CN107085382A - A kind of vehicle parameter calibration facility and method - Google Patents
A kind of vehicle parameter calibration facility and method Download PDFInfo
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- CN107085382A CN107085382A CN201610086216.3A CN201610086216A CN107085382A CN 107085382 A CN107085382 A CN 107085382A CN 201610086216 A CN201610086216 A CN 201610086216A CN 107085382 A CN107085382 A CN 107085382A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B17/00—Systems involving the use of models or simulators of said systems
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Abstract
The present invention relates to vehicle parameter calibration technique field, a kind of vehicle parameter calibration facility and method are disclosed, the equipment includes：Receiving unit, receives vehicle parameter and acceleration limit value threshold value and velocity amplitude corresponding with the acceleration limit value threshold value；VAM Characteristics Control units, control the opening and closing of VAM characteristics；Simulation computing unit, in the case where VAM characteristics are opened according to the vehicle parameter is to the acceleration time and accelerates oil consumption to carry out simulation calculation；Control unit, the acceleration time calculated according to simulation computing unit determines VAM characteristic calibrating parameters with acceleration oil consumption；In the case where VAM characteristics are opened, control unit is additionally operable to control the acceleration of vehicle according to acceleration limit value.The present invention is a kind of mode for automatically determining VAM characteristic calibrating parameters, which is not only simple efficient, and it is easy to the power performance and fuel-economy performance of vehicle during for assessing different VAM characterisitic parameters settings, therefore may be used to determine suitable VAM characteristics calibrating parameters.
Description
Technical field
The present invention relates to vehicle parameter calibration technique, in particular it relates to a kind of vehicle parameter calibration facility and
Method.
Background technology
Vehicle acceleration management (Vehicle Acceleration Management, hereinafter referred to as VAM) is special
Property be a kind of to be used for limiting the engine electronic control system characteristic of vehicle acceleration.VAM characteristics are main in car
The acceleration of vehicle is limited when zero load or underloading traveling, it is to avoid as the oil caused by driver's harsh driving
Consumption increase, so as to improve VE Vehicle Economy energy, and can reduce tire and biography to a certain extent
The abrasion of dynamic system, increases its service life.
There is certain blindness in the demarcation development process of the automatically controlled characteristics of current VAM, be substantially use
Real vehicle on-the-ground test means：If acceleration limitation is too many, oil-saving effect is relatively good, but vehicle accelerates
Overlong time, driver can feel that acceleration is powerless, and influence security；If acceleration is limited very little,
Then oil-saving effect is not obvious.It is simple to need to be debugged repeatedly by experiment just find dynamic property and fuel oil
Equalization point between economy, test period length, cost are high, workload is big, and environment, artificial etc.
Factor can influence to test uniformity.
The content of the invention
It is an object of the invention to provide a kind of vehicle parameter calibration facility and method, for solving by inhuman
The problem of vehicle parameter demarcation being carried out for the mode of experiment.
To achieve these goals, the invention provides a kind of vehicle parameter calibration facility, the equipment includes：
Receiving unit, for receiving vehicle parameter and acceleration limit value threshold value and corresponding with the acceleration limit value threshold value
Velocity amplitude, wherein the acceleration limit value threshold value includes peak acceleration limit value (i.e. acceleration limit value
Maximum) and minimum acceleration limit value (i.e. the minimum value of acceleration limit value)；Vehicle acceleration manages VAM
Characteristics Control unit, the opening and closing for controlling VAM characteristics；Simulation computing unit, it is and described
Receiving unit and the VAM Characteristics Controls unit are coupled, for what is opened in the VAM characteristics
In the case of according to the vehicle parameter to the acceleration time and accelerate oil consumption carry out simulation calculation；Control unit,
For acceleration time for being calculated according to the simulation computing unit and oil consumption is accelerated to determine VAM characteristic marks
Determine parameter；Wherein, in the case where the VAM characteristics are opened, described control unit is additionally operable to basis
Acceleration limit value controls the acceleration of vehicle.
Correspondingly, present invention also offers a kind of vehicle parameter scaling method, this method includes：Receive car
Parameter and acceleration limit value threshold value and velocity amplitude corresponding with the acceleration limit value threshold value, wherein it is described plus
Velocity constraint threshold value includes peak acceleration limit value and minimum acceleration limit value；In vehicle acceleration management
VAM characteristics are emulated in the case of opening according to the vehicle parameter to acceleration time and acceleration oil consumption
Calculate；The acceleration time obtained according to simulation calculation determines VAM characteristic calibrating parameters with acceleration oil consumption；
Wherein, in the case where the VAM characteristics are opened, the acceleration of vehicle is controlled according to acceleration limit value.
