unit has cut off power transmission,
Here considering bad situation is that electronic parking control unit can not obtain vehicle wheel speed signal (such as wheel speed by CAN network
CAN signal is lost or wheel speed sensors damage), that is, can not judge travel condition of vehicle according to vehicle operating parameters at this time.
Since acceleration transducer is solidificated in inside electronic parking controller, failure rate is lower, so using monitoring acceleration herein
Sensor signal is come the sound state of realizing Emergent detection to judge vehicle, such as limping shown in fig. 6 control signal stream signal
Figure.Specific control mode are as follows: control electronic parking executing agency applies the first instantaneous brake force to wheel；According to vehicle
Acceleration judges travel condition of vehicle；If it is driving status, electronic parking executing agency is controlled to wheel and is continuously applied
Two brake force further judge travel condition of vehicle until vehicle parking according to the acceleration of vehicle to brake to vehicle
Control wheel is continuously applied third brake force to keep stationary vehicle afterwards, wherein and the first brake force is less than the second brake force, and second
Brake force is less than third brake force.
In other words, as shown in connection with fig. 6, for example, when electronic parking control unit detect driver P keep off parking signal, at this time
Start electronic parking executing agency, applies a very little dynamic instrumentation brake force F1 (the first brake force) to wheel, if vehicle
Be kept in motion, dynamic instrumentation power here can make vehicle two generation actuate in short-term but it is unlikely cause biggish deceleration, therefore
It is constant by monitoring acceleration sensor signal variation amplitude A, it is determined as that vehicle static stops, electronic parking control unit is then
Apply vehicle parking clamping force (the first estate brake force).If acceleration transducer numerical value change is more than scheduled threshold value, can
It is determined as that vehicle-state is dynamic emergency braking, electronic parking control unit still can not judge specific speed size at this time, out
In the demand of security response P gear parking, electronic parking control unit applies a certain constant safe clamping force calibration value F2 (second
Brake force), safe clamping force calibration value F2 here is able to maintain that vehicle keeps soft deceleration, imitates similar to brake is dubbed
The clamping force of fruit.Whether the numerical value of monitoring acceleration sensor has the change for being restored to certain constant value always in this moderating process
Change behavior B, if it is, judging that vehicle reaches static dead ship condition and then applies complete parking clamping force F3 (the to wheel
Three brake force).If vehicle stopped state confirm before driver by gear lever be pushed into D gear, electronic parking control unit into
Row release operates and exits clamping mode, to guarantee the traveling demand of driver.
To sum up, the method for the above embodiment of the present invention eliminates the execution of automatic transmission parking gear (P gear) relevant latch
Mechanism replaces and applies parking power to wheel using electronic parking, to avoid because of vehicle improper movement after a stoppage (such as
Uneven road, ramp car slipping etc.) and wheel to the reverse power transmission of speed changer is caused to damage automatic transmission associated mechanical zero
Component, while integral vehicle cost is reduced, improve the integrated level of vehicle resources.
The brake control method of vehicle according to an embodiment of the present invention, in the premise for not changing driver's normal driving habit
Under, it realizes that P keeps off parking by electronic parking, realizes speed changer reliably locking, promote vehicle by cancelling P block locking mechanism
Electric control function integrated level reduces vehicle installation, cost of upkeep, while additional extension P keeps off function, improves the driving facility of vehicle
And safety.
Further embodiment of the present invention also discloses a kind of braking control system of vehicle.
Fig. 7 is the structural block diagram of the braking control system of vehicle according to an embodiment of the invention.As shown in fig. 7, root
According to the braking control system 1000 of the vehicle of one embodiment of the invention, comprising: detection module 100, electronic parking executing agency
200 and control module 300.
Wherein, detection module 100 is for detecting shift signal and vehicle operating parameters.Wherein, in a reality of the invention
It applies in example, as shown in connection with fig. 8, vehicle operating parameters for example, speed signal, engine rotational speed signal, ignition signal, braking
Pedal signal, accelerator pedal signal and acceleration signal.
Electronic parking executing agency 200 is used to provide brake force for vehicle.In some instances, electronic parking executing agency
200 be, for example, the mechanism of stand alone type or integrated form.As shown in connection with fig. 8, electronic parking executing agency 200 is for example including left clamp
Executing agency and right clamp executing agency.
