CN106114499A - A kind of pretrigger method and system of vehicle 4 wheel driven function - Google Patents
A kind of pretrigger method and system of vehicle 4 wheel driven function Download PDFInfo
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- CN106114499A CN106114499A CN201610473124.0A CN201610473124A CN106114499A CN 106114499 A CN106114499 A CN 106114499A CN 201610473124 A CN201610473124 A CN 201610473124A CN 106114499 A CN106114499 A CN 106114499A
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- vehicle
- wheel driven
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- stability
- wheelslip
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000007423 decrease Effects 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000005183 dynamical system Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010426 asphalt Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/02—Control of vehicle driving stability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/119—Conjoint control of vehicle sub-units of different type or different function including control of all-wheel-driveline means, e.g. transfer gears or clutches for dividing torque between front and rear axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
- B60W10/184—Conjoint control of vehicle sub-units of different type or different function including control of braking systems with wheel brakes
- B60W10/188—Conjoint control of vehicle sub-units of different type or different function including control of braking systems with wheel brakes hydraulic brakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/20—Conjoint control of vehicle sub-units of different type or different function including control of steering systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/10—Longitudinal speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/28—Wheel speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/18—Steering angle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/30—Driving style
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2552/00—Input parameters relating to infrastructure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2552/00—Input parameters relating to infrastructure
- B60W2552/30—Road curve radius
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2720/00—Output or target parameters relating to overall vehicle dynamics
- B60W2720/40—Torque distribution
- B60W2720/403—Torque distribution between front and rear axle
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Regulating Braking Force (AREA)
Abstract
The pretrigger method and system of disclosure a kind of vehicle 4 wheel driven.Described method includes: step one, gather one or more of view data, vehicle GPS data or vehicle operation data that preposition photographing unit photographs；Step 2, based on above-mentioned data, it is judged that vehicle whether there will be stability decline or the danger of wheelslip；Step 3, as judge be, pre-cooling vehicle 4 wheel driven function.By the present processes and system, can in advance in view of stability being caused to decline and the factor of wheelslip, and take precaution measures to reduce wheelslip or keep stability of automobile.Thus it is high to improve intact stability, also improves the driving experience of user.
Description
Technical field
The application relates to automotive field, particularly relates to the pretrigger method and system of a kind of vehicle 4 wheel driven function.
Background technology
In prior art, a lot of vehicles, especially SUV, switchable 4 wheel driven (AWD) system can be equipped with.Car detected
When stability declines or occurs the situation of wheelslip etc. during the advance of vehicle, made by described four-wheel drive system
The generation of danger is avoided in corresponding reaction.Broadly, 4 wheel driven function also comprises vehicle stabilization function.
But, the 4 wheel driven function of major part vehicle of the prior art, is all to decline or sliding in vehicle generation stability
In the case of just start.Stability and the driving experience degree of vehicle there is also certain deficiency.
It addition, from the beginning of 2016, a lot of vehicles all start equipment actively brake hard (AEB) system.Preposition photographing unit
It is the topmost sensor needed for active emergency braking system with preposition radar.Therefore, based on this, how to utilize existing vehicle
Safety devices (the most preposition photographing unit etc.), and improve intact stability and driving experience degree, become industry primary study
Topic.
Summary of the invention
In view of this, the pretrigger of the vehicle 4 wheel driven function that the application provides a kind of intact stability high and driving experience is good
Method and system.
The application realizes one of by following technical solution goal of the invention:
A kind of pretrigger method of vehicle 4 wheel driven, including: step one, gather view data that preposition photographing unit photographs,
One or more of vehicle GPS data or vehicle operation data；Step 2, based on above-mentioned data, it is judged that whether vehicle there will be
Stability declines or the danger of wheelslip；Step 3, as judge be, pre-cooling vehicle 4 wheel driven function.
Further, the view data that preposition photographing unit photographs, at least include: pavement properties, road surface slippery situation situation
One or both.
Further, vehicle GPS data, at least include pavement state information, road surface gradient information, the one of road camber information
Or it is multiple.
Further, vehicle operation data, at least include speed, wheel speed, ambient temperature, throttle, brake, turn to, drive
One or more of the operation of member and the driving habits behavior of driver.
Further, start vehicle 4 wheel driven function, including the moment distribution changing automobile front-rear axle.
Further, start vehicle 4 wheel driven function, entirely take turns moment including what minimizing dynamical system provided, until judging not deposit
Stability of automobile is being caused to decline and the situation of wheelslip.
Further, start vehicle 4 wheel driven function, rush liquid including to brake fluid pressure unit.
Further, start vehicle 4 wheel driven function, including the unlatching locking mechanism selecting differential lock.
Further, start vehicle 4 wheel driven function, including closing electric load unrelated in electric power steering system, so that
Obtain power steering system and can obtain maximum current.
Further, step one also includes gathering weather data.
The application by following technical solution two realize goal of the invention:
The pre-boot systems of a kind of vehicle 4 wheel driven, including preposition camera unit, GPS unit, 4 wheel driven unit and control
Device, described system performs method as above.