By above-mentioned technical proposal, the present invention is opened according to vehicle parameter by simulation calculation in VAM characteristics
Acceleration time in the case of opening and accelerate oil consumption, and determine according to simulation result VAM characteristic marks
Determine parameter, be a kind of mode for automatically determining VAM characteristic calibrating parameters, which is not only simple efficient,
And it is easy to the power performance and fuel economy of vehicle during for assessing different VAM characterisitic parameters settings
Can, therefore may be used to determine suitable VAM characteristics calibrating parameters.
Other features and advantages of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is, for providing a further understanding of the present invention, and to constitute a part for specification, with
Following embodiment is used to explain the present invention together, but is not construed as limiting the invention.
In accompanying drawing：
Fig. 1 is the block diagram for the vehicle parameter calibration facility that the present invention is provided；
Fig. 2 is acceleration limit graph in the case of the VAM characteristics that the present invention is provided are opened；
Fig. 3 is the flow chart that VAM characterisitic parameter demarcation is carried out by emulation mode that the present invention is provided；
And
Fig. 4 is the flow chart for the vehicle parameter scaling method that the present invention is provided.
Embodiment
The embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that
Embodiment described herein is merely to illustrate and explain the present invention, and is not limited to this hair
It is bright.
Fig. 1 is the block diagram for the vehicle parameter calibration facility that the present invention is provided, as shown in figure 1, the equipment bag
Include receiving unit, VAM Characteristics Controls unit, simulation computing unit and control unit.Receiving unit is used
In receiving vehicle parameter and acceleration limit value threshold value and velocity amplitude corresponding with the acceleration limit value threshold value, its
Described in acceleration limit value threshold value include peak acceleration limit value and minimum acceleration limit value；VAM characteristics
Control unit is used for the opening and closing for controlling VAM characteristics；Simulation computing unit and receiving unit and
VAM Characteristics Control units are coupled, for VAM characteristics open in the case of according to vehicle parameter pair
Acceleration time and acceleration oil consumption carry out simulation calculation；Control unit is used for what is calculated according to simulation computing unit
Acceleration time determines VAM characteristic calibrating parameters with acceleration oil consumption；Wherein, opened in VAM characteristics
In the case of, control unit is additionally operable to control the acceleration of vehicle according to acceleration limit value.
Vehicle parameter demarcation described above is carried out by the method for emulation, it is possible to use automobile is moved
Power and economic analysis field often build train's simulation model with business software, and utilize simulation software
Built-in part realizes VAM characteristic functions, can carry out acceleration management to virtual vehicle model,
Just it is available with the model assembly time acceleration management that simulation software is carried.
Vehicle parameter described above is the parameter needed for simulation software carries out simulation analysis, and different is imitative
True software or actual conditions are different, and required vehicle parameter may be slightly different, includes but is not limited to：Car
Zero load and fully loaded quality, vehicle front face area and air resistance coefficient, full engine load characteristic and oil consumption ten thousand
Have each gear ratios of characteristic, gearbox and transmission efficiency, back axle or speed ratio of main reducer and transmission efficiency,
Tyre model and rolling radius.In practical operation, operating personnel, which need to insert vehicle parameter, to be set up
Simulation model in corresponding module.
VAM Characteristics Controls unit is used to determine VAM to the operation of simulation software according to operating personnel
The opening and closing of characteristic.In the case where VAM characteristics are opened, control unit can control adding for vehicle
Speed, in the case where VAM characteristics are closed, the acceleration of vehicle will not be controlled.
In the case where VAM characteristics are opened, the acceleration of control unit control vehicle includes：In vehicle
Acceleration be more than acceleration limit value in the case of, control vehicle acceleration be equal to acceleration limit value.This
The song that art personnel should be appreciated that acceleration limit value here according to the speed of vehicle to be changed
Line, acceleration limit value is specifically addressed below by Fig. 2.
