CN106080192A - Automobile electric gasoline throttle control method - Google Patents
Automobile electric gasoline throttle control method Download PDFInfo
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- CN106080192A CN106080192A CN201610761914.9A CN201610761914A CN106080192A CN 106080192 A CN106080192 A CN 106080192A CN 201610761914 A CN201610761914 A CN 201610761914A CN 106080192 A CN106080192 A CN 106080192A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
- B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
- B60K28/10—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle
- B60K28/14—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle responsive to accident or emergency, e.g. deceleration, tilt of vehicle
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- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The present invention relates to a kind of automobile electric gasoline throttle control method, solve the deficiencies in the prior art, technical scheme is: be applicable to electric automobile or mixed electrical automobile, accelerator open degree synopsis and/or accelerator open degree comparison formula is set up for automobile gross weight, obtain current automobile gross weight, draw current responsive corrections value according to current automobile gross weight inquiry accelerator open degree synopsis or accelerator open degree comparison formula, throttle response is set according to the actual aperture of throttle and responsive corrections value.In described step one, the limit velocity of trampling set there are adjusting range, trample limit velocity size in adjusting range relevant to the proportional example of aperture of described Safety Redundancy electromagnetic valve, Safety Redundancy electromagnetic valve according to set trample limit velocity be transformed to correspondence aperture.
Description
Technical field
The present invention relates to the control method of a kind of throttle system, particularly to a kind of automobile electric gasoline throttle control method.
Background technology
General gas controls the aperture of air throttle and reaches to control the purpose of car speed, but now electric automobile or
Mixed electrical automobile starts commercially to show up prominently as emerging vehicle, and the control method of traditional gas is the most applicable, electricity
Although the gas of electrical automobile or mixed electrical automobile is to be called throttle but the output of his motor to be controlled comes
Reach to control the purpose of output, generally, be to detect accelerator open degree conversion to become output numerical value, then send driving life
Order makes motor export corresponding power.
Of the prior art: a kind of accelerator pedal multi-section touch sensing type oil saving and device, the present invention arranges one can
The Multistage touch type fuel economizing device of accelerator pedal promoted by accelerator pedal of automobile, makes this Multistage touch type fuel economizing device of accelerator pedal
When being depressed by accelerator pedal of automobile, the segment distance that often moves just produces a slight unidirectional resistance to accelerator pedal of automobile,
By this slight unidirectional resistance make driver can aperture that significantly sense of touch is reached to gas, simultaneously by should
Slight unidirectional resistance makes driver reliably to be stablized in this aperture by throttle, thus reaches the purpose of fuel-economizing.Through examination
Test, the present invention is arranged on traditional automobile, when automobile travels in city, generally can reduce the oil of 10%～15%
Consumption；When automobile travels on expressway, the oil consumption of 5%～10% generally can be reduced.The present invention not only has fuel-economizing effect
The best advantage, but also there is advantage simple to operate, that be used conveniently and safely.This prior art is documented in: application number:
CN201010215290.3, in the Chinese patent literature in publication date on January 11st, 2012.
But in prior art, there is accelerator open degree and automobile engine output is the most corresponding, the most once automobile
Load-carrying change, trample throttle amplitude identical time, automobile engine output is constant, and the final response of automobile but there occurs change
Change, although this is the problem the most always existed, but for driver, driving experience has also suffered from necessarily
Impact.
Summary of the invention
It is an object of the invention to solve above-mentioned prior art accelerator open degree and automobile engine output is unique
Correspondence, the most once carload change, trample throttle amplitude identical time, automobile engine output is constant, and automobile is
Response but there occurs change eventually, although this is the problem the most always existed, but for driver, drives body
Test the problem having also suffered from certain impact, it is provided that a kind of automobile electric gasoline throttle control method.
The technical solution adopted for the present invention