Control module 300 is connected with detection module 100 and electronic parking executing agency 200 respectively, in shift signal
When keeping off signal for P, travel condition of vehicle further is judged according to vehicle operating parameters, if travel condition of vehicle is parking shape
State controls electronic parking executing agency then as vehicle and provides brake force to keep stationary vehicle, if travel condition of vehicle is row
State, current vehicle speed are sailed less than preset vehicle speed and active brake fails, then controls electronic parking executing agency to vehicle system
It moves so that vehicle-state is transferred to parked state.
Wherein, in one embodiment of the invention, control module 300 is when travel condition of vehicle is dead ship condition, control
Electronic parking executing agency processed provides brake force for vehicle to keep stationary vehicle, specifically includes: detection vehicle parking position
The angle of gradient controls electronic parking executing agency and applies to wheel if the angle of gradient of vehicle parking position is greater than predetermined angular
The first estate brake force, if the angle of gradient of vehicle parking position is less than or equal to predetermined angular, is controlled with keeping stationary vehicle
Electronic parking executing agency processed applies the second social estate system power to wheel to keep stationary vehicle, wherein the first estate brake force
Second social estate system power.
In one embodiment of the invention, control module 300 is that driving status, current vehicle speed are small in travel condition of vehicle
When preset vehicle speed and active brake failure, control electronic parking executing agency is braked vehicle so that vehicle-state is transferred to
Parked state, comprising: before vehicle-state is transferred to parked state, control electronic parking executing agency applies second etc. to wheel
Grade brake force is to control vehicle braking until being transferred to parked state, wherein active brake failure refers to brake pedal and/or brake pipe
Road failure.
Further, in one embodiment of the invention, control module 300 is also used to perform the following operations:
If not judging travel condition of vehicle according to vehicle operating parameters, electronic parking executing agency is controlled to vehicle
Wheel applies the first instantaneous brake force；Travel condition of vehicle is judged according to the acceleration of vehicle；If it is driving status, control
Electronic parking executing agency is continuously applied the second brake force to wheel to brake to vehicle, and further adding according to vehicle
Velocity estimated travel condition of vehicle is until control wheel is continuously applied third brake force to keep stationary vehicle after vehicle parking.
The braking control system of vehicle according to an embodiment of the present invention, in the premise for not changing driver's normal driving habit
Under, it realizes that P keeps off parking by electronic parking, realizes speed changer reliably locking, promote vehicle by cancelling P block locking mechanism
Electric control function integrated level reduces vehicle installation, cost of upkeep, while additional extension P keeps off function, improves the driving facility of vehicle
And safety.
It should be noted that the specific implementation of the braking control system of the vehicle of the embodiment of the present invention and the present invention are real
The specific implementation for applying the brake control method of the vehicle of example is similar, specifically refers to the description of method part, in order to reduce
Redundancy is not repeated herein.
Further, embodiment of the invention discloses a kind of vehicle, which is provided with as described in above-described embodiment
The braking control system of vehicle.The electric control function integrated level of the vehicle is high, and installation, cost of upkeep are low, while being capable of additional extension P
Function is kept off, driving facility and travel safety are improved.
In addition, other compositions of vehicle according to an embodiment of the present invention and effect are for those of ordinary skill in the art
For be all it is known, in order to reduce redundancy, do not repeat them here.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of brake control method of vehicle, which comprises the following steps:
Obtain shift signal and vehicle operating parameters；
If the shift signal is that P keeps off signal, travel condition of vehicle further is judged according to the vehicle operating parameters；
If the travel condition of vehicle is dead ship condition, electronic parking executing agency is controlled as vehicle and provides brake force to protect
Hold stationary vehicle；
If the travel condition of vehicle is driving status, current vehicle speed is less than preset vehicle speed and active brake fails, control
The electronic parking executing agency is braked to vehicle so that the vehicle-state is transferred to parked state；
If not judging travel condition of vehicle according to the vehicle operating parameters, the electronic parking executing agency is controlled
Apply the first instantaneous brake force to wheel；
The travel condition of vehicle is judged according to the acceleration of vehicle；
If it is driving status, the electronic parking executing agency is controlled to the wheel and is continuously applied the second brake force with right
Vehicle is braked, and further judges the travel condition of vehicle until controlling after the vehicle parking according to the acceleration of vehicle
It makes the electronic parking executing agency and is continuously applied third brake force to the wheel to keep stationary vehicle, wherein the first system
Power is less than third brake force less than the second brake force, the second brake force.