Acceleration limit value threshold value and limited with the acceleration that control unit can be received according to receiving unit
The corresponding speed of value threshold value is worth to complete acceleration limit graph, and Fig. 2 is the VAM that the present invention is provided
Acceleration limit graph in the case of characteristic is opened, as shown in Fig. 2 the speed of vehicle is different, acceleration limit
Value is also different.Specifically, control unit is additionally operable to：The acceleration limit value is determined, wherein：In car
Speed be more than or equal to velocity amplitude corresponding with minimum acceleration limit value in the case of, acceleration limit value
Equal to minimum acceleration limit value；It is less than or equal to speed corresponding with peak acceleration limit value in the speed of vehicle
In the case of angle value, acceleration limit value is equal to peak acceleration limit value；It is less than and minimum in the speed of vehicle
The corresponding velocity amplitude of acceleration limit value and more than in the case of velocity amplitude corresponding with peak acceleration limit value,
Acceleration limit value is obtained according to minimum acceleration limit value and peak acceleration limit value by linear interpolation.
Wherein, the selection of acceleration limit value threshold value is needed to meet certain condition, and control unit is additionally operable to
VAM characteristics calculate unloaded and full load the peak acceleration of vehicle in the case of closing；Wherein, vehicle
Peak acceleration of the acceleration limit value threshold value when vehicle is unloaded in the case of the closing of VAM characteristics expires with vehicle
Between peak acceleration during load.That is, acceleration rate threshold needs to close situation in VAM characteristics
Peak acceleration when lower vehicle is unloaded and selection between the peak acceleration of vehicle full load.
As shown in Fig. 2 transverse axis is the speed of vehicle, the longitudinal axis is the acceleration of vehicle, and shown curve is
For acceleration limit value, illustrated by taking Fig. 2 as an example, ACCVAM,Lim1 and ACCVAM,Lim2 be acceleration
Limit value threshold value, ACCVAM,Lim1 is peak acceleration limit value, ACCVAM,Lim2 be minimum acceleration limit value,
With ACCVAM,Lim1 corresponding velocity amplitude is VELVAM1, with ACCVAM,Lim2 corresponding velocity amplitudes are
VELVAM2, vehicle speed between VELVAM1 and VELVAMAcceleration limit value between 2 passes through
Linear interpolation is obtained, for example, the point (VEL in the coordinate system shown in connection figure 2VAM1,ACCVAM,Lim1)
With point (VELVAM2,ACCVAM,Lim2) line segment formed, passes through two coordinates of the point on the line segment
Speed be can obtain in VELVAM1 and VELVAMAcceleration limit value between 2.According to Fig. 2, work as car
Speed be less than or equal to VELVAMWhen 1, acceleration limit value is ACCVAM,Lim1；When the speed of vehicle
Degree is more than or equal to VELVAMWhen 2, acceleration limit value is ACCVAM,Lim2；When speed is more than VELVAM1
And less than VELVAMWhen 2, acceleration limit value is obtained by linear interpolation.
Specifically, there is an ASC (Anti-Slip Control, anti-skid controller module) in simulation model
Part, the ASC parts are an amplitude limiting controllers, are used for limiting driving wheel typically in simulation model
Trackslip, the present invention is using the control function of this part come volitional check vehicle acceleration.In simulation model,
As its input signal SWBeing trackslipped for tire, (engine torque is transferred to the driving force and F of driving wheelLTire is most
Big adhesive force FL,maxBetween ratio) signal and driver throttle signal when, can automatically control and start
The throttle signal of machine, so that the limitation driving wheel spike in simulation model.Its mechanism of action is：In emulation
During its monitor S alwaysWValue, as discovery SWMore than 1, i.e., when driving wheel will trackslip, ASC
Module meeting volitional check engine throttle, reduces engine torque output, makes driving force and tire maximum attached
Put forth effort (the i.e. S that balances each otherW=1), so as to avoid tire from trackslipping.Its mathematic(al) representation is：
FL,max=μ FN
Wherein：FLThe driving force of driving wheel is transferred to for engine torque；
FL,maxFor tire maximum adhesion power；
μ is the attachment coefficient between tire and ground；
FNFor normal reaction being produced by vehicle weight and by ground to tire.
The present invention utilizes its control characteristic, by input signal SWAcceleration ratio is changed to by the tire signal that trackslips
Value signal (ratio between vehicle acceleration and acceleration limit value), when it finds SWSignal is more than 1,
When i.e. vehicle acceleration is more than acceleration limit value when VAM characteristics are opened, ASC modules can volitional check
Engine throttle, reduces engine torque output, makes vehicle acceleration equal with VAM acceleration limit values
Weigh (i.e. SW=1), so that the acceleration limit when acceleration of vehicle is opened not over VAM characteristics
Value.Its mathematic(al) representation is：
Wherein, ACC is value of vehicle acceleration；
ACCVAM,LimAcceleration limit value during to be opened by VAM characteristics, i.e., the acceleration shown in Fig. 2
Spend limit value.
