CN108757919A - A kind of vehicle start control method and device - Google Patents
A kind of vehicle start control method and device Download PDFInfo
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- CN108757919A CN108757919A CN201810563055.1A CN201810563055A CN108757919A CN 108757919 A CN108757919 A CN 108757919A CN 201810563055 A CN201810563055 A CN 201810563055A CN 108757919 A CN108757919 A CN 108757919A
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
- F16H61/0437—Smoothing ratio shift by using electrical signals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/48—Inputs being a function of acceleration
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
- F16H2061/0462—Smoothing ratio shift by controlling slip rate during gear shift transition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
- F16H2061/0488—Smoothing ratio shift during range shift from neutral (N) to drive (D)
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The embodiment of the present invention provides a kind of vehicle start control method and device, and this method includes：When meeting default starting control condition, current acceleration expectation torque corresponding with its of target vehicle is obtained；Whether detection current acceleration reaches critical acceleration；Wherein, critical acceleration is for characterizing a receptible maximum Vehicular vibration degree；If reaching, it is determined that the corresponding torque increase of current acceleration, and it is expected that the sum of torque and torque increase are that actual torque carries out vehicle start control；If not up to, it is expected that torque carries out vehicle start control as actual torque.When carrying out vehicle control using scheme provided in an embodiment of the present invention, when acceleration reaches the critical acceleration, it is further added by a torque increase on original basis for it is expected torque, and carry out vehicle start control by actual torque of sum of the two, quickly through the acceleration critical point when can make vehicle start, oscillation phenomenon when vehicle starting is reduced, vehicle comfort level is improved.
Description
Technical field
The present invention relates to technical field of vehicle control, more particularly to a kind of vehicle start control method and device.
Background technology
In general, wet-type dual-clutch transmission transmission device may include：Two coaxial nested or parallel arrangement clutches
Device, two input shafts of coaxial and inside and outside nested arrangement, the output shaft of two parallel arrangements are arranged in multiple same on output shaft
Walk device device, multiple selector forks and 1 differential mechanism.In addition, the input gear of speed changer odd number shelves or even gear distinguishes cloth
It sets on two input shafts, the switching by two clutches and different synchronizer actions are realized via different input shafts and turned round
Square converts and output.
In general, double-clutch speed changer Vehicle Starting Process is：Step on brake, shift handle by P grades switch to D grades or
R grades, release brake, vehicle starts to move.However, before vehicle brake pedal discharges completely, that is, vehicle is by static
Into the starting-up process of movement, by clutch friction plate frictional behavior, the factors such as unstable, resonance of the car are influenced vehicle, vehicle
This vibration problem can reduce vehicle comfort level, it is seen then that it is necessary to provide a kind of vehicle for vehicle start operating mode rise
Walk control program.
Invention content
The embodiment of the present invention is designed to provide a kind of vehicle start control method and device, to solve vehicle start mistake
Vibration problem in journey realizes gentle start, to improve vehicle comfort level.
In order to achieve the above objectives, the embodiment of the invention discloses a kind of vehicle start control method, the starting controlling parties
Method includes：
When meeting default starting control condition, the current acceleration and the current acceleration that obtain target vehicle correspond to
Expectation torque；
Detect whether the current acceleration reaches critical acceleration；Wherein, the critical acceleration is for characterizing institute's energy
The maximum Vehicular vibration degree of receiving；
If reaching, determines rule according to predetermined torque increment, determine the corresponding torque increase of the current acceleration, and
It is that actual torque carries out vehicle start control with the sum of the expectation torque and described torque increase；
If not up to, carrying out vehicle start control by actual torque of the expectation torque.
Preferably, judgement meets default starting control condition as follows：
When detecting that target vehicle meets the whole circumstances of following a to d, judgement meets default starting control condition：
A. the speed that target vehicle advances or falls back is between [0,4] km/h；
B. target vehicle gear is in M1 grades of D grades of forward gear, R grades of reverse gear or bottom gear；
C. gas pedal aperture is zero；
D. brake pedal does not discharge completely.
Preferably, the current acceleration for obtaining target vehicle and the corresponding step for it is expected torque of the current acceleration
Suddenly include：
The current vehicle speed of target vehicle is obtained using vehicle speed sensor；
Based on the functional relation between speed and acceleration, the corresponding current acceleration of the current vehicle speed is calculated；
Obtain the corresponding expectation torque of the current acceleration.
