CN107239038A - A kind of transient state throttle variable working condition drivability index recognizer under stable car speed - Google Patents
A kind of transient state throttle variable working condition drivability index recognizer under stable car speed Download PDFInfo
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Abstract
The invention discloses the transient state throttle variable working condition drivability index recognizer under a kind of stable car speed, including setting up the transient state throttle variable working condition test specification under Steady state speed, the automotive performance parameters such as accelerator open degree, acceleration, Che Du, time, engine speed, gear information are gathered by signal collecting device；Multi-source automotive performance Parameter fusion and discretization judgement, obtain the fragment of minimum operating mode unit, the differentiation of characteristic value is carried out again, obtain all evaluation indexes of transient state throttle under Steady state speed, the numerical relationship model that evaluation index and evaluation index score is set up by the self-characteristic of index again, the present invention provides the method from automotive performance parameter identification and evaluation index and index scoring for the objective evaluation of driving.
Description
Technical field
The present invention relates to the identification of transient state throttle variable working condition driving evaluation index and methods of marking.
Background technology
The application of high-efficiency energy-saving technology causes the driving quality of automobile to reduce.Subjective assessment mode is taken to evaluate automotive performance
The problems such as there is cost height, poor repeatability, has had a strong impact on the scalar period of vehicle.Exist to overcome subjective evaluation method
Subjective assessment system is modified to objective evaluation system by shortcoming, the characteristics of analyzing driving evaluation content.
The premise for realizing objective evaluation be how from substantial amounts of automotive performance parameter quickly obtain evaluation index and
Rational mathematical relationship will be set up between evaluation index and evaluation of estimate, therefore solves this problem and is realized before objective evaluation
Carry.
The content of the invention
Based on this, it is necessary to solve from a large amount of automotive performance parameter acquiring evaluation indexes the problem of and evaluation index and scoring
Relations problems can provide the index recognition methods of objective evaluation index there is provided a kind of for follow-up objective evaluation.
Above-mentioned purpose is achieved through the following technical solutions：
Transient state throttle variable working condition drivability index recognizer under a kind of stable car speed proposed by the present invention, specific steps are such as
Under：
(1) the transient state throttle variable working condition test specification set up under Steady state speed, gathers throttle by signal collecting device and opens
The automotive performance parameter such as degree, acceleration, Che Du, time, engine speed and gear information, is adopted specifically by sensor signal
Collection equipment is tested throttle in the small throttle of low speed under Steady state speed, low speed and low speed three kinds of situations of high throttle, described to survey
Try to travel after a period of time with a certain stabilizing speed for automobile, moment steps on the throttle pedal, obtain automobile energy in transient process
Enough characterize the automotive performance parameter of dynamic change；The collecting sensor signal equipment includes CRIO-9012 controllers, NI-
9215 data collecting instruments, the data collecting instruments of NI- 9862, CRIO-9012 controllers pass through NI-9215 collection of simulant signal module
Sensor signal is obtained with NI-9862 digital signal acquirings module；The vapour of accelerator open degree is obtained by NI-9215 data collecting instruments
Car performance parameter, the automobile of acceleration, engine speed, speed, time and gear is obtained by NI-9862 data collecting instruments
Can parameter；
(2) discretization judges, obtains the fragment of minimum operating mode unit；
Step (1) NI-9215 data collecting instruments are obtained to the data of accelerator open degree, and the data collecting instruments of NI- 9862 are obtained
To acceleration, engine speed, speed, time together with the data fusion of gear, according to priori, by judging speed
The vehicle speed value and accelerator open degree of stable state are triggered and are maintained at the starting position that certain certain value is minimum operating mode fragment, throttle
Aperture changes to the end position that 0 aperture is minimum operating mode fragment from certain certain value, finally gives minimum operating mode fragment；
(3) by the differentiation of characteristic value, all evaluation index values of transient state throttle under Steady state speed are obtained；
On the basis of the minimum operating mode fragment of the acquisition of completion identification stabilizing speed and accelerator open degree that step (2) is obtained,
Search acceleration and reach that 0.05g moment, acceleration reach that 95% moment of peak value, pedal go to desired value moment, acceleration
The maximum that reaches, pedal start triggering moment, acceleration and reach that peak value moment, gas pedal start triggering moment engine and turned
Fast value, acceleration reach that peak value moment engine speed value, pedal start the opening value of triggering moment, pedal and reach object time
Accelerator open degree value, acceleration wave peak value and acceleration wave valley, using the data of all lookups as characteristic value property set, pass through
All characteristic values in characteristic value property set are calculated, all evaluations that transient state throttle under Steady state speed is obtained with this refer to
Mark, the evaluation index includes rate of acceleration change, acceleration peak value, response time, operating lag, rotation speed change amount, pedal
Rate of change and recoil and the higher-order of oscillation；
(4) all evaluation index values obtained according to step (3), set up the mathematics of evaluation index value and evaluation index scoring
Relational model；Wherein：Rate of acceleration change, acceleration peak value, rotation speed change amount and pedal rate of change belong to positive index, evaluate
Index scoring increases with the increase of evaluation index value；Response time, operating lag, recoil, the higher-order of oscillation belong to negative sense and referred to
Mark, evaluation index scoring reduces with the increase of desired value.