Wherein, control unit is calculated according to simulation computing unit acceleration time and accelerate oil consumption to determine
VAM characteristic calibrating parameters include：It is respectively smaller than and sets in advance in the acceleration time and acceleration oil consumption calculated
The current acceleration time is determined in the case of fixed time threshold and oil consumption threshold value and when preacceleration oil consumption is met
Vehicle performance requirement；Wherein, acceleration limit value threshold value is adjusted in the case where being unsatisfactory for vehicle performance requirement
Velocity amplitude corresponding with the acceleration limit value threshold value simultaneously to the acceleration time and accelerates oil consumption to be imitated again
It is true to calculate, until meeting vehicle performance requirement, it will add in the case where meeting vehicle performance requirement with current
The fast time and when the acceleration limit value threshold value corresponding to preacceleration oil consumption and with the acceleration limit value threshold value pair
The velocity amplitude answered is defined as VAM characteristic calibrating parameters.
Here VAM characteristic calibrating parameters refer to peak acceleration limit value, minimum acceleration limit value,
Velocity amplitude corresponding with peak acceleration limit value and velocity amplitude corresponding with minimum acceleration limit value, that is,
ACC in Fig. 2VAM,Lim1、ACCVAM,Lim2、VELVAM1、VELVAM2.It is true in this four values
After fixed, Fig. 2 curve is also determined that.Generally, the VAM under no-load condition need to only be calculated
Acceleration time when characteristic is opened and accelerate oil consumption, and according to acceleration time for being calculated under no-load condition and
Oil consumption is accelerated to adjust acceleration limit value threshold value and velocity amplitude corresponding with the acceleration limit value threshold value.Here
It should be noted that acceleration limit value threshold value should close feelings in VAM characteristics as described above
Peak acceleration when vehicle is unloaded under condition and it is adjusted between the peak acceleration of vehicle full load.
Fig. 3 is the flow chart that VAM characterisitic parameter demarcation is carried out by emulation mode that the present invention is provided,
As shown in figure 3, the flow includes：
Step 301, vehicle parameter and acceleration limit value threshold value are received and corresponding with the acceleration limit value threshold value
Velocity amplitude, the vehicle parameter include the parameter relevant with simulation calculation, can include but is not limited to above
Described in vehicle parameter, peak acceleration and full load of the acceleration limit value threshold value in zero load
Between peak acceleration.
Step 302, simulation model is set up, is set up by simulation software, concrete mode is art technology
The common knowledge of personnel, in this, it will not go into details.
Step 303, vehicle when VAM characteristics are closed is calculated respectively in the maximum of unloaded and full load to accelerate
Degree.
Step 304, acceleration limit value threshold value when setting VAM characteristics are opened and with the acceleration limit value
The corresponding velocity amplitude of threshold value, acceleration limit value threshold value and velocity amplitude corresponding with the acceleration limit value threshold value from
Receiving unit is received and obtained.
Step 305, calculate acceleration time when VAM characteristics are opened and accelerate oil consumption.
Step 306, whether the acceleration time and acceleration oil consumption calculated in judgment step 305 meets vehicle
Performance requirement, step 307 is performed in the case of satisfaction, step 304 is returned in the case of ungratified,
Return to step 304 reset acceleration limit value threshold value when VAM characteristics are opened and with the acceleration
The corresponding velocity amplitude of limit value threshold value, then recalculates acceleration time when VAM characteristics are opened and acceleration
Oil consumption, until judging the acceleration time within step 306 and accelerating oil consumption to meet vehicle performance requirement.Here
It should be noted that one group of acceleration limit value threshold value and velocity amplitude quilt corresponding with the acceleration limit value threshold value
Referred to as one data combination, then receiving unit can receive multiple data combinations, if a data group
Close the acceleration time obtained by simulation calculation and accelerate oil consumption to meet vehicle performance requirement, control is single
Member will choose a data combination again in the combination of multiple data and carry out simulation calculation.
Step 307, VAM characteristic calibrating parameters are determined, that is to say, that when determination adds in step 306
In the case that fast time and acceleration oil consumption meet vehicle performance requirement, the acceleration of vehicle performance requirement will be met
Acceleration limit value threshold value and speed corresponding with the acceleration limit value threshold value corresponding to time and acceleration oil consumption
Angle value is defined as VAM characteristic calibrating parameters.It should be appreciated that acceleration limit value threshold value includes maximum here
Acceleration limit value and minimum acceleration limit value, velocity amplitude corresponding with the acceleration limit value threshold value include and maximum
The corresponding velocity amplitude of acceleration limit value and velocity amplitude corresponding with minimum acceleration limit value.