Preferably, critical acceleration is determined in the following way：
Acquire actual acceleration of the M platform sample vehicles in starting；
It establishes M acquired actual acceleration and presets the correspondence between N number of vibration class；Wherein, described to shake
Dynamic grade is used to characterize the comfort level in Vehicle Starting Process, and the lower comfort level shown in Vehicle Starting Process of vibration class is more
It is good, and each vibration class i corresponds to an acceleration value range (ai-1, ai), i ∈ [0, N]；
Determine acceptable maximum vibration grade i in N number of vibration class in Vehicle Starting Process；Wherein, the maximum
Vibration class reflects the minimum comfort level that can be received；
Determine the right endpoint a of the corresponding acceleration value ranges of the maximum vibration grade iiFor critical acceleration.
Preferably, the quantity N of the vibration class is 10, and the maximum vibration grade i is 6.
In order to achieve the above objectives, the embodiment of the invention discloses a kind of vehicle start control device, the starting control dresses
Set including：
Data obtaining module, current acceleration for when meeting default starting control condition, obtaining target vehicle and
The corresponding expectation torque of the current acceleration；
Data detection module, for detecting whether the current acceleration reaches critical acceleration；Wherein, it is described it is critical plus
Speed receptible maximum Vehicular vibration degree for characterizing；
First control module is when reaching, to increase according to predetermined torque for the testing result in the data detection module
Amount determines rule, determines the corresponding torque increase of the current acceleration, and with the expectation torque and the torque increase it
Vehicle start control is carried out with for actual torque；
Second control module, for when the testing result of the data detection module is not up to, being turned round with the expectation
Square is that actual torque carries out vehicle start control.
Preferably, the data obtaining module, is specifically used for：
When detecting that target vehicle meets the whole circumstances of following a to d, judgement meets default starting control condition：
A. the speed that target vehicle advances or falls back is between [0,4] km/h；
B. target vehicle gear is in M1 grades of D grades of forward gear, R grades of reverse gear or bottom gear；
C. gas pedal aperture is zero；
D. brake pedal does not discharge completely.
Preferably, the data obtaining module, is specifically used for：
The current vehicle speed of target vehicle is obtained using vehicle speed sensor；
Based on the functional relation between speed and acceleration, the corresponding current acceleration of the current vehicle speed is calculated；
Obtain the corresponding expectation torque of the current acceleration.
Preferably, critical acceleration is determined in the following way：
Acquire actual acceleration of the M platform sample vehicles in starting；
It establishes M acquired actual acceleration and presets the correspondence between N number of vibration class；Wherein, described to shake
Dynamic grade is used to characterize the comfort level in Vehicle Starting Process, and the lower comfort level shown in Vehicle Starting Process of vibration class is more
It is good, and each vibration class i corresponds to an acceleration value range (ai-1, ai), i ∈ [0, N]；
Determine acceptable maximum vibration grade i in N number of vibration class in Vehicle Starting Process；Wherein, the maximum
Vibration class reflects the minimum comfort level that can be received；
Determine the right endpoint a of the corresponding acceleration value ranges of the maximum vibration grade iiFor critical acceleration.
Preferably, the quantity N of the vibration class is 10, and the maximum vibration grade i is 6.
A kind of vehicle start control method and device provided in an embodiment of the present invention, when meeting default starting control condition
Current acceleration is obtained, then detects whether current acceleration reaches critical acceleration, which, which can characterize, to connect
The maximum Vehicular vibration degree received shows that Vehicular vibration degree is unacceptable at this time when acceleration reaches the critical acceleration,
Also show that vehicle comfort level is poor at this time simultaneously, in such cases, the present invention program passes through on original basis for it is expected torque
On be further added by a torque increase, and vehicle start control is carried out by actual torque of sum of the two, when can make vehicle start
Quickly through the acceleration critical point, oscillation phenomenon when vehicle starting is reduced, vehicle comfort level is improved, in addition, due to reducing
Sliding wear time of the clutch in starting-up process, the service life of clutch can be effectively improved.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of flow diagram of vehicle start control method provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of vehicle start control device provided in an embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to solve the vibration problem in Vehicle Starting Process, realizes gentle start, improve vehicle comfort level, the present invention is real
It applies example and provides a kind of vehicle start control method and device.First below to a kind of vehicle start provided in an embodiment of the present invention
Control method illustrates.
