CN106394522A - Parking (P) automatic antilock system and control method - Google Patents
Parking (P) automatic antilock system and control method Download PDFInfo
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- CN106394522A CN106394522A CN201610877341.6A CN201610877341A CN106394522A CN 106394522 A CN106394522 A CN 106394522A CN 201610877341 A CN201610877341 A CN 201610877341A CN 106394522 A CN106394522 A CN 106394522A
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- Prior art keywords
- gear
- parking
- vehicle
- brake
- locking
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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
- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake 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
- 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
- B60T8/24—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 vehicle inclination or change of direction, e.g. negotiating bends
- B60T8/245—Longitudinal vehicle inclination
-
- 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
- B60T8/58—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 responsive to speed and another condition or to plural speed conditions
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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
- B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
- B60T2201/03—Brake assistants
-
- 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
- B60T2201/04—Hill descent control
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a parking (P) automatic antilock system which comprises a driver operation system, a vehicle body information acquisition system, a vehicle control system, a service braking system and a parking braking system, wherein when the vehicle control system judges that a vehicle is braked and static on a hill according to information transmitted by the driver operation system and the vehicle body information acquisition system and that a shifter lever of the vehicle is shifted to P from a non-P position, a parking (P) automatic antilock function is started; and the vehicle control system controls the service braking system to retain the braking force and controls the parking braking system to park the vehicle. The system can realize linkage of hill identification, pressure retaining, parking braking and the like and prevent sliding of the vehicle shifted to P on the hill, so that the phenomenon of parking (P) lock caused by parking (P) sliding on the hill is avoided. The invention further provides a parking (P) automatic antilock control method.
Description
Technical field
The present invention relates to technical field of vehicle safety, more particularly, to a kind of P gear parking automatic anti-locking system and controlling party
Method.
Background technology
Automatic parking system (AutoHold) is a kind of function of automatically pulling the hand brake for you, and this function can be in electromotor
Operating condition, driver fasten seat belts and driver side door shutting in the case of manually booted by driver, this function opens
After dynamic, if driver's brake pedal makes vehicle stop, ESC (electronic stability program) controller passes through automatic guarantor
Pressure makes before and after's brake keep brake force, and meanwhile, car body controller drives braking taillight to light, if intervals (such as 3
Minute) rear vehicle still static, then ESC controller to parking brake send parking instruction, request open parking brake,
By parking brake mechanically locked vehicle, and car body controller then lights the parking in instrument after the completion of parking
Display lamp.
Ramp starts aid system (HHC) and is primarily directed to vehicle advance upward slope and reversing upward slope and designs, and its core is thought
Brake force delay cutoff after wanting to get off the brakes it is ensured that driver get off the brakes to step on the gas during automobile remain certain
Brake force, even if releasing of brake is not stepped on the gas, brake force can also keep the regular hour, thus preventing car slipping.
Automatic parking system and ramp start-up assist system are the practical system of current vehicle, but should
In place of the equal Shortcomings of two kinds of systems, for example：The function activation precondition of automatic parking system is more, complex operation, this work(
Driver can be needed to pass through to switch and artificially activate it is impossible to automatically turn on, this function will not be identified to the gradient, on level road
Can trigger, and, this functional requirement electromagnetic valve dwell time is longer, therefore higher to hardware requirement；Dynamic auxiliary system is played in ramp
System, due to needing to keep the time of brake force shorter, usually 2～3 seconds, therefore, requires not being very to the sealing property of its valve body
Height, cause system cannot pressurize for a long time, and this function can not with electronic parking system (electronics parking brake) linkage it is impossible to
Reliable parking is completed on ramp, and, this function is only in upward slope D gear (forward gear) and descending R gear (reversing gear) Shi Caihui quilt
Activation, the suitability is not wide.