In the present invention, the condition that the fragment of the minimum operating mode unit of transient state throttle is met under step (2) Steady state speed is：
(1) time of stable target vehicle speed is more than 10s；
(2) time that moment steps on the throttle is less than 0.1s；
(3) gas pedal, which is stepped on, will continue more than 5s after target or to peak accelerator；
(4) brake pedal and parking brake are totally released during operating mode is performed；
(5) car is in forward travel state in experimental stage；
(6) gearing regime automatic transmission.
In road of the present invention, transient state throttle characteristic value on the basis of minimum operating mode unit is differentiated under step (3) Steady state speed
Criterion be：
(1) first time acceleration reaches the 0.05g moment after gas pedal is triggered；
(2) reach that 95% peak acceleration reaches peak value moment after gas pedal is triggered for the first time；
(3) gas pedal goes to target throttle value moment and corresponding target value；
(4) acceleration reaches in the fragment of minimum operating mode unit maximum moment and correspondence maximum；
(5) gas pedal starts triggering moment and correspondence initial value；
(6) maximum and minimum value of the fragment intrinsic motivation tachometer value of minimum operating mode unit；
(7) acceleration reaches the acceleration wave peak value after maximum and acceleration wave valley.
In the present invention, evaluation index is prolonged including rate of acceleration change, acceleration peak value, response time, response in step (3)
Late, rotation speed change amount, pedal rate of change and recoil and the higher-order of oscillation, wherein：
Rate of acceleration change is that acceleration reaches that the 0.05g moment arrives in the transient state throttle varying load process under stable car is fast
Pickup reaches the variable quantity at 95% moment of peak value；
Acceleration peak value is that pedal goes to the maximum that desired value post-acceleration can reach；
Response time be perform operating mode in, pedal start needed for triggering moment reaches peak value moment to acceleration when
Between；
Operating lag starts triggering moment for pedal and reaches 0.05g moment required time to acceleration；Rotation speed change amount is
Gas pedal starts triggering moment and reaches that peak value moment engine speed changes size to acceleration；
Pedal rate of change is to start to be triggered to pedal in pedal to reach in the object time, the change of pedal；Recoil as steady
Reach acceleration peak value to the acceleration change size of next trough in transient state throttle variable working condition under speed；
The higher-order of oscillation is that the acceleration occurred after back attack phenomenon shakes repeatedly in the transient state throttle variable working condition under stable car speed
Swing.