As shown in Figure 1, being a kind of flow diagram of vehicle start control method provided in an embodiment of the present invention, specifically
Ground, the starting control method may comprise steps of：
S101：When meeting default starting control condition, obtains the current acceleration of target vehicle and described work as preacceleration
Spend corresponding expectation torque.
In a kind of realization method, it can judge to meet default starting control condition as follows, including：
When detecting that target vehicle meets the whole circumstances of following a to d, judgement meets default starting control condition：
A. the speed that target vehicle advances or falls back is between [0,4] km/h；
B. target vehicle gear is in M1 grades of D grades of forward gear, R grades of reverse gear or bottom gear；
C. gas pedal aperture is zero；
D. brake pedal does not discharge completely.
It should be noted that above-mentioned realization method is a kind of specific starting control condition provided in an embodiment of the present invention, no
Constitute limitation of the invention.
" acceleration " described herein is the longitudinal acceleration that direction is moved forward or back along vehicle, it should be noted that when
Acceleration when Vehicular vibration degree maximum is critical acceleration, that is to say, that critical acceleration is receptible for characterizing
Therefore maximum Vehicular vibration degree in order to reach the vibration problem solved in Vehicle Starting Process, is realized gentle start, is improved
The purpose of vehicle comfort level can control the acceleration of Vehicle Starting Process by critical acceleration.
In a kind of realization method, the current acceleration of target vehicle can be obtained in the following way and described works as preacceleration
Spend corresponding expectation torque：
(11) vehicle speed sensor is utilized to obtain the current vehicle speed of target vehicle.
(12) based on the functional relation between speed and acceleration, it is calculated that the current vehicle speed is corresponding to work as preacceleration
Degree.
(13) the corresponding expectation torque of the current acceleration is obtained.
The one of current acceleration expectation torque corresponding with its is obtained it should be noted that above-mentioned realization method is the present invention
Kind specific implementation, does not constitute limitation of the invention.In addition, it is necessary to explanation, disclose in the prior art " speed with
Functional relation between acceleration ", therefore it may be referred to which the Related Computational Methods of the prior art calculate, current vehicle speed is corresponding to be worked as
Preacceleration no longer repeats one by one herein.
S102：It detects whether the current acceleration reaches critical acceleration, if reaching, thens follow the steps S103, if not
Reach, thens follow the steps S104.
Wherein, the critical acceleration is for characterizing a receptible maximum Vehicular vibration degree.
It should be noted that since critical acceleration can reflect the maximum Vehicular vibration degree that can be received, and be somebody's turn to do
The size of extent of vibration is again closely related with the comfort level by bus of user, and specifically, the smaller then user's of extent of vibration relaxes by bus
Appropriateness is higher, conversely, the comfort level by bus of the more big then user of extent of vibration is lower.Therefore, critical acceleration is vehicle control mistake
A very important measurement index in journey can be solved effectively by the way that whether detection vehicle current acceleration reaches critical acceleration
The certainly vibration problem in Vehicle Starting Process.
In a kind of realization method, critical acceleration can be determined in the following way：
(21) actual acceleration of the acquisition M platform sample vehicles in starting.
(22) it establishes M acquired actual acceleration and presets the correspondence between N number of vibration class.
Wherein, the vibration class is used to characterize the comfort level in Vehicle Starting Process, and vibration class is lower to show vehicle
Comfort level in starting-up process is better, and each vibration class i corresponds to an acceleration value range (ai-1, ai), i ∈ [0,
N]。
(23) acceptable maximum vibration grade i in N number of vibration class in Vehicle Starting Process is determined.
Wherein, the maximum vibration grade reflects the minimum comfort level that can be received.
(24) the right endpoint a of the corresponding acceleration value ranges of the maximum vibration grade i is determinediFor critical acceleration.