Content of the invention
In view of this, the invention provides a kind of P keeps off parking automatic anti-locking system and control method, system and method
The linkage of ramp identification, pressure holding and parking braking etc. can be realized, when preventing vehicle that P gear (parking gear) is linked on ramp
Car slipping, thus avoid the P gear deadlock phenomenon keeping off car slipping and causing because of P on ramp.
A kind of P keeps off parking automatic anti-locking system, including operator system, vehicle body information acquisition system, vehicle control
System processed, service braking system and parking braking system, when described vehicle control system according to described operator system and
The information of described vehicle body information acquisition system transmission judges that vehicle is braked static on the slope, and vehicle is linked into P from non-P gear and keeps off
When, P keeps off parking automatic anti-locking function on, and described vehicle control system controls described service braking system to keep brake force,
And control described parking braking system to carry out parking.
Further, described operator system includes brake pedal, and described vehicle body information acquisition system includes the gradient
Sensor, wheel speed sensors and gearbox control, described vehicle control system includes vehicle body stability controller, described driving
Brakes includes front brake and rear brake, and described parking braking system includes parking brake, when described vehicle body is stable
Property controller is according to described Slope Transducer, described brake pedal, described wheel speed sensors and described gearbox control
Signal judge vehicle brake on the slope static, and vehicle from non-P gear be linked into P gear when, described vehicle body stability controller passes through
Wheel cylinder automatic pressure-maintaining makes described front brake and described rear brake keep brake force, and controls described parking brake to be stayed
Car.
Further, when according to the signal of described Slope Transducer, described vehicle body stability controller judges that road gradient is big
In or be equal to a preset value, judge that Current vehicle is braked according to the signal of described brake pedal, according to described wheel speed biography
The signal of sensor judges that current vehicle speed is zero, judges that vehicle is linked into P gear by non-P gear according to the signal of described gearbox control
When, described vehicle body stability controller or the described gearbox control described P of activation keep off parking automatic anti-locking function.
Further, described vehicle body stability controller is according to the target gear signal or current of described gearbox control
Gear signal judges that vehicle is linked into P gear by non-P gear.
Further, described P gear parking automatic anti-locking system also includes police instruction system, described police instruction system
Including braking taillight and instrument, described vehicle control system also includes car body controller, and described car body controller is in described vehicle body
Stability controller makes described front brake and described rear brake keep driving braking during brake force by wheel cylinder automatic pressure-maintaining
Taillight is lighted, and lights parking display lamp after parking terminates in instrument.
Further, described operator system includes ignition switch, and described vehicle control system is at ignition switch
Judge whether vehicle is braked on the slope in the case of ON shelves static.
A kind of P keeps off parking automatic anti-locking control method, comprises the steps：Judge to brake on vehicle slope whether quiet
Stop, and whether vehicle is linked into P gear from non-P gear；If vehicle brake on the slope static, and vehicle from non-P gear be linked into P gear, start P
Gear parking automatic anti-locking function；After P gear parking automatic anti-locking function on, service braking system is controlled to keep braking
Power, and control parking braking system to carry out parking.
Further, judge whether vehicle brakes static, and the step whether vehicle is linked into P gear from non-P gear on the slope
Including：Judge whether road gradient is more than or equal to a preset value；Judge whether driver has carried out braking and judging current vehicle
Whether speed is zero；Judge whether the current shift of vehicle or target gear there occurs change, if be changed into P shelves from non-P shelves.
Further, after P gear parking automatic anti-locking function on, parking braking system is controlled to carry out the action of parking
Keep the action of brake force to carry out with controlling service braking system simultaneously.
Further, P gear parking automatic anti-locking function is activated by vehicle body stability controller or gearbox control.
The linkage that the present invention is identified by ramp, pressure keeps and between the system such as parking braking, realizes hanging on car ramp
Car slipping will not be produced, after solution vehicle is linked into P gear on ramp, car load slips under gravity afterwards, leads to car load when entering P gear
Part action of gravity on P block locking mechanism, produce that P block card is stagnant, it is excessive and be difficult to the phenomenon extracting to release P gear noise.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, and in order to allow the above and other objects, features and advantages of the present invention can
Become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description
Fig. 1 keeps off the structured flowchart of parking automatic anti-locking system for the P that the present invention provides.
