CN104590252B - A kind of rollback control method based on stabilizing control system - Google Patents
A kind of rollback control method based on stabilizing control system Download PDFInfo
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- CN104590252B CN104590252B CN201310531148.3A CN201310531148A CN104590252B CN 104590252 B CN104590252 B CN 104590252B CN 201310531148 A CN201310531148 A CN 201310531148A CN 104590252 B CN104590252 B CN 104590252B
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- rollback
- vehicle
- control method
- control system
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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
- 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
-
- 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
-
- 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
- B60T2250/00—Monitoring, detecting, estimating vehicle conditions
- B60T2250/04—Vehicle reference speed; Vehicle body speed
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention belongs to brake system of car fields, provide a kind of based on stability contorting（SCS）Rollback control method.In this method, vehicle is at least meeting following two conditions for the moment, the stabilizing control system during uphill starting（SCS）Control makes the HSA function modules be stopped and activates the HRC function modules to prevent the rollback speed of vehicle more than maximum allowable rollback speed；Wherein, described two conditions are：Condition one, uphill starting failure and brake pedal are not operated braking, condition two, and overheating fault occurs for gearbox；Wherein, actively to the wheel braking of the vehicle when HRC function modules are activated.The control method can be effectively prevented from rollback accident.
Description
Technical field
The invention belongs to brake system of car fields, are related to a kind of based on stabilizing control system（Stability Control
System, SCS）Rollback control method.
Background technology
The stabilizing control system of vehicle（SCS）It is developed so far, it is already possible to realize that anti-lock, polling power controlling, dynamic are steady
Fixed control（Dynamic Stability Control, DSC）, uphill starting auxiliary（Hill-start Assist, HSA）, it is tight
The functions such as anxious braking auxiliary.Wherein, Dynamic Stability Control can effectively prevent tyre slip under various surface conditions and make
At vehicle whipping, sideslip and dynamic property are bad phenomena such as, greatly improve drive safety, stability and dynamic property.
In daily life, due to improper etc. to vehicle operating, rollback often occurs on ramp for vehicle, causes
Collision accident causes object damage even personal damage.And existing dynamic stability control system vehicle rollback is had no it is any corresponding
Control strategy.
Also, with double clutch gearbox（DCT）The gradually maturation of technology, DCT is because of its superior economical peace
Suitable shift performance is favored by many main engine plants.But limited by its hardware design, DCT has relatively easy occur
The shortcomings that overheating fault.If during uphill starting when upper generation overheating fault, vehicle will run out of steam, and be easy to happen down
It slips, there are very big security risks.
Invention content
It is an object of the present invention to provide rollback protection when DCT is overheated.
Another object of the present invention is to prevent that rollback accident occurs because of misoperation.
To realize that object above or other purposes, the present invention provide a kind of based on stabilizing control system（SCS）Rollback
Control method, wherein the stabilizing control system（SCS）It is assisted with uphill starting（HSA）Function module；It is characterized in that,
The stabilizing control system（SCS）Also there is the control of ramp rollback（HRC）Function module；Vehicle under upward slope working condition exists
During uphill starting, at least meeting following two conditions for the moment, the stabilizing control system（SCS）Make the HSA work(
Energy module from service simultaneously activates the HRC function modules to prevent the rollback speed of vehicle more than maximum allowable rollback speed；
Wherein, described two conditions are：
Condition one, uphill starting fails and brake pedal is not operated braking,
Overheating fault occurs for condition two, gearbox；
Wherein, actively to the wheel system of the vehicle under upward slope working condition when the HRC function modules are activated
It is dynamic.
According to the rollback control method of one embodiment of the invention, wherein before judging whether to meet described two conditions,
It is further comprising the steps of：
Based on ramp signal, gear signal, speed signal, output rotational axis direction and the brake pedal signal at least acquired
To determine that vehicle is in uphill starting state；And
HSA function modules are by the stabilizing control system（SCS）Activate work to carry out uphill starting control.
Preferably, in the case where smooth starting or brake pedal are stepped on braking again, the HSA function modules are stopped
Only work.
In the rollback control method of foregoing description embodiment, the stabilizing control system（SCS）It is held from the braking of vehicle
Row mechanism acquires the ramp signal and speed signal, the stabilizing control system（SCS）It is adopted from the brake pedal apparatus of vehicle
Collect the brake pedal signal, the stabilizing control system（SCS）From the gear box control unit of vehicle（TCU）At least acquire institute
State gear signal.