In the present invention, the numerical relationship model includes：
(1) numerical relationship model of rate of acceleration change value and corresponding scoring
Wherein, rating1To accelerate the scoring of rate of change desired value；x1To accelerate rate of change desired value； a1, b1, c1, d1
It is the coefficient that model is determined previously according to objective acceleration this evaluation index value of rate of change of vehicle and subjective scoring；
(2) numerical relationship model of acceleration peak value desired value and corresponding scoring
Wherein, rating2For the scoring of acceleration peak value desired value；x2For acceleration peak value desired value； a2, b2, c2For mould
The coefficient that type is determined previously according to the objective acceleration peak value desired value of vehicle and subjective scoring；
(3) numerical relationship model of operating lag desired value and corresponding scoring
rating3=(a3-b3·log(x3))
Wherein, rating3For the scoring of operating lag desired value；x3For operating lag desired value；a3, b3It is advance for model
The coefficient determined according to the objective operating lag desired value of vehicle and subjective scoring；
(4) numerical relationship model of response time desired value and corresponding scoring
rating4=a4·sin(b4·x4+c4)+d4·sin(e4·x4+f4)
Wherein, rating4For the scoring of response time desired value；x4For response time desired value；a4, b4, c4, d4, e4, f4
The coefficient determined for model previously according to the objective response time desired value of vehicle and subjective scoring；
(5) numerical relationship model of rotation speed change figureofmerit value and corresponding scoring
Wherein, rating5For rotation speed change figureofmerit value and scoring；x5For rotation speed change figureofmerit value； a5, b5, c5,
d5The coefficient determined for model previously according to the objective rotation speed change figureofmerit value of vehicle and subjective scoring；
(6) numerical relationship model of pedal rate of change desired value and corresponding scoring
rating6=a6·exp(b6·exp(c6·x6))
Wherein, rating6For the scoring of pedal rate of change desired value；x6For rotation speed change figureofmerit value； a6, b6, c6For mould
The coefficient that type is determined previously according to the objective pedal rate of change desired value of vehicle and subjective scoring；
(7) desired value that recoils and the numerical relationship model of corresponding scoring
Wherein, rating7For the scoring for the desired value that recoils；x7For recoil desired value；a7, b7, c7, d7, e7, f7It is pre- for model
The coefficient first determined according to the objective recoil desired value of vehicle and subjective scoring.
(8) numerical relationship model of higher-order of oscillation desired value and corresponding scoring
Wherein, rating8For the scoring of higher-order of oscillation desired value；x8For higher-order of oscillation desired value；a8, b8, c8, d8, e8, f8
The coefficient determined for model previously according to the objective higher-order of oscillation desired value of vehicle and subjective scoring.
The beneficial effects of the present invention are：Propose a kind of while considering the test rule of engine and transmission system performance
Model, automatic identification operating mode and can refer to calibration method, and establish evaluation and refer to while being assessed for vehicle driving and proposing one kind
The relational model that mark scores with desired value, realizes the prediction scoring to desired value, and the present invention serves primarily in vehicle driving
The evaluation work of development process, can shortening the construction cycle, there is provided the result of objective quantification.
Brief description of the drawings
Fig. 1 is transient condition index recognizer flow chart under Steady state speed；
Fig. 2 is the fast transient state oil supply operating mode of stable car.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, by the following examples, and with reference to attached
Figure, is described in further details to the algorithm flow of the present invention.It should be appreciated that specific embodiment described herein is only to solve
The present invention is released, is not intended to limit the present invention.
Embodiment 1：Referring to Fig. 1 to Fig. 2, a kind of transient state throttle variable working condition driving of stable car speed of one embodiment of the invention
Index recognizer, applies in driving objective evaluation how acquisition objective evaluation refers to calibration method in automotive performance.Bag
Include
Transient state oil supply measurement condition specification under S1, Steady state speed, gathers accelerator open degree by signal collecting device, accelerates
The automotive performance parameter such as degree, Che Du, time, engine speed, gear information；；
It is that automobile is travelled after a period of time with a certain stabilizing speed including transient state oil supply under the Steady state speed, moment
Step on the throttle after pedal, a series of dynamic response occurs in automobile in itself.The purpose of the working condition measurement, is to imitate vehicle
During normal road traveling, automobile is in the response performance of overtaking process car and the quality of driving quality；
The measurement condition is throttle, the high throttle of low speed in the small throttle of low speed, low speed；It is steady that the small throttle of low speed orientates speed as
Pedal is stepped on the throttle to 40% in 20KM/H and more than moment after 10s；Throttle is that speed is steady in 20KM/H and more than 10s in low speed
Moment steps on the throttle pedal to 60% afterwards；The high throttle of low speed is that speed is steady to be stepped in 20KM/H and being stepped on the throttle more than moment after 10s