It should be pointed out that the mode of above-mentioned determining critical acceleration is based on mathematical statistics analysis, correlativity analysis
Etc. mathematical processing methods obtain, it is understood, therefore, that for for sample data for statistical analysis, that is, M platform samples
The data capacity of actual acceleration of this vehicle in starting is bigger, and obtained mathematical analysis result will be more accurate, also
It is to say, the more big obtained mathematical analysis result of numerical value of M will be more accurate, in addition, the embodiment of the present invention is not needed to M's
Concrete numerical value is defined, and those skilled in the art can reasonably be set according to the concrete condition in practical application
It sets.
In a kind of realization method, those skilled in the art are referred to the evaluation that following table carries out vibration class.
It should also be noted that, a kind of specific side that realization method recited herein, which is only the embodiment of the present invention, to be provided
Formula should not constitute the restriction to the embodiment of the present invention, can also there is other feasible realization methods, ability in practical application
Technical staff in domain can be reasonably arranged according to the concrete condition in practical application.
Preferably, the quantity N of the vibration class is 10, and the maximum vibration grade i is 6.It should be noted that here
The quantity of cited vibration class and the concrete numerical value of maximum vibration grade are only provided in an embodiment of the present invention a kind of preferred
Embodiment rather than unique realization method provided in an embodiment of the present invention, such as the quantity of vibration class can also be 3,5 etc.
It needs reasonably to be arranged according to the concrete condition in practical application Deng, those skilled in the art.
S103：Rule is determined according to predetermined torque increment, determines the corresponding torque increase of the current acceleration, and with institute
It is that actual torque carries out vehicle start control to state the sum of desired torque and the torque increase.
It should be noted that vehicle torsional moment is one of cardinal index of engine, acceleration, the climbing of automobile can be reacted
Ability and suspension etc., that is to say, that when the bigger vehicle of torque is also rapider by a certain acceleration, caused by user
The time of bad experience by bus is also shorter, it is understood, therefore, that being based on this thought, the embodiment of the present invention is being examined
It measures in the case that current acceleration reaches critical acceleration, a torque is increased on original basis for it is expected torque
Increment improves the comfort level by bus of user so as to achieve the purpose that vehicle is allowed to run through critical acceleration.
S104：Vehicle start control is carried out by actual torque of the expectation torque.
It should be noted that in the case where detecting that current acceleration is not up to critical acceleration, indicates and work as preacceleration
The corresponding Vehicular vibration degree of degree is acceptable, therefore can be according to the original expectation torque being calculated to vehicle
Carry out starting control.
A kind of vehicle start control method and device provided in an embodiment of the present invention, when meeting default starting control condition
Current acceleration is obtained, then detects whether current acceleration reaches critical acceleration, which can be characterized in starting
The receptible maximum Vehicular vibration degree of stage institute shows Vehicular vibration journey at this time when acceleration reaches the critical acceleration
Spend it is unacceptable, also simultaneously show that vehicle comfort level is poor at this time, in such cases, the present invention program pass through original it is expected torsion
It is further added by a torque increase on the basis of square, and vehicle start control is carried out by actual torque of sum of the two, can make
Quickly through the acceleration critical point when vehicle start, oscillation phenomenon when vehicle starting is reduced, improves vehicle comfort level, separately
Outside, due to reducing sliding wear time of the clutch in starting-up process, the service life of clutch can be effectively improved.
Relative to above-mentioned vehicle start control method, the embodiment of the present invention additionally provides a kind of vehicle start control device.
Vehicle start device provided in an embodiment of the present invention is illustrated below.
As shown in Fig. 2, being a kind of structural schematic diagram of vehicle start control device provided in an embodiment of the present invention, the starting
Control device may include：Data obtaining module 210, data detection module 220, the first control module 230 and second control mould
Block 240.
Wherein, data obtaining module 210, for when meeting default starting control condition, obtaining the current of target vehicle
Acceleration and the corresponding expectation torque of the current acceleration.
Data detection module 220, for detecting whether the current acceleration reaches critical acceleration；Wherein, described to face
Boundary's acceleration receptible maximum Vehicular vibration degree for characterizing.
First control module 230 is when reaching, according to default for the testing result in the data detection module 220
Torque increase determines rule, determines the corresponding torque increase of the current acceleration, and with the expectation torque and the torque
The sum of increment is that actual torque carries out vehicle start control.