In the rollback control method of foregoing description embodiment, the stabilizing control system（SCS）Also adopted from the TCU of vehicle
Collect clutch state signal, output rotational axis direction signal.
In the rollback control method of foregoing description embodiment, the torque of vehicle output passes through control unit of engine
（EMS）It acquires and is sent to the stabilizing control system（SCS）.
Specifically, the uphill starting refers to unsuccessfully loosening the brake and the HSA function modules are activated work
Predetermined amount of time in, vehicle does not overcome the torque that wheel exports the reversed torsion caused by gravity of the vehicle on ramp
Square.
Optionally, ranging from 1.5 seconds to 2 seconds of the predetermined amount of time.
According to the rollback control method of further embodiment of this invention, wherein during the wheel braking, increase to wheel
Brake apparatus brake pressure, until vehicle rollback speed be less than or equal to maximum allowable rollback speed.
Optionally, ranging from 1.6 to 10 kilometers/hour of the maximum allowable rollback speed.
Preferably, in the case where smooth starting or brake pedal are stepped on braking again, the HRC function modules are stopped
Only work.
In the rollback control method of foregoing description any embodiment, optionally, the gearbox is double clutch speed change
Case（DCT）Or other kinds of automatic gear-box（AT）.
The solution have the advantages that rollback control method of the invention can be in vehicle because of misoperation or DCT mistakes
When rollback caused by thermal fault, vehicle rollback speed is controlled, plays to be alleviated or avoided and collides thing caused by rollback
Therefore reinforce ramp driving safety.
Description of the drawings
From the following detailed description in conjunction with attached drawing, it will keep the above and other purpose of the present invention and advantage more complete
It is clear, wherein same or analogous element, which is adopted, to be indicated by the same numeral.
Fig. 1 is the logic diagram according to the rollback control method of one embodiment of the invention.
Fig. 2 is the flow diagram according to the rollback control method of one embodiment of the invention.
Specific implementation mode
Be described below be the present invention multiple possible embodiments in some, it is desirable to provide to the present invention it is basic
Solution, it is no intended to confirm the crucial or conclusive element of the present invention or limit scope of the claimed.It is readily appreciated that, according to this
The technical solution of invention, under the connotation for not changing the present invention, those of ordinary skill in the art can propose can be mutual
Other realization methods replaced.Therefore, detailed description below and attached drawing are only the examples to technical scheme of the present invention
Property explanation, and the whole or be considered as being not to be construed as the present invention defines or limits technical solution of the present invention.
Fig. 1 show the logic diagram of the rollback control method according to one embodiment of the invention, and Fig. 2 is shown according to this hair
The flow diagram of the rollback control method of a bright embodiment.It is fallen below in conjunction with what the present invention will be described in detail shown in Fig. 1 and Fig. 2
Slip control method.
SCS has the function of DSC, can pass through ramp signal, gear signal, wheel speed signal（Namely speed signal）, system
Dynamic pedal signal and output rotational axis direction signal etc. analyze driver intention and state of motion of vehicle, to judge that vehicle is
It is no that there are rollback phenomenons；Also, the operating mode that HRC function modules are gone up a slope only for vehicle forward direction works.Stabilizing control system
（SCS）With EMS（Control unit of engine）、TCU（Gear box control unit）, brake pedal, gas pedal, braking execute structure
Between information flow relation in such as Fig. 1 clearly illustrate come.Specifically, SCS modules receive engine torque letter from EMS
Number；DCT clutches engagement state, output rotational axis direction and HRC facility request signals are received from TCU.Meanwhile SCS reads wheel speed
Sensor, ramp sensor signal and brake pedal displacement transducer signal judge vehicle running state and DCT superheat states.