The flow chart that Fig. 2 keeps off the first embodiment of parking automatic anti-locking control method for the P that the present invention provides.
The flow chart that Fig. 3 keeps off the second embodiment of parking automatic anti-locking control method for the P that the present invention provides.
Specific embodiment
For further illustrating that the present invention is to reach technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, as follows to the detailed description of the invention.
First embodiment
Refer to Fig. 1, the P gear parking automatic anti-locking system of first embodiment of the invention include operator system,
Vehicle body information acquisition system, vehicle control system, service braking system, parking braking system and police instruction system.
Wherein, operator system includes ignition switch 1 and brake pedal 3.Vehicle body information acquisition system includes the gradient
Sensor 2, wheel speed sensors 4 and TCU (gearbox control) 5, vehicle control system includes ESC controller (vehicle body stability
Controller) 6 and BCM (car body controllers) 7, service braking system includes front brake 8 and rear brake 9, parking braking system
Including parking brake 10, police instruction system includes braking taillight 11 and instrument 12.
Specifically, ignition switch 1 is connected with CAN 13 by holding wire, and it can be by holding wire to CAN 13
Upload the gear information residing for ignition switch 1, make car body controller 7 can control automobile according to the gear information of ignition switch 1
The "on" position of upper respective element.In the present embodiment, ignition switch 1 includes tetra- gears of START, ON, ACC, LOCK, its
In, LOCK shelves are used for locking direction disk, and ACC shelves are used for opening part electric elements, Source Music etc., and ON shelves are connected all in car
Electric elements, just in this position in vehicle travel process, START shelves are used for starting position igniting.
Slope Transducer 2 is connected with ESC controller 6 by holding wire, and it is used for identifying road grade, and by grade signal
Pass to ESC controller 6.
Brake pedal 3 is connected with ESC controller 6 by holding wire, and it is used for stepping in driver or decontrols brake pedal 3
When transmit corresponding signal to ESC controller 6.
Wheel speed sensors 4 are connected with ESC controller 6 by holding wire, and it is used for gathering wheel speed signal, and by wheel speed signal
Pass to ESC controller 6.
Gearbox control 5 is connected with CAN 13 by holding wire, and it can be by holding wire in CAN 13
Pass the signal such as current shift, target gear and change speed gear box rotating speed it is also possible to be captured required by CAN 13 by holding wire
Signal.
Car body controller 7 is passed through holding wire and is connected with braking taillight 11, and is connected with ESC controller 6 by CAN.
Car body controller 7 is used for obtaining signal by CAN 13 or ESC controller 6, and controls the electricity on vehicle according to the signal obtaining
Gas element, the work of for example various car lights, alarm, radio, vehicle window, wiper, meter lamp etc..
Front brake 8 is connected with ESC controller 6 by brake piping with rear brake 9, for according to ESC controller 6
Control signal is braked to vehicle.
Parking brake 10 is connected with ESC controller 6 by holding wire, for the control signal pair according to ESC controller 6
Vehicle carries out mechanical parking.
Instrument 12 is connected with CAN 13 by holding wire, and it can obtain various signals by CAN 13, and root
Open corresponding display lamp, or parameter or the state that corresponding device is shown on corresponding instrument according to the signal obtaining.
ESC controller 6 passes through holding wire and/or CAN 13 and Slope Transducer 2, brake pedal 3, wheel speed sensors
4th, gearbox control 5, car body controller 7, parking brake 10 and braking taillight 11 signal connect, by brake piping with
Front brake 8 and rear brake 9 connect, and it is used for being done according to the signal of Slope Transducer 2, brake pedal 3, wheel speed sensors 4
Go out to judge, to control front brake 8, rear brake 9 and parking brake 10 to carry out system pressurize according to judged result or to stay
Car, and deliver a signal to car body controller 7, braking taillight 11 or instrument 12 are lighted according to the signal receiving by car body controller 7
On display lamp.