Second control module 240, when for the testing result in the data detection module 220 to be not up to, with described
It is expected that torque, which is actual torque, carries out vehicle start control.
In a kind of realization method, the data obtaining module 210 is specifically used for：
When detecting that target vehicle meets the whole circumstances of following a to d, judgement meets default starting control condition：
A. the speed that target vehicle advances or falls back is between [0,4] km/h；
B. target vehicle gear is in M1 grades of D grades of forward gear, R grades of reverse gear or bottom gear；
C. gas pedal aperture is zero；
D. brake pedal does not discharge completely.
In a kind of realization method, the data obtaining module 210 is specifically used for：
The current vehicle speed of target vehicle is obtained using vehicle speed sensor；
Based on the functional relation between speed and acceleration, the corresponding current acceleration of the current vehicle speed is calculated；
Obtain the corresponding expectation torque of the current acceleration.
In a kind of realization method, critical acceleration can be determined in the following way：
Acquire actual acceleration of the M platform sample vehicles in starting；
It establishes M acquired actual acceleration and presets the correspondence between N number of vibration class；Wherein, described to shake
Dynamic grade is used to characterize the comfort level in Vehicle Starting Process, and the lower comfort level shown in Vehicle Starting Process of vibration class is more
It is good, and each vibration class i corresponds to an acceleration value range (ai-1, ai)；
Determine acceptable maximum vibration grade i in N number of vibration class in Vehicle Starting Process；Wherein, the maximum
Vibration class reflects the minimum comfort level that can be received；
Determine the right endpoint a of the corresponding acceleration value ranges of the maximum vibration grade iiFor critical acceleration.
Preferably, the quantity N of the vibration class is 10, and the maximum vibration grade i is 6.
When carrying out vehicle start control using vehicle start control device provided in an embodiment of the present invention, meeting in advance first
If starting control condition when obtain current acceleration, then detect current acceleration whether reach critical acceleration, this it is critical plus
Speed can characterize the receptible maximum Vehicular vibration degree of institute and show vehicle at this time when acceleration reaches the critical acceleration
Extent of vibration is unacceptable, also shows that vehicle comfort level is poor at this time simultaneously, in such cases, the present invention program passes through original
It is expected that being further added by a torque increase on the basis of torque, and vehicle start control is carried out by actual torque of sum of the two,
Quickly through the acceleration critical point when can make vehicle start, oscillation phenomenon when vehicle starting is reduced, it is comfortable to improve vehicle
Degree, in addition, due to reducing sliding wear time of the clutch in starting-up process, can effectively improve the service life of clutch.
For device embodiments, since it is substantially similar to the method embodiment, related so describing fairly simple
Place illustrates referring to the part of embodiment of the method.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
One of ordinary skill in the art will appreciate that all or part of step in realization above method embodiment is can
It is completed with instructing relevant hardware by program, the program can be stored in computer read/write memory medium,
Storage medium designated herein, such as：ROM/RAM, magnetic disc, CD etc..
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the scope of the present invention.It is all
Any modification, equivalent replacement, improvement and so within the spirit and principles in the present invention, are all contained in protection scope of the present invention
It is interior.
Claims (10)
1. a kind of vehicle start control method, which is characterized in that the starting control method includes：
When meeting default starting control condition, current acceleration and the current acceleration corresponding phase of target vehicle are obtained
Hope torque；
Detect whether the current acceleration reaches critical acceleration；Wherein, the critical acceleration can receive for characterizing
Maximum Vehicular vibration degree；
If reaching, determines rule according to predetermined torque increment, determine the corresponding torque increase of the current acceleration, and with institute
It is that actual torque carries out vehicle start control to state the sum of desired torque and the torque increase；
If not up to, carrying out vehicle start control by actual torque of the expectation torque.
2. starting control method according to claim 1, which is characterized in that judgement meets default starting as follows
Control condition：
When detecting that target vehicle meets the whole circumstances of following a to d, judgement meets default starting control condition：
A. the speed that target vehicle advances or falls back is between [0,4] km/h；
B. target vehicle gear is in M1 grades of D grades of forward gear, R grades of reverse gear or bottom gear；
C. gas pedal aperture is zero；
D. brake pedal does not discharge completely.
3. starting control method according to claim 1 or 2, which is characterized in that the current of acquisition target vehicle adds
The step of speed and the current acceleration corresponding expectation torque includes：
The current vehicle speed of target vehicle is obtained using vehicle speed sensor；
Based on the functional relation between speed and acceleration, the corresponding current acceleration of the current vehicle speed is calculated；
Obtain the corresponding expectation torque of the current acceleration.