When overheating fault does not occur for gearbox, TCU will not send out the request of HRC functions.When vehicle since driver steps on
Brake pedal and come to a complete stop when on ramp（Step S21 as shown in Figure 2）, SCS systems can acquire brake pedal signal（Such as it brakes
Pedal position signal, brake pedal status signal）, ramp signal, gear signal and speed signal etc.（Step as shown in Figure 2
S22）.If above-mentioned signal meets condition（For example, meet brake pedal step on, speed be 0 be more than certain time, gear D
Shelves, ramp value meet the conditions such as HSA working ranges requirement）, then SCS systems can enter pre- HSA functions（Step as shown in Figure 2
S23）.When driver loosens the brake preparation starting（Step S24 as shown in Figure 2）, SCS systems activate HSA functions first
（Step S25 as shown in Figure 2）, provide uphill starting auxiliary for driver, it is ensured that vehicle will not rollback in 2 seconds.In this 2 seconds,
SCS systems can judge state of motion of vehicle, if vehicle is smoothly started to walk（Step S262 as shown in Figure 2）Or driver
Brake pedal again（Step S261 as shown in Figure 2）, then HSA functions can normally exit（Step S27 as shown in Figure 2）, vehicle
Continues to travel or continue to be parked in original place.If the torque of vehicle output does not overcome the component of gravity（That is starting failure）And
Driver is without brake pedal again, and HSA functions can be exited due to time-out after 2 seconds（Step S31 as shown in Figure 2）.At this time
Since not enough torques make vehicle be travelled on slope, vehicle will produce rollback, and SCS systems can activate HRC functions（Such as Fig. 2
Shown step S31）.The caliper that 4 wheels of structure pair can be executed after HRC function activations by braking carries out active boost, directly
Reach the maximum allowable rollback speed demarcated to vehicle（Step S33 as shown in Figure 2）, which generally exists
1.6~10KPH（Miles per hour）Setting in range, specific choice sighting target are pledged love depending on condition.In the HRC courses of work, if
Vehicle is constantly in rollback condition, and then HRC continue workings cause the limit time that hardware allows.In HRC preparations or the course of work
In, when driver's brake pedal makes vehicle stop（Step S341 as shown in Figure 2）Or pedal of stepping on the throttle generates enough
Big climbing torque makes vehicle upwards when driving（Step S342 as shown in Figure 2）, SCS systems can exit HRC functions（Such as Fig. 2 institutes
Show step S35）.
Gearbox occur overheating fault when, TCU can direct case SCS systems send out HRC functions ask（Step as shown in Figure 2
S41）, SCS systems, which receive, can be directly entered HRC preparation states after HRC is asked（Step S41 as shown in Figure 2）.No matter driver
Whether HSA functions are first activated, as long as vehicle has the rollback for violating driver intention, then SCS functions start HRC functions to falling
It slips speed to be controlled, prevents rollback accident.Wherein, the exit criteria of HRC functions is driver's actively brake parking（Such as Fig. 2
Shown step S341）.
Therefore, when vehicle-state meets preset condition or when overheating fault occurs by DCT, it is right that SCS modules pass through
The active boost of braking system achievees the purpose that slow down vehicle rollback speed, to realize that rollback is protected, also be avoided that because going up a slope
Rollback failure caused by driveaway operation is improper.
It is to be appreciated that above example is schematically illustrated by taking DCT as an example, those skilled in the art according to
The rollback control method of teachings above and enlightenment, above-described embodiment is equally applicable to the other kinds of automatic gear-box of gearbox
（AT）.
Example above primarily illustrates the rollback control method of the present invention.Although only to the embodiment party of some of present invention
Formula is described, but those of ordinary skill in the art it is to be appreciated that the present invention can without departing from its spirit with range in
Implemented in the form of many other.Therefore, the example shown is considered as illustrative and not restrictive with embodiment,
In the case of not departing from the spirit and scope of the present invention as defined in appended claims, the present invention may cover various repair
Change and replaces.
Claims (12)
1. a kind of rollback control method based on stabilizing control system, wherein the stabilizing control system has uphill starting auxiliary
Help function module；It is characterized in that, the stabilizing control system also has ramp rollback control function module；In upward slope operating mode item
Vehicle under part is during uphill starting, and when meeting one of following two conditions, the stabilizing control system makes
The uphill starting supplemental functionality is stopped and activates the ramp rollback control function module to prevent falling for vehicle
It is more than maximum allowable rollback speed to slip speed；
Wherein, described two conditions are：
Overheating fault occurs for condition one, gearbox,
Condition two, overheating fault occurs for gearbox, while uphill starting fails and brake pedal is not operated braking；
Wherein, actively to the vehicle of the vehicle under upward slope working condition when the ramp rollback control function module is activated
Wheel braking.
2. rollback control method as described in claim 1, which is characterized in that in its for judging whether to meet described two conditions
In before one, it is further comprising the steps of：
Based on ramp signal, gear signal, speed signal, output rotational axis direction and the brake pedal signal at least acquired come really
Determine vehicle and is in uphill starting state；And
Uphill starting supplemental functionality is controlled by stabilizing control system activation work with carrying out uphill starting.