As shown in Fig. 2 P of the present invention keeps off the control method of parking automatic anti-locking system, and (i.e. the P gear parking of the present invention is automatic
Anti-locking control method) comprise the steps：
Step one, judge whether the ignition switch 1 of operator system is in ON shelves, that is, whether ignition switch 1 is in
Opening；Judge ignition switch 1 whether to be in during ON shelves to be mainly in during different gear according to ignition switch 1 to reach CAN total
The electric potential signal of line 13 is judging, if the current potential of the corresponding ON shelves of current electric potential signal that ESC controller 6 is obtained by CAN 13,
Then think that ignition switch 1 is in ON shelves.If ignition switch 1 is in ON shelves, enter step 2.
Step 2, judge whether vehicle is on slope.By ESC controller 6 when judging whether vehicle is on slope
Signal according to Slope Transducer 2 to judge, if ESC controller 6 according to the signal of Slope Transducer 2 judge road gradient be more than or
Equal to a preset value (in the present embodiment for 5%, this numerical value can also be arranged as required to) then it is assumed that vehicle is currently at tiltedly
On slope.If vehicle is currently on slope, enter step 3.
Step 3, judge whether vehicle is in non-P gear.Judge vehicle gear when mainly by ESC controller 6 according to speed change
The signal of case controller 5 is judging, if the corresponding gear of signal of gearbox control 5 transmission is non-P gear then it is assumed that at vehicle
In non-P gear.If vehicle is in non-P gear, enter step 4.
Step 4, judge whether brake pedal 3 makes stationary vehicle to driver.When driver's brake pedal 3,
Corresponding signal can be sent to ESC controller 6 and CAN 13, ESC controller 6 receives this signal and thinks that driver steps on
Descend brake pedal 3, then judged whether current vehicle speed is zero according to the signal of wheel speed sensors 4, if according to wheel speed sensors 4
Signal judge that current vehicle speed is zero then it is assumed that braking successfully, vehicle remains static.If driver's brake pedal 3
Make stationary vehicle, then enter step 5.
Whether step 5, the current shift judging vehicle or target gear change, if be linked into P gear from non-P gear.This
One step is mainly judged according to the signal that gearbox control 5 transmits by ESC controller 6, if the current letter of gearbox control 5
Number or echo signal from non-P gear be changed into P gear then it is assumed that vehicle by non-P gear be linked into P gear.If driver's brake pedal makes car
Static, and vehicle is linked into P gear from non-P gear, then enter step 6.
Step 6, sent function activation signal by ESC controller 6, start P gear parking automatic anti-locking function.If P gear is stayed
Car automatic anti-locking function on, enters step 7.
Step 7, ESC controller 6 make front brake 8 and the rear brake 9 of service braking system by wheel cylinder automatic pressure-maintaining
Keep brake force, make vehicle remains stationary, meanwhile, car body controller 7 drives braking taillight 11 to light, and, ESC controller 6
Send request to the parking brake 10 of parking braking system, parking brake 10 is opened in request simultaneously.
Step 8, parking brake 10 carry out mechanical parking according to the request of ESC controller 6, and to ESC controller 6 He
CAN 13 feeds back parking result, and ESC controller 6 controls service braking system to terminate packing state, vehicle body after parking terminates
Controller 7 according to the parking display lamp lighted by the signal that CAN 13 obtains in instrument 12 and extinguishes braking taillight 11, vehicle
It is maintained on ramp, realize P gear parking automatic anti-locking function.
According to above-described embodiment, the P gear parking automatic anti-locking system of the present invention is identified by ramp, pressure keeps
Linkage and between the system such as parking braking, when making vehicle be linked into P gear on ramp, vehicle is in mechanical parked state without producing
Raw car slipping, thus after avoiding vehicle to be linked into P gear on ramp, car load slips under gravity afterwards, leads to partly weighing of car load
Power acts on P block locking mechanism, and generation P block card is stagnant, it is excessive to release P gear noise and is difficult to the phenomenon extracting.