4. starting control method according to claim 1 or 2, which is characterized in that determine critical acceleration in the following way
Degree：
Acquire actual acceleration of the M platform sample vehicles in starting；
It establishes M acquired actual acceleration and presets the correspondence between N number of vibration class；Wherein, described vibration etc.
Grade is for characterizing the comfort level in Vehicle Starting Process, and vibration class is lower, and the comfort level shown in Vehicle Starting Process is better,
And each vibration class i corresponds to an acceleration value range (ai-1, ai), i ∈ [0, N]；
Determine acceptable maximum vibration grade i in N number of vibration class in Vehicle Starting Process；Wherein, the maximum vibration
Grade reflects the minimum comfort level that can be received；
Determine the right endpoint a of the corresponding acceleration value ranges of the maximum vibration grade iiFor critical acceleration.
5. starting control method according to claim 4, which is characterized in that the quantity N of the vibration class is 10, described
Maximum vibration grade i is 6.
6. a kind of vehicle start control device, which is characterized in that the start control device includes：
Data obtaining module, current acceleration for when meeting default starting control condition, obtaining target vehicle and described
The corresponding expectation torque of current acceleration；
Data detection module, for detecting whether the current acceleration reaches critical acceleration；Wherein, the critical acceleration
The receptible maximum Vehicular vibration degree for characterizing；
First control module, for the testing result in the data detection module be reach when, it is true according to predetermined torque increment
Set pattern then, determines the corresponding torque increase of the current acceleration, and be with the sum of the expectation torque and described torque increase
Actual torque carries out vehicle start control；
Second control module, for when the testing result of the data detection module is not up to, being with the expectation torque
Actual torque carries out vehicle start control.
7. start control device according to claim 6, which is characterized in that the data obtaining module is specifically used for：
When detecting that target vehicle meets the whole circumstances of following a to d, judgement meets default starting control condition：
A. the speed that target vehicle advances or falls back is between [0,4] km/h；
B. target vehicle gear is in M1 grades of D grades of forward gear, R grades of reverse gear or bottom gear；
C. gas pedal aperture is zero；
D. brake pedal does not discharge completely.
8. the start control device described according to claim 6 or 7, which is characterized in that the data obtaining module, it is specific to use
In：
The current vehicle speed of target vehicle is obtained using vehicle speed sensor；
Based on the functional relation between speed and acceleration, the corresponding current acceleration of the current vehicle speed is calculated；
Obtain the corresponding expectation torque of the current acceleration.
9. the start control device described according to claim 6 or 7, which is characterized in that determine critical acceleration in the following way
Degree：
Acquire actual acceleration of the M platform sample vehicles in starting；
It establishes M acquired actual acceleration and presets the correspondence between N number of vibration class；Wherein, described vibration etc.
Grade is for characterizing the comfort level in Vehicle Starting Process, and vibration class is lower, and the comfort level shown in Vehicle Starting Process is better,
And each vibration class i corresponds to an acceleration value range (ai-1, ai), i ∈ [0, N]；
Determine acceptable maximum vibration grade i in N number of vibration class in Vehicle Starting Process；Wherein, the maximum vibration
Grade reflects the minimum comfort level that can be received；
Determine the right endpoint a of the corresponding acceleration value ranges of the maximum vibration grade iiFor critical acceleration.
10. start control device according to claim 9, which is characterized in that the quantity N of the vibration class is 10, institute
It is 6 to state maximum vibration grade i.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810563055.1A CN108757919A (en) | 2018-05-31 | 2018-05-31 | A kind of vehicle start control method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810563055.1A CN108757919A (en) | 2018-05-31 | 2018-05-31 | A kind of vehicle start control method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108757919A true CN108757919A (en) | 2018-11-06 |
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| CN112477630A (en) * | 2020-12-04 | 2021-03-12 | 江苏科技大学 | Control method for improving starting comfort of electric vehicle |
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