Plate is to 80%；
The data acquisition equipment includes CRIO-9012 controllers, NI-9215 collection of simulant signal module and NI-
9862 data signal acquisition modules, NI-9215 data collecting instruments obtain the data of accelerator open degree, and NI-9862 data acquisitions
Instrument obtains acceleration, engine speed, speed, time and gear；
The automotive performance parameter of the collection includes accelerator open degree, acceleration, Che Du, test period, engine speed, shelves
Position information；
S2, discretization judge, obtain the operating mode fragment of minimum unit；
The number that the different sensors such as acceleration, engine speed, speed, time, accelerator open degree and gear are gathered
According to being merged, according to the characteristics of transient condition, the time for the target vehicle speed 1) stablized in satisfaction is more than 10s under Steady state speed；
(2) time that moment steps on the throttle is less than 0.1s；(3) gas pedal, which is stepped on, will continue more than 5s after target or accelerate to peak value
Degree；(4) brake pedal and parking brake are totally released during operating mode is performed；(5) car is in forward travel state in experimental stage；
(6) start to perform point as operating mode using target vehicle speed, accelerator pedal signal in the case of gearing regime automatic transmission, it is logical according to priori
Cross and judge that the vehicle speed value and accelerator open degree of speed stable state are triggered and are maintained at certain certain value opening for minimum operating mode fragment
Beginning position, accelerator open degree changes to the end position that 0 aperture is minimum operating mode fragment from certain certain value, finally gives minimum operating mode
Fragment；
The differentiation of the automotive performance parameter attribute value of S3 equipment collection is calculated, and obtains all of transient state throttle under Steady state speed
Evaluation index；
The characteristic value differentiated on the basis of the minimum operating mode fragment of acquisition for completing identification stabilizing speed and accelerator open degree,
Search acceleration and reach that 0.05g moment, acceleration reach that 95% moment of peak value, pedal go to desired value moment, acceleration
The maximum that reaches, pedal start triggering moment, acceleration and reach that peak value moment, acceleration reach 0.05g moment, gas pedal
Start triggering moment engine speed value, acceleration and reach that peak value moment engine speed value, pedal start opening for triggering moment
Angle value, pedal reach the characteristic value property sets such as accelerator open degree value, acceleration wave peak value, the acceleration wave valley of object time.Institute
Stating evaluation index includes rate of acceleration change, acceleration peak value, response time, operating lag, rotation speed change amount, pedal change
Rate, recoil and the higher-order of oscillation；
Transient state throttle criterion of characteristic value on the basis of minimum operating mode unit is differentiated is under the Steady state speed：
(1) first time acceleration reaches the 0.05g moment after gas pedal is triggered；
(2) reach that 95% peak acceleration reaches peak value moment after gas pedal is triggered for the first time；
(3) gas pedal goes to target throttle value moment and corresponding target value；
(4) acceleration reaches in the fragment of minimum operating mode unit maximum moment and correspondence maximum；
(5) gas pedal starts triggering moment and correspondence initial value；
(6) maximum and minimum value of the fragment intrinsic motivation tachometer value of minimum operating mode unit；
(7) acceleration reaches the acceleration wave peak value after maximum and acceleration wave valley.
Evaluation index and the evaluation index calculation formula includes：
Rate of acceleration change is that acceleration reaches that the 0.05g moment reaches peak value to pickup during operating mode is performed
95% moment acceleration change；
agradient=0.95max (da/dt) (1)
Wherein a is that pedal starts to be triggered to the longitudinal acceleration of acceleration peak value process, and t is that pedal starts to be triggered to acceleration
Spend the corresponding time of peaking process.
Acceleration peak value is that pedal goes to the maximum that desired value post-acceleration reaches；
apeak=amax-amin (2)
Wherein amaxStart to be triggered to the maximum longitudinal acceleration of acceleration peak value process, a for pedalminStart to touch for pedal
It is dealt into the minimum longitudinal acceleration of acceleration peak value process.
Response time be perform operating mode in, pedal start needed for triggering moment reaches peak value moment to acceleration when
Between；
trt=tp-ti (3)
Wherein, tpStart triggering moment, t for pedaliAt the time of peak value being reached for longitudinal acceleration.
Operating lag starts triggering moment for pedal and reaches 0.05g moment required time to acceleration；
△ t=tp-t0.05g (4)
Wherein, tpStart triggering moment, t for pedal0.05gStepped on for longitudinal acceleration from triggering throttle is started
Plate reaches the 0.05g moment to longitudinal acceleration.
Rotation speed change amount starts triggering moment for gas pedal and reaches the change of peak value moment engine speed greatly to acceleration
It is small；
△ ω=ωmax-ωmin (5)
Wherein, ωmaxStart to be triggered to the maximum that acceleration reaches that rotating speed reaches in peaking process for gas pedal；
ωminStart to be triggered to the minimum value that acceleration reaches that rotating speed reaches in peaking process for gas pedal.