Fig. 4 is the flow chart for the vehicle parameter scaling method that the present invention is provided, as shown in figure 4, this method
Including：Receive vehicle parameter and acceleration limit value threshold value and speed corresponding with the acceleration limit value threshold value
Value, wherein the acceleration limit value threshold value includes peak acceleration limit value and minimum acceleration limit value；In car
Acceleration management VAM characteristics to the acceleration time and accelerate oil consumption in the case of opening according to vehicle parameter
Carry out simulation calculation；The acceleration time obtained according to simulation calculation determines VAM characteristics with acceleration oil consumption
Calibrating parameters；Wherein, in the case where VAM characteristics are opened, vehicle is controlled according to acceleration limit value
Acceleration.
It should be noted that the detail and benefit of the vehicle parameter scaling method that the present invention is provided and sheet
The vehicle parameter calibration facility for inventing offer is similar, and in this, it will not go into details.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, still, the present invention is not limited
Detail in above-mentioned embodiment, can be to the present invention in the range of the technology design of the present invention
Technical scheme carry out a variety of simple variants, these simple variants belong to protection scope of the present invention.
It is further to note that each particular technique described in above-mentioned embodiment is special
Levy, in the case of reconcilable, can be combined by any suitable means.In order to avoid need not
The repetition wanted, the present invention no longer separately illustrates to various possible combinations.
The technical scheme provided by the present invention, has the advantages that：1st, for different vehicles
As long as modification design parameter can just be run, it is not necessary to build model again；2nd, the shadow of disturbing factor is avoided
Ring, simulation analysis of computer means can avoid disturbing factor to resulting uncertain influence, can be accurate
True reflects influence of the VAM characteristics calibrating parameters to vehicle performance；3rd, can be with from simulation analysis
Obtain, than experiment more fully data message, theories integration being provided for experiment；4th, save and test into
This, influence that can be before real vehicle on-the-ground test by Simulation Evaluation VAM characteristics to vehicle performance, and
And initial VAM calibration values can be provided for experiment, it is only necessary to a small amount of experiment is carried out on real vehicle to demarcation
Value is finely adjusted.
In addition, various embodiments of the present invention can be combined randomly, as long as its
Without prejudice to the thought of the present invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of vehicle parameter calibration facility, it is characterised in that the equipment includes：
Receiving unit, for receive vehicle parameter and acceleration limit value threshold value and with the acceleration limit value threshold value
Corresponding velocity amplitude, wherein the acceleration limit value threshold value includes peak acceleration limit value and minimum acceleration
Limit value；
Vehicle acceleration manages VAM Characteristics Control units, unlatching and pass for controlling VAM characteristics
Close；
Simulation computing unit, is coupled with the receiving unit and the VAM Characteristics Controls unit, uses
According to the vehicle parameter is to the acceleration time and accelerates oil consumption in the case of being opened in the VAM characteristics
Carry out simulation calculation；
Control unit, for the acceleration time calculated according to the simulation computing unit and acceleration oil consumption come really
Determine VAM characteristic calibrating parameters；
Wherein, in the case where the VAM characteristics are opened, described control unit is additionally operable to according to acceleration
Spend the acceleration that limit value controls vehicle.
2. equipment according to claim 1, it is characterised in that opened in the VAM characteristics
In the case of, described control unit controls the acceleration of the vehicle to include：
In the case where the acceleration of the vehicle is more than acceleration limit value, the acceleration of the vehicle is controlled
Equal to acceleration limit value.
3. equipment according to claim 2, it is characterised in that described control unit is additionally operable to：
The acceleration limit value is determined, wherein：
It is more than or equal to the feelings of velocity amplitude corresponding with the minimum acceleration limit value in the speed of vehicle
Under condition, the acceleration limit value is equal to the minimum acceleration limit value；
It is less than or equal to the feelings of velocity amplitude corresponding with the peak acceleration limit value in the speed of vehicle
Under condition, the acceleration limit value is equal to the peak acceleration limit value；And
It is less than velocity amplitude corresponding with the minimum acceleration limit value in the speed of vehicle and is more than and institute
In the case of stating the corresponding velocity amplitude of peak acceleration limit value, the acceleration limit value according to it is described most
Small acceleration limit value and the peak acceleration limit value are obtained by linear interpolation.