3. rollback control method as claimed in claim 2, which is characterized in that stepped on again in smooth starting or brake pedal
In the case of lower braking, the uphill starting supplemental functionality is stopped.
4. rollback control method as claimed in claim 2, which is characterized in that the stabilizing control system is held from the braking of vehicle
Row mechanism acquires the ramp signal and speed signal, and the stabilizing control system is from described in the acquisition of the brake pedal apparatus of vehicle
Brake pedal signal, the stabilizing control system at least acquire the gear signal from the gear box control unit of vehicle.
5. rollback control method as claimed in claim 2, which is characterized in that the stabilizing control system is also from the TCU of vehicle
Acquire clutch state signal, output rotational axis direction signal.
6. rollback control method as claimed in claim 2, which is characterized in that the torque of vehicle output is controlled single by engine
Member acquires and is sent to the stabilizing control system.
7. rollback control method as described in claim 1, which is characterized in that the uphill starting refers to unsuccessfully in take-off the brake
The pedal and uphill starting supplemental functionality is activated in the predetermined amount of time of work, the torque that vehicle exports wheel does not have
There is the reactive torque caused by the gravity for overcoming vehicle on ramp.
8. rollback control method as claimed in claim 7, which is characterized in that ranging from 1.5 seconds to 2 of the predetermined amount of time
Second.
9. rollback control method as described in claim 1, which is characterized in that during the wheel braking, increase to wheel
Brake apparatus brake pressure, until vehicle rollback speed be less than or equal to maximum allowable rollback speed.
10. rollback control method as claimed in claim 9, which is characterized in that the maximum allowable rollback speed is ranging from
1.6 to 10 kilometers/hour.
11. rollback control method as claimed in claim 9, which is characterized in that in smooth starting or brake pedal by again
In the case of stepping on braking, the ramp rollback control function module from service.
12. the rollback control method as described in any one of claim 1-11, which is characterized in that the gearbox is double clutches
Device gearbox or other kinds of automatic gear-box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310531148.3A CN104590252B (en) | 2013-11-01 | 2013-11-01 | A kind of rollback control method based on stabilizing control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310531148.3A CN104590252B (en) | 2013-11-01 | 2013-11-01 | A kind of rollback control method based on stabilizing control system |
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| CN104590252A CN104590252A (en) | 2015-05-06 |
| CN104590252B true CN104590252B (en) | 2018-09-04 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101655692B1 (en) * | 2015-07-07 | 2016-09-08 | 현대자동차주식회사 | Method for preventing overheat of clutch |
| DE102016212072B4 (en) * | 2015-10-21 | 2024-12-24 | Ford Global Technologies, Llc | Improved start-stop system of a motor-driven vehicle with manual transmission |
| US9944288B1 (en) * | 2017-03-27 | 2018-04-17 | Ford Global Technologies, Llc | Vehicle idle and launch control |
| US11904828B2 (en) * | 2017-12-29 | 2024-02-20 | ZF Active Safety US Inc. | Traction control rollback mitigation on split mu grades |
| CN111720541B (en) * | 2019-03-20 | 2021-08-17 | 上海汽车集团股份有限公司 | Method for acquiring rotation direction of input shaft of double-clutch transmission and related device |
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| DE102007023928A1 (en) * | 2007-05-23 | 2008-11-27 | Lucas Automotive Gmbh | Technology for starting a motor vehicle on a sloping route |
| CN101678818A (en) * | 2007-05-23 | 2010-03-24 | 卢卡斯汽车股份有限公司 | Method for starting a motor vehicle on an inclined route |
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| CN103223947A (en) * | 2013-05-03 | 2013-07-31 | 龚志辉 | Automobile start assistant control method based on ABS device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SE524510C2 (en) * | 2002-12-30 | 2004-08-17 | Volvo Lastvagnar Ab | Method and device for starting uphill |
| GB2431444B (en) * | 2005-10-21 | 2011-04-13 | Ford Global Tech Llc | Brake control system |
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|---|---|---|---|---|
| DE102007023928A1 (en) * | 2007-05-23 | 2008-11-27 | Lucas Automotive Gmbh | Technology for starting a motor vehicle on a sloping route |
| CN101678818A (en) * | 2007-05-23 | 2010-03-24 | 卢卡斯汽车股份有限公司 | Method for starting a motor vehicle on an inclined route |
| WO2011043078A1 (en) * | 2009-10-07 | 2011-04-14 | 本田技研工業株式会社 | Hill start assist for vehicle |
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