Pedal rate of change is to start to be triggered to pedal in pedal to reach in the object time, the change of pedal；
Wherein, pfFor target accelerator pedal stroke amount；piRequired accelerator pedal stroke amount during for stabilizing speed.
Recoil to reach acceleration peak value to the acceleration change size of next trough in execution operating mode；
akick=ap max-ap min (7)
Wherein, ap maxFor first local peaking after acceleration peak value；ap minFor first office after acceleration peak value
First trough after portion's peak value.
The higher-order of oscillation is to perform in operating mode, and the acceleration occurred after back attack phenomenon shakes repeatedly.
Wherein, ap max-iThe local maximum shaken after for recoil；ap min-iThe Local Minimum shaken after for recoil
Value.
S4, the evaluation index value and evaluation index scoring numerical relationship model include：
The numerical relationship model of rate of acceleration change value and corresponding scoring
Wherein, rating1To accelerate the scoring of rate of change desired value；x1To accelerate rate of change desired value； a1, b1, c1, d1
It is the coefficient that model is determined previously according to objective acceleration this evaluation index value of rate of change of vehicle and subjective scoring.
The numerical relationship model of acceleration peak value desired value and corresponding scoring
Wherein, rating2For the scoring of acceleration peak value desired value；x2For acceleration peak value desired value； a2, b2, c2For mould
The coefficient that type is determined previously according to the objective acceleration peak value desired value of vehicle and subjective scoring.
The numerical relationship model of operating lag desired value and corresponding scoring
rating3=(a3-b3·log(x3)) (11)
Wherein, rating3For the scoring of operating lag desired value；x3For operating lag desired value；a3, b3It is advance for model
The coefficient determined according to the objective operating lag desired value of vehicle and subjective scoring.The mathematics of response time desired value and corresponding scoring
Relational model
rating4=a4·sin(b4·x4+c4)+d4·sin(e4·x4+f4) (12)
Wherein, rating4For the scoring of response time desired value；x4For response time desired value；a4, b4, c4, d4, e4, f4
The coefficient determined for model previously according to the objective response time desired value of vehicle and subjective scoring.Rotation speed change figureofmerit value with it is right
The numerical relationship model that should be scored
Wherein, rating5For rotation speed change figureofmerit value and scoring；x5For rotation speed change figureofmerit value； a5, b5, c5,
d5The coefficient determined for model previously according to the objective rotation speed change figureofmerit value of vehicle and subjective scoring.
The numerical relationship model of pedal rate of change desired value and corresponding scoring
rating6=a6·exp(b6·exp(c6·x6)) (14)
Wherein, rating6For the scoring of pedal rate of change desired value；x6For rotation speed change figureofmerit value； a6, b6, c6For mould
The coefficient that type is determined previously according to the objective pedal rate of change desired value of vehicle and subjective scoring.
Recoil the numerical relationship model of desired value and corresponding scoring
Wherein, rating7For the scoring for the desired value that recoils；x7For recoil desired value；a7, b7, c7, d7, e7, f7It is pre- for model
The coefficient first determined according to the objective recoil desired value of vehicle and subjective scoring.
The numerical relationship model of higher-order of oscillation desired value and corresponding scoring
Wherein, rating8For the scoring of higher-order of oscillation desired value；x8For higher-order of oscillation desired value；a8, b8, c8, d8, e8, f8
The coefficient determined for model previously according to the objective higher-order of oscillation desired value of vehicle and subjective scoring.