It is further to note that in the P gear parking automatic anti-locking control method of the present invention, between some steps
Context is not limited to the context described in embodiment, and it can also carry out suitable adjustment, for example, judge that vehicle is
No it is on slope, judges whether vehicle is in non-P gear and judges whether brake pedal makes stationary vehicle to driver
Step, in other embodiments of the invention it is also possible to judge that when driver's brake pedal makes stationary vehicle vehicle is
No be on slope and whether vehicle is in non-P gear, in addition, judging whether vehicle is in the step that non-P keeps off and can also omit,
And directly determine whether vehicle is linked into P gear from non-P gear by judging the change of current gear or target gear.
Second embodiment
It is automatically anti-lock with the P gear parking of first embodiment that the P of second embodiment of the invention keeps off parking automatic anti-locking system
The system architecture of dead system is identical, and it also includes operator system, vehicle body information acquisition system, wagon control system
System, service braking system, parking braking system and police instruction system.Operator system includes ignition switch 1 and braking
Pedal 3.Vehicle body information acquisition system includes Slope Transducer 2, wheel speed sensors 4 and TCU (gearbox control) 5, vehicle control
System processed includes ESC controller (vehicle body stability controller) 6 and BCM (car body controller) 7, and service braking system includes front system
Dynamic device 8 and rear brake 9, parking braking system includes parking brake 10, and police instruction system includes braking taillight 11 and instrument
Table 12.And, the function of each ingredient of this P gear parking automatic anti-locking system and annexation are basic with first embodiment
Identical, with the difference of first embodiment, the second embodiment of the present invention is that P keeps off the control of parking automatic anti-locking system
Method (i.e. P gear parking automatic anti-locking control method).
As shown in figure 3, the P gear parking automatic anti-locking control method of the present embodiment comprises the steps：
Step one, judge whether the ignition switch 1 of operator system is in ON shelves, that is, whether ignition switch 1 is in
Opening；Judge ignition switch 1 whether to be in during ON shelves to be mainly in during different gear according to ignition switch 1 to reach CAN total
The electric potential signal of line 13 is judging, if the current potential of the corresponding ON shelves of current electric potential signal that ESC controller 6 is obtained by CAN 13,
Then think that ignition switch 1 is in ON shelves.If ignition switch 1 is in ON shelves, enter step 2.
Step 2, judge whether vehicle is on slope.By ESC controller 6 when judging whether vehicle is on slope
Signal according to Slope Transducer 2 to judge, if ESC controller 6 according to the signal of Slope Transducer 2 judge road gradient be more than or
Equal to a preset value (in the present embodiment for 5%, this numerical value can also be arranged as required to) then it is assumed that vehicle is currently at tiltedly
On slope.If vehicle is currently on slope, enter step 3.
Step 3, judge whether vehicle is in non-P gear.Judge vehicle gear when mainly by ESC controller 6 according to speed change
The signal of case controller 5 is judging, if the corresponding gear of signal of gearbox control 5 transmission is non-P gear then it is assumed that at vehicle
In non-P gear.If vehicle is in non-P gear, enter step 4.
Step 4, judge whether brake pedal 3 makes stationary vehicle to driver.When driver's brake pedal 3,
Corresponding signal can be sent to ESC controller 6 and CAN 13, ESC controller 6 receives this signal and thinks that driver steps on
Descend brake pedal 3, then judged whether current vehicle speed is zero according to the signal of wheel speed sensors 4, if according to wheel speed sensors 4
Signal judge that current vehicle speed is zero then it is assumed that braking successfully, vehicle remains static.If driver's brake pedal 3
Make stationary vehicle, then enter step 5.