4. equipment according to claim 3, it is characterised in that described control unit is according to described
Acceleration time and accelerate oil consumption to determine that VAM characteristic calibrating parameters include that simulation computing unit is calculated：
Time threshold set in advance and oil consumption are respectively smaller than in the acceleration time and acceleration oil consumption calculated
The current acceleration time is determined in the case of threshold value and when preacceleration oil consumption meets vehicle performance requirement；
Wherein, in the case where being unsatisfactory for vehicle performance requirement adjust acceleration limit value threshold value and with the acceleration
Spend the corresponding velocity amplitude of limit value threshold value and simulation calculation is carried out to acceleration time and acceleration oil consumption again, until
Vehicle performance requirement is met, will be with current acceleration time and current in the case where meeting vehicle performance requirement
Accelerate acceleration limit value threshold value and velocity amplitude corresponding with the acceleration limit value threshold value corresponding to oil consumption true
It is set to VAM characteristic calibrating parameters.
5. the equipment according to claim 3 or 4, it is characterised in that described control unit is also used
In the peak acceleration that vehicle zero load and full load are calculated in the case of VAM characteristics closing；
Wherein, the acceleration limit value threshold value of vehicle is when vehicle is unloaded in the case of VAM characteristics closing
Peak acceleration and vehicle full load peak acceleration between.
6. a kind of vehicle parameter scaling method, it is characterised in that this method includes：
Vehicle parameter and acceleration limit value threshold value and velocity amplitude corresponding with the acceleration limit value threshold value are received,
Wherein described acceleration limit value threshold value includes peak acceleration limit value and minimum acceleration limit value；
When vehicle acceleration is managed in the case that VAM characteristics are opened according to the vehicle parameter to accelerating
Between and accelerate oil consumption carry out simulation calculation；
The acceleration time obtained according to simulation calculation determines VAM characteristic calibrating parameters with acceleration oil consumption；
Wherein, in the case where the VAM characteristics are opened, adding for vehicle, is controlled according to acceleration limit value
Speed.
7. method according to claim 6, it is characterised in that opened in the VAM characteristics
In the case of, controlling the acceleration of the vehicle includes：
In the case where the acceleration of the vehicle is more than acceleration limit value, the acceleration of the vehicle is controlled
Equal to acceleration limit value.
8. method according to claim 7, it is characterised in that this method also includes：
The acceleration limit value is determined, wherein：
It is more than or equal to the feelings of velocity amplitude corresponding with the minimum acceleration limit value in the speed of vehicle
Under condition, the acceleration limit value is equal to the minimum acceleration limit value；
It is less than or equal to the feelings of velocity amplitude corresponding with the peak acceleration limit value in the speed of vehicle
Under condition, the acceleration limit value is equal to the peak acceleration limit value；And
It is less than velocity amplitude corresponding with the minimum acceleration limit value in the speed of vehicle and is more than and institute
In the case of stating the corresponding velocity amplitude of peak acceleration limit value, the acceleration limit value according to it is described most
Small acceleration limit value and the peak acceleration limit value are obtained by linear interpolation.
9. method according to claim 8, it is characterised in that described to be obtained according to simulation calculation
Acceleration time and accelerate oil consumption to determine that VAM characteristic calibrating parameters include：
Time threshold set in advance and oil consumption are respectively smaller than in the acceleration time and acceleration oil consumption calculated
The current acceleration time is determined in the case of threshold value and when preacceleration oil consumption meets vehicle performance requirement；
Wherein, in the case where being unsatisfactory for vehicle performance requirement adjust acceleration limit value threshold value and with the acceleration
Spend the corresponding velocity amplitude of limit value threshold value and simulation calculation is carried out to acceleration time and acceleration oil consumption again, until
Vehicle performance requirement is met, will be with current acceleration time and current in the case where meeting vehicle performance requirement
Accelerate acceleration limit value threshold value and velocity amplitude corresponding with the acceleration limit value threshold value corresponding to oil consumption true
It is set to VAM characteristic calibrating parameters.
10. method according to claim 8 or claim 9, it is characterised in that this method also includes：
Unloaded and full load the peak acceleration of vehicle is calculated in the case of VAM characteristics closing；
Wherein, the acceleration limit value threshold value of vehicle is when vehicle is unloaded in the case of VAM characteristics closing
Peak acceleration and vehicle full load peak acceleration between.
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