Claims (5)
1. the transient state throttle variable working condition drivability index recognizer under a kind of stable car speed, it is characterised in that comprise the following steps that：
(1) the transient state throttle variable working condition test specification set up under Steady state speed, gathers accelerator open degree by signal collecting device, adds
The automotive performance parameter such as speed, Che Du, time, engine speed and gear information, sets specifically by collecting sensor signal
Standby that throttle in the small throttle of low speed under Steady state speed, low speed and low speed three kinds of situations of high throttle are tested, the test is
Automobile is travelled after a period of time with a certain stabilizing speed, and moment steps on the throttle pedal, and obtaining automobile being capable of table in transient process
Levy the automotive performance parameter of dynamic change；The collecting sensor signal equipment includes CRIO-9012 controllers, NI-9215 numbers
According to Acquisition Instrument, NI-9862 data collecting instruments, CRIO-9012 controllers pass through NI-9215 collection of simulant signal module and NI-
9862 digital signal acquiring modules obtain sensor signal；The automobile of accelerator open degree is obtained by NI-9215 data collecting instruments
Energy parameter, the automotive performance for obtaining acceleration, engine speed, speed, time and gear by NI-9862 data collecting instruments is joined
Number；
(2) discretization judges, obtains the fragment of minimum operating mode unit；
Step (1) NI-9215 data collecting instruments are obtained to the data of accelerator open degree, and NI-9862 data collecting instruments are added
Speed, engine speed, speed, time together with the data fusion of gear, according to priori, by judging that speed is stable
The vehicle speed value and accelerator open degree of state are triggered and are maintained at the starting position that certain certain value is minimum operating mode fragment, accelerator open degree
The end position that 0 aperture is minimum operating mode fragment is changed to from certain certain value, minimum operating mode fragment is finally given；
(3) by the differentiation of characteristic value, all evaluation index values of transient state throttle under Steady state speed are obtained；
On the basis of the minimum operating mode fragment of the acquisition of completion identification stabilizing speed and accelerator open degree that step (2) is obtained, search
Acceleration reaches that 0.05g moment, acceleration reach that 95% moment of peak value, pedal go to desired value moment, acceleration and reached
Maximum, pedal starts triggering moment, acceleration and reaches that peak value moment, gas pedal start triggering moment engine speed
Value, acceleration reach that peak value moment engine speed value, pedal start the opening value of triggering moment, pedal and reach object time
Accelerator open degree value, acceleration wave peak value and acceleration wave valley, using the data of all lookups as characteristic value property set, by right
All characteristic values are calculated in characteristic value property set, and all evaluation indexes of transient state throttle under Steady state speed are obtained with this,
The evaluation index includes rate of acceleration change, acceleration peak value, response time, operating lag, rotation speed change amount, pedal change
Rate and recoil and the higher-order of oscillation；
(4) all evaluation index values obtained according to step (3), set up the mathematical relationship of evaluation index value and evaluation index scoring
Model；Wherein：Rate of acceleration change, acceleration peak value, rotation speed change amount and pedal rate of change belong to positive index, evaluation index
Scoring increases with the increase of evaluation index value；Response time, operating lag, recoil, the higher-order of oscillation belong to negative sense index, comment
The scoring of valency index reduces with the increase of desired value.
2. the transient state throttle variable working condition drivability index recognizer under stable car speed according to claim 1, its feature exists
It is in the condition of the fragment satisfaction of the minimum operating mode unit of transient state throttle under step (2) Steady state speed：
(1) time of stable target vehicle speed is more than 10s；
(2) time that moment steps on the throttle is less than 0.1s；
(3) gas pedal, which is stepped on, will continue more than 5s after target or to peak accelerator；
(4) brake pedal and parking brake are totally released during operating mode is performed；
(5) car is in forward travel state in experimental stage；
(6) gearing regime automatic transmission.
3. the transient state throttle variable working condition drivability index recognizer under stable car speed according to claim 1, its feature exists
In transient state throttle under step (3) Steady state speed, the criterion of characteristic value is on the basis of minimum operating mode unit is differentiated：
(1) first time acceleration reaches the 0.05g moment after gas pedal is triggered；
(2) reach that 95% peak acceleration reaches peak value moment after gas pedal is triggered for the first time；
(3) gas pedal goes to target throttle value moment and corresponding target value；
(4) acceleration reaches in the fragment of minimum operating mode unit maximum moment and correspondence maximum；
(5) gas pedal starts triggering moment and correspondence initial value；
(6) maximum and minimum value of the fragment intrinsic motivation tachometer value of minimum operating mode unit；
(7) acceleration reaches the acceleration wave peak value after maximum and acceleration wave valley.
4. the transient state throttle variable working condition drivability index recognizer under stable car speed according to claim 1, its feature exists
In step (3) evaluation index include rate of acceleration change, acceleration peak value, the response time, operating lag, rotation speed change amount,
Pedal rate of change and recoil and the higher-order of oscillation, wherein：
Rate of acceleration change is that acceleration reaches that the 0.05g moment adds to automobile in the transient state throttle varying load process under stable car is fast
Speed reaches the variable quantity at 95% moment of peak value；
Acceleration peak value is that pedal goes to the maximum that desired value post-acceleration can reach；
Response time is to perform in operating mode, and pedal starts the time needed for triggering moment reaches peak value moment to acceleration；
Operating lag starts triggering moment for pedal and reaches 0.05g moment required time to acceleration；
Rotation speed change amount starts triggering moment for gas pedal and reaches that peak value moment engine speed changes size to acceleration；
Pedal rate of change is to start to be triggered to pedal in pedal to reach in the object time, the change of pedal；
Recoil to reach that the acceleration change of acceleration peak value to next trough is big in the transient state throttle variable working condition under stable car speed
It is small；
The higher-order of oscillation is that the acceleration occurred after back attack phenomenon shakes repeatedly in the transient state throttle variable working condition under stable car speed.