2. the brake control method of vehicle according to claim 1, which is characterized in that if the travel condition of vehicle is
Dead ship condition controls electronic parking executing agency then as vehicle and provides brake force to keep stationary vehicle, specifically includes:
Detect the angle of gradient of vehicle parking position；
If the angle of gradient of the vehicle parking position is greater than predetermined angular, controls electronic parking executing agency and apply to wheel
The first estate brake force is to keep stationary vehicle；
If the angle of gradient of the vehicle parking position is less than or equal to the predetermined angular, electronic parking executing agency is controlled
Apply the second social estate system power to wheel to keep stationary vehicle, wherein the first estate brake force is greater than described second etc.
Grade brake force.
3. the brake control method of vehicle according to claim 2, which is characterized in that if the travel condition of vehicle is
Driving status, current vehicle speed are less than preset vehicle speed and active brake fails, then control the electronic parking executing agency to vehicle
It is braked so that the vehicle-state is transferred to parked state, is specifically included:
Before the vehicle-state is transferred to the parked state, controls the electronic parking executing agency and apply to the wheel
Second social estate system power is to control vehicle braking until being transferred to the parked state, wherein the active brake failure refers to braking
Pedal and/or brake piping failure.
4. the brake control method of vehicle according to claim 1-3, which is characterized in that the vehicle operation ginseng
Number includes: speed signal, engine rotational speed signal, ignition signal, brake pedal signal, accelerator pedal signal.
5. a kind of braking control system of vehicle characterized by comprising
Detection module, for detecting shift signal and vehicle operating parameters；
Electronic parking executing agency, for providing brake force for vehicle；With
Control module, the control module are connected with the detection module and the electronic parking executing agency respectively, are used for
When the shift signal is that P keeps off signal, travel condition of vehicle further is judged according to the vehicle operating parameters, if the vehicle
Operating status is dead ship condition, then controls electronic parking executing agency as vehicle and provide brake force to keep stationary vehicle, such as
Travel condition of vehicle described in fruit is driving status, current vehicle speed is less than preset vehicle speed and active brake fails, then controls the electricity
Sub- control device brakes vehicle so that the vehicle-state is transferred to parked state, and the control module is also used to work as
When not judging travel condition of vehicle according to the vehicle operating parameters, controls the electronic parking executing agency and applied to wheel
Add the first instantaneous brake force, and the travel condition of vehicle is judged according to the acceleration of vehicle, if it is the driving status,
It then controls the electronic parking executing agency and is continuously applied the second brake force to the wheel to brake to vehicle, go forward side by side one
Step judges the travel condition of vehicle according to the acceleration of vehicle and executes until controlling the electronic parking after the vehicle parking
Mechanism is continuously applied third brake force to the wheel to keep stationary vehicle, wherein the first brake force less than the second brake force,
Second brake force is less than third brake force.
6. the braking control system of vehicle according to claim 5, which is characterized in that the control module is run in vehicle
When state is dead ship condition, electronic parking executing agency is controlled as vehicle and provides brake force to keep stationary vehicle, comprising: detection
The angle of gradient of vehicle parking position controls electronic parking if the angle of gradient of the vehicle parking position is greater than predetermined angular
Executing agency applies the first estate brake force to wheel to keep stationary vehicle, if the angle of gradient of the vehicle parking position is small
In or equal to the predetermined angular, then electronic parking executing agency is controlled to wheel and applies the second social estate system power to keep vehicle
It is static, wherein the first estate brake force is greater than the second social estate system power.
7. the braking control system of vehicle according to claim 6, which is characterized in that the control module is run in vehicle
State is driving status, current vehicle speed less than preset vehicle speed and when active brake fails, and controls the electronic parking executing agency
Vehicle is braked so that the vehicle-state is transferred to the parked state, comprising: be transferred to described stay in the vehicle-state
Before car state, the electronic parking executing agency is controlled to the wheel and applies the second social estate system power to control vehicle braking
Until being transferred to the parked state, wherein the active brake failure refers to brake pedal and/or brake piping failure.
8. a kind of vehicle, which is characterized in that the braking control system just like the described in any item vehicles of claim 5-7 is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510632089.8A CN106553628B (en) | 2015-09-29 | 2015-09-29 | Brake control method, system and the vehicle of vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510632089.8A CN106553628B (en) | 2015-09-29 | 2015-09-29 | Brake control method, system and the vehicle of vehicle |
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| CN106553628A CN106553628A (en) | 2017-04-05 |
| CN106553628B true CN106553628B (en) | 2019-04-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107097783A (en) * | 2017-04-10 | 2017-08-29 | 广州汽车集团股份有限公司 | P keeps off parking control method and system and the vehicle with the system |
| CN109421737A (en) * | 2017-08-29 | 2019-03-05 | 长城汽车股份有限公司 | Vehicle gear switching method and device |
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