Further, described system also includes the radio communication unit receiving weather data；Gather the shooting of preposition photographing unit
One or more of view data, vehicle GPS data, vehicle operation data or the weather data arrived, and judge that vehicle whether can
Occur that stability declines or the danger of wheelslip.
Compared with prior art, the application can consider stability can be caused to decline and the factor of wheelslip in advance,
And take precaution measures to reduce wheelslip or keep stability of automobile.Thus it is high to improve intact stability, also promotes
The driving experience of user.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the pretrigger method of the application vehicle 4 wheel driven.
Fig. 2 is the structural representation of the pre-boot systems of the application vehicle 4 wheel driven.
Detailed description of the invention
Here will illustrate illustrative embodiments in detail, its example represents in the accompanying drawings.Explained below relates to
And during accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element.Following exemplary is implemented
Embodiment described in mode does not represent all embodiments consistent with the application.On the contrary, they be only with such as
The example of the apparatus and method that some aspects that described in detail in appended claims, the application are consistent.
It is only merely for describing the purpose of particular implementation at term used in this application, and is not intended to be limiting this Shen
Please." a kind of ", " described " and " being somebody's turn to do " of singulative used in the application and appended claims is also intended to include
Most forms, unless context clearly shows that other implications.It is also understood that term "and/or" used herein refers to
And comprise any or all possible combination of one or more project of listing being associated.
As it is shown in figure 1, a kind of pretrigger method of vehicle 4 wheel driven, including: step one, gather what preposition photographing unit photographed
One or more of view data, vehicle GPS data or vehicle operation data；Step 2, based on above-mentioned data, it is judged that vehicle is
The no stability that there will be declines or the danger of wheelslip；Step 3, as judge be, pre-cooling vehicle 4 wheel driven function.
In described step one, the view data that described preposition photographing unit photographs, at least include: pavement properties, road surface
One or both of wet and slippery situation.Wherein pavement properties includes road surface curvature, road surface material etc., and the most preposition photographing unit photographs
Image can embody vehicle and change to broken stone road or dirt road from asphalt road.Road surface slippery situation situation includes road surface rain, ice and snow
Etc. situation.
In described step one, described vehicle GPS data, at least include pavement state information, road surface gradient information, road camber
One or more of information.
In described step one, described vehicle operation data, at least include speed, wheel speed, ambient temperature, throttle, brake, turn
To, the operation of driver, one or more of driving habits behavior of driver.The operation of described driver, including driver
Driver behavior.The driving habits behavior of described driver is saved in relevant service system.Further, to driving habits
Behavior is classified, driving habits behavior the most in a short time, driving habits behavior under normal circumstances, driving under particular weather
Sail acquired behavior, driving habits behavior based on different location and the triggering row of stability contorting based on different location (ESC)
For.
In step 3, start vehicle 4 wheel driven function, including the moment distribution changing automobile front-rear axle.Such as, at 4 wheel driven
In system, mainly propons drives, so the moment of back axle must increase, the moment of propons must reduce.
In step 3, starting vehicle 4 wheel driven function, entirely taking turns moment including what minimizing dynamical system provided, until judging not
Exist and cause stability of automobile to decline and the situation of wheelslip.
In step 3, start vehicle 4 wheel driven function, rush liquid including to brake fluid pressure unit.Give brake fluid pressure unit in advance
Rush liquid, it is meant that brake pump to pressurize in brake pipe.This and adaptation actively emergency braking system and self adaptation cruise
(ACC) as the reflection action of the brake unit in system is.
In step 3, start vehicle 4 wheel driven function, including the unlatching locking mechanism selecting differential lock.
In step 3, start vehicle 4 wheel driven function, including closing electric load unrelated in electric power steering system, with
Make power steering system can obtain maximum current.If driver needs the biggest wheel angle or needs to turn suddenly,
This is necessary.
In step one, also include gathering weather data.Obtained by multimedia or the information service relevant to car
Environment/Weather information.As such, it is possible to obtain environment or the change information of weather.Such as, automobile sails a region, this district into
Raining or raining in territory.
As in figure 2 it is shown, the pre-boot systems 100 of the application vehicle 4 wheel driven, in order to perform method as above, including:
Preposition camera unit 1, GPS unit 2,4 wheel driven unit 3 and controller 4.Described controller 4 is according to from preposition camera unit
1 and GPS unit 2 obtain information, control being turned on and off of 4 wheel driven unit 3.
Described system 100 also includes the radio communication unit 5 receiving weather data；Gather preposition camera unit 1 to shoot
To view data, the vehicle GPS data collected of GPS unit 2 or vehicle operation data while one or more, also gather
The weather data obtained from radio communication unit 5, and judge whether vehicle there will be stability and decline or the danger of wheelslip.
System of the prior art or method tend to reaction, i.e. when occur stability decline and wheelslip it
After, just make a response.And the system and method for the application, it is intended to predict or infer whether that can run into stability declines and wheel
The sight of sliding, thus can take action before situation occurs.