5. the transient state throttle variable working condition drivability index recognizer under stable car speed according to claim 1, its feature exists
Include in the numerical relationship model：
(1) numerical relationship model of rate of acceleration change value and corresponding scoring
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Wherein, rating1To accelerate the scoring of rate of change desired value；x1To accelerate rate of change desired value；a1, b1, c1, d1For model
Previously according to the objective coefficient for accelerating this evaluation index value of rate of change and subjective scoring to determine of vehicle；
(2) numerical relationship model of acceleration peak value desired value and corresponding scoring
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<msup>
<mrow>
<mo>(</mo>
<mfrac>
<mrow>
<mo>(</mo>
<msub>
<mi>x</mi>
<mn>2</mn>
</msub>
<mo>-</mo>
<msub>
<mi>b</mi>
<mn>2</mn>
</msub>
<mo>)</mo>
</mrow>
<msub>
<mi>c</mi>
<mn>2</mn>
</msub>
</mfrac>
<mo>)</mo>
</mrow>
<mn>2</mn>
</msup>
<mo>)</mo>
</mrow>
</mrow>
Wherein, rating2For the scoring of acceleration peak value desired value；x2For acceleration peak value desired value；a2, b2, c2It is pre- for model
The coefficient first determined according to the objective acceleration peak value desired value of vehicle and subjective scoring；
(3) numerical relationship model of operating lag desired value and corresponding scoring
rating3=(a3-b3·log(x3))
Wherein, rating3For the scoring of operating lag desired value；x3For operating lag desired value；a3, b3It is model previously according to car
The coefficient that objective operating lag desired value and subjective scoring are determined；
(4) numerical relationship model of response time desired value and corresponding scoring
rating4=a4·sin(b4·x4+c4)+d4·sin(e4·x4+f4)
Wherein, rating4For the scoring of response time desired value；x4For response time desired value；a4, b4, c4, d4, e4, f4For mould
The coefficient that type is determined previously according to the objective response time desired value of vehicle and subjective scoring；
(5) numerical relationship model of rotation speed change figureofmerit value and corresponding scoring
<mrow>
<msub>
<mi>rating</mi>
<mn>5</mn>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<mo>(</mo>
<msub>
<mi>a</mi>
<mn>5</mn>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>x</mi>
<mn>5</mn>
</msub>
<mo>+</mo>
<msub>
<mi>b</mi>
<mn>5</mn>
</msub>
<mo>)</mo>
</mrow>
<mrow>
<mo>(</mo>
<msub>
<mi>c</mi>
<mn>5</mn>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>x</mi>
<mn>5</mn>
</msub>
<mo>+</mo>
<msub>
<mi>d</mi>
<mn>5</mn>
</msub>
<mo>)</mo>
</mrow>
</mfrac>
</mrow>
Wherein, rating5For rotation speed change figureofmerit value and scoring；x5For rotation speed change figureofmerit value；a5, b5, c5, d5For mould
The coefficient that type is determined previously according to the objective rotation speed change figureofmerit value of vehicle and subjective scoring；
(6) numerical relationship model of pedal rate of change desired value and corresponding scoring
rating6=a6·exp(b6·exp(c6·x6))
Wherein, rating6For the scoring of pedal rate of change desired value；x6For rotation speed change figureofmerit value；a6, b6, c6It is pre- for model
The coefficient first determined according to the objective pedal rate of change desired value of vehicle and subjective scoring；
(7) desired value that recoils and the numerical relationship model of corresponding scoring
<mrow>
<msub>
<mi>rating</mi>
<mn>7</mn>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<mo>(</mo>
<msub>
<mi>a</mi>
<mn>7</mn>
</msub>
<mo>&CenterDot;</mo>
<msubsup>
<mi>x</mi>
<mn>7</mn>
<mn>2</mn>
</msubsup>
<mo>+</mo>
<msub>
<mi>b</mi>
<mn>7</mn>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>x</mi>
<mn>7</mn>
</msub>
<mo>+</mo>
<msub>
<mi>c</mi>
<mn>7</mn>
</msub>
<mo>)</mo>
</mrow>
<mrow>
<mo>(</mo>
<msub>
<mi>d</mi>
<mn>7</mn>
</msub>
<mo>&CenterDot;</mo>
<msubsup>
<mi>x</mi>
<mn>7</mn>
<mn>2</mn>
</msubsup>
<mo>+</mo>
<msub>
<mi>e</mi>
<mn>7</mn>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>x</mi>
<mn>7</mn>
</msub>
<mo>+</mo>
<msub>
<mi>f</mi>
<mn>7</mn>
</msub>
<mo>)</mo>
</mrow>
</mfrac>
</mrow>
Wherein, rating7For the scoring for the desired value that recoils；x7For recoil desired value；a7, b7, c7, d7, e7, f7For the advance root of model
The coefficient determined according to the objective recoil desired value of vehicle and subjective scoring.