Whether step 5, the current shift judging vehicle or target gear change, if be linked into P gear from non-P gear.This
One step is mainly judged according to the signal that gearbox control 5 transmits by ESC controller 6, if the current letter of gearbox control 5
Number or echo signal from non-P gear be changed into P gear then it is assumed that vehicle by non-P gear be linked into P gear.If ESC controller 6 judges that driver steps on
Lower brake pedal makes stationary vehicle, and vehicle is linked into P gear from non-P gear, then enter step 6.
Step 6, sent function activation signal by gearbox control 5, start P gear parking automatic anti-locking function.At this
In step, gearbox control 5 sends function activation signal according to the judged result of the step 5 obtaining from CAN 13, if P
Gear parking automatic anti-locking function on, enters step 7.
Step 7, ESC controller 6 make front brake 8 and the rear brake 9 of service braking system by wheel cylinder automatic pressure-maintaining
Keep brake force, make vehicle remains stationary, meanwhile, car body controller 7 drives braking taillight 11 to light, and, ESC controller 6
Send request to the parking brake 10 of parking braking system, parking brake 10 is opened in request simultaneously.
Step 8, parking brake 10 carry out mechanical parking according to the request of ESC controller 6, and to ESC controller 6 He
CAN 13 feeds back parking result, and ESC controller 6 controls service braking system to terminate packing state, vehicle body after parking terminates
Controller 7 according to the parking display lamp lighted by the signal that CAN 13 obtains in instrument 12 and extinguishes braking taillight 11, vehicle
It is maintained on ramp, realize P gear parking automatic anti-locking function.
By narration above it is known that the P gear parking automatic anti-locking system of the present invention is identified by ramp, pressure is protected
Hold the linkage and between the system such as parking braking, when making vehicle that P gear to be linked on ramp vehicle be in mechanical parked state without
Produce car slipping, thus after avoiding vehicle to be linked into P gear on ramp, car load slips under gravity afterwards, leads to the part of car load
On P block locking mechanism, generation P block card is stagnant, it is excessive to release P gear noise and is difficult to the phenomenon extracting for action of gravity.
The P gear parking automatic anti-locking system of the present invention is had the advantage that compared with automatic parking system：
1. pass through Slope Transducer, the gradient can be identified, it is to avoid this function is triggered on level road；
2. use new control logic, can automatically execute, without manual operation；
3., while activation system pressurize, synchronous driving parking brake is opened, and shortens dwell time, dwell time
Need not be very long, greatly reduce the requirement to valve seal for the system, save hardware cost.
The P gear parking automatic anti-locking system of the present invention is had the advantage that with ramp start-up assist system：
1. use new control logic, can be linked with electronic parking system (electronics parking brake), drive electronic parking
Automatically execution parking, safe and reliable；
2. cover all operating modes being linked into P gear from non-P gear of ascents and descents.
The above, be only presently preferred embodiments of the present invention, not the present invention is made with any pro forma restriction, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any is familiar with this professional technology people
Member, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above make a little change or modification
For the Equivalent embodiments of equivalent variations, as long as being without departing from technical solution of the present invention content, according to the technical spirit pair of the present invention
Any simple modification, equivalent variations and modification that above example is made, all still fall within the range of technical solution of the present invention.
Claims (10)
1. a kind of P keeps off parking automatic anti-locking system, including operator system, vehicle body information acquisition system, wagon control
System, service braking system and parking braking system it is characterised in that：When described vehicle control system is grasped according to described driver
The information making system and the transmission of described vehicle body information acquisition system judges that vehicle is braked static on the slope, and vehicle keeps off from non-P
When being linked into P gear, P keeps off parking automatic anti-locking function on, and described vehicle control system controls described service braking system to keep
Brake force, and control described parking braking system to carry out parking.