Further, the system and method for the application is when assessing stability of automobile and declining with wheelslip, except using
Outside the information of wheel speed sensors or steering wheel angle sensor, also use the set of a series of sensor, thus collected one and be
The information of row system, contributes to judging more accurately.
In sum, by the application system and method, can be sliding with wheel in view of stability can be caused to decline in advance
The factor moved, and take precaution measures to reduce wheelslip or keep stability of automobile.Thus improve intact stability
Height, also improves the driving experience of user.
In superincumbent description, elaborate the details of technical scheme, but, those skilled in the art can be much of that
Solve, the invention is not restricted to the detail listed by above-described embodiment, but can become in claim limited range
Change.
The foregoing is only the better embodiment of the application, not in order to limit the application, all the application's
Within spirit and principle, any modification, equivalent substitution and improvement etc. done, should be included within the scope of the application protection.
Claims (12)
1. the pretrigger method of a vehicle 4 wheel driven, it is characterised in that including: step one, gather what preposition photographing unit photographed
One or more of view data, vehicle GPS data or vehicle operation data；Step 2, based on above-mentioned data, it is judged that vehicle is
The no stability that there will be declines or the danger of wheelslip；Step 3, as judge be, pre-cooling vehicle 4 wheel driven function.
2. the method for claim 1, it is characterised in that: the view data that preposition photographing unit photographs, at least include: road
Surface properties, road surface slippery situation situation one or both.
3. the method for claim 1, it is characterised in that: vehicle GPS data, at least include pavement state information, road surface
Gradient information, road camber information one or more.
4. the method for claim 1, it is characterised in that: vehicle operation data, at least include speed, wheel speed, environment temperature
Degree, throttle, brake, turn to, the driving habits behavior of the operation of driver and driver one or more.
5. the method for claim 1, it is characterised in that: start vehicle 4 wheel driven function, including changing automobile front-rear axle
Moment distribution.
6. the method for claim 1, it is characterised in that: start vehicle 4 wheel driven function, provide including reducing dynamical system
Entirely take turns moment, cause stability of automobile to decline and the situation of wheelslip until judging not exist.
7. the method for claim 1, it is characterised in that: start vehicle 4 wheel driven function, rush including to brake fluid pressure unit
Liquid.
8. the method for claim 1, it is characterised in that: start vehicle 4 wheel driven function, including the unlatching selecting differential lock
Locking mechanism.
9. the method for claim 1, it is characterised in that: start vehicle 4 wheel driven function, turn to including closing electric power
Electric load unrelated in system, so that power steering system can obtain maximum current.
10. the method for claim 1, it is characterised in that: step one also includes gathering weather data.
The pre-boot systems of 11. 1 kinds of vehicle 4 wheel drivens, including preposition camera unit, GPS unit, 4 wheel driven unit and control
Device, it is characterised in that: described system performs the method as described in any one of claim 1 to 10.
12. systems as claimed in claim 11, it is characterised in that: described system also includes the wireless telecommunications receiving weather data
Unit；Gather view data, vehicle GPS data, vehicle operation data or the one of weather data that preposition photographing unit photographs
Or multiple, and judge whether vehicle there will be stability and decline or the danger of wheelslip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610473124.0A CN106114499A (en) | 2016-06-24 | 2016-06-24 | A kind of pretrigger method and system of vehicle 4 wheel driven function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610473124.0A CN106114499A (en) | 2016-06-24 | 2016-06-24 | A kind of pretrigger method and system of vehicle 4 wheel driven function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106114499A true CN106114499A (en) | 2016-11-16 |
Family
ID=57265555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610473124.0A Pending CN106114499A (en) | 2016-06-24 | 2016-06-24 | A kind of pretrigger method and system of vehicle 4 wheel driven function |
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| Country | Link |
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| CN (1) | CN106114499A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106740854A (en) * | 2016-11-21 | 2017-05-31 | 百度在线网络技术（北京）有限公司 | The power-control method and device of the vehicles |
| CN108238045A (en) * | 2017-12-27 | 2018-07-03 | 北京车和家信息技术有限公司 | A kind of control method for vehicle and vehicle |
| US11273833B2 (en) | 2016-12-29 | 2022-03-15 | Byd Company Limited | Acceleration slip regulation method and device for four-wheel drive electric vehicle |
-
2016
- 2016-06-24 CN CN201610473124.0A patent/CN106114499A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106740854A (en) * | 2016-11-21 | 2017-05-31 | 百度在线网络技术（北京）有限公司 | The power-control method and device of the vehicles |
| US11273833B2 (en) | 2016-12-29 | 2022-03-15 | Byd Company Limited | Acceleration slip regulation method and device for four-wheel drive electric vehicle |
| CN108238045A (en) * | 2017-12-27 | 2018-07-03 | 北京车和家信息技术有限公司 | A kind of control method for vehicle and vehicle |
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Application publication date: 20161116 |