(8) numerical relationship model of higher-order of oscillation desired value and corresponding scoring
<mrow>
<msub>
<mi>rating</mi>
<mn>8</mn>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<mo>(</mo>
<msub>
<mi>a</mi>
<mn>8</mn>
</msub>
<mo>&CenterDot;</mo>
<msubsup>
<mi>x</mi>
<mn>8</mn>
<mn>2</mn>
</msubsup>
<mo>+</mo>
<msub>
<mi>b</mi>
<mn>8</mn>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>x</mi>
<mn>8</mn>
</msub>
<mo>+</mo>
<msub>
<mi>c</mi>
<mn>8</mn>
</msub>
<mo>)</mo>
</mrow>
<mrow>
<mo>(</mo>
<msub>
<mi>d</mi>
<mn>8</mn>
</msub>
<mo>&CenterDot;</mo>
<msubsup>
<mi>x</mi>
<mn>8</mn>
<mn>2</mn>
</msubsup>
<mo>+</mo>
<msub>
<mi>e</mi>
<mn>8</mn>
</msub>
<mo>&CenterDot;</mo>
<msub>
<mi>x</mi>
<mn>8</mn>
</msub>
<mo>+</mo>
<msub>
<mi>f</mi>
<mn>8</mn>
</msub>
<mo>)</mo>
</mrow>
</mfrac>
</mrow>
Wherein, rating8For the scoring of higher-order of oscillation desired value；x8For higher-order of oscillation desired value；a8, b8, c8, d8, e8, f8For mould
The coefficient that type is determined previously according to the objective higher-order of oscillation desired value of vehicle and subjective scoring.
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| CN113029593A (en) * | 2021-03-26 | 2021-06-25 | 奇瑞新能源汽车股份有限公司 | Method and device for evaluating drivability of automobile |
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| CN113066197A (en) * | 2021-03-01 | 2021-07-02 | 东风汽车集团股份有限公司 | Method and device for evaluating constant-speed running performance of vehicle |
| CN113109056A (en) * | 2021-03-01 | 2021-07-13 | 东风汽车集团股份有限公司 | Method and device for evaluating acceleration performance of vehicle accelerator starting power |
| CN113281065A (en) * | 2021-07-23 | 2021-08-20 | 江铃汽车股份有限公司 | Dynamic test and evaluation method for working conditions of medium and small throttle of automatic transmission automobile |
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| CN113066198B (en) * | 2021-03-01 | 2022-05-06 | 东风汽车集团股份有限公司 | Method and device for evaluating vehicle accelerating performance after uniform speed running |
| CN113066197B (en) * | 2021-03-01 | 2022-05-06 | 东风汽车集团股份有限公司 | Method and device for evaluating constant-speed running performance of vehicle |
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| CN113029593A (en) * | 2021-03-26 | 2021-06-25 | 奇瑞新能源汽车股份有限公司 | Method and device for evaluating drivability of automobile |
| CN113281065A (en) * | 2021-07-23 | 2021-08-20 | 江铃汽车股份有限公司 | Dynamic test and evaluation method for working conditions of medium and small throttle of automatic transmission automobile |
| CN113433931A (en) * | 2021-08-02 | 2021-09-24 | 青驭汽车科技(太仓)有限公司 | Automobile CAN bus key signal analysis method based on characteristic working conditions |
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