2. P according to claim 1 gear parking automatic anti-locking system it is characterised in that：Described operator system
Including brake pedal (3), described vehicle body information acquisition system includes Slope Transducer (2), wheel speed sensors (4) and change speed gear box control
Device (5) processed, described vehicle control system includes vehicle body stability controller (6), and described service braking system includes front brake
(8) and rear brake (9), described parking braking system includes parking brake (10), when described vehicle body stability controller (6)
According to described Slope Transducer (2), described brake pedal (3), described wheel speed sensors (4) and described gearbox control
(5) signal judge vehicle brake on the slope static, and vehicle from non-P gear be linked into P gear when, described vehicle body stability controller
(6) make described front brake (8) and described rear brake (9) keep brake force by wheel cylinder automatic pressure-maintaining, and stay described in controlling
Car brake (10) carries out parking.
3. P according to claim 2 gear parking automatic anti-locking system it is characterised in that：When described vehicle body stability control
According to the signal of described Slope Transducer (2), device (6) processed judges that road gradient is more than or equal to a preset value, according to described braking
The signal of pedal (3) judges that Current vehicle is braked, and judges that current vehicle speed is according to the signal of described wheel speed sensors (4)
Zero, when judging that vehicle is linked into P gear by non-P gear according to the signal of described gearbox control (5), described vehicle body stability controller
Or described gearbox control (5) the described P of activation keeps off parking automatic anti-locking function (6).
4. according to Claims 2 or 3 P gear parking automatic anti-locking system it is characterised in that：Described vehicle body stability control
According to the target gear signal of described gearbox control (5) or current gear signal, device (6) processed judges that vehicle is linked into by non-P gear
P keeps off.
5. P according to claim 2 gear parking automatic anti-locking system it is characterised in that：Described P gear parking is automatically anti-lock
Dead system also includes police instruction system, and described police instruction system includes braking taillight (11) and instrument (12), described vehicle
Control system also includes car body controller (7), and described car body controller (7) passes through wheel in described vehicle body stability controller (6)
Cylinder automatic pressure-maintaining makes described front brake (8) and described rear brake (9) keep driving braking taillight (11) to light during brake force,
And light parking display lamp in instrument (12) after parking terminates.
6. P according to claim 1 gear parking automatic anti-locking system it is characterised in that：Described operator system
Including ignition switch (1), whether described vehicle control system judges vehicle oblique in the case that ignition switch (1) is in ON shelves
Brake static on slope.
7. a kind of P gear parking automatic anti-locking control method is it is characterised in that it comprises the steps：
Judge to brake on vehicle slope whether static, and whether vehicle is linked into P gear from non-P gear；
If vehicle brake on the slope static, and vehicle from non-P gear be linked into P gear, activation P gear parking automatic anti-locking function；
After P gear parking automatic anti-locking function activation, control service braking system to keep brake force, and control parking braking system
System carries out parking.
8. P according to claim 7 gear parking automatic anti-locking control method it is characterised in that：Judge that whether vehicle exists
Brake static on slope, and the step whether vehicle is linked into P gear from non-P gear includes：Judge whether road gradient is more than or equal to
One preset value；Judge whether driver has carried out braking and judge whether current vehicle speed is zero；Judge vehicle current shift or
Whether target gear there occurs change, if be changed into P shelves from non-P shelves.
9. P according to claim 7 gear parking automatic anti-locking control method it is characterised in that：When P gear parking is prevented automatically
After locking function starts, the action that parking braking system carries out parking is controlled to keep the dynamic of brake force with controlling service braking system
Carry out simultaneously.
10. P according to claim 7 gear parking automatic anti-locking control method it is characterised in that：P gear parking is prevented automatically
Locking function is activated by vehicle body stability controller (6) or gearbox control (5).
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| CN201610877341.6A CN106394522A (en) | 2016-10-08 | 2016-10-08 | Parking (P) automatic antilock system and control method |
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| CN201610877341.6A CN106394522A (en) | 2016-10-08 | 2016-10-08 | Parking (P) automatic antilock system and control method |
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| CN201610877341.6A Pending CN106394522A (en) | 2016-10-08 | 2016-10-08 | Parking (P) automatic antilock system and control method |
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Application publication date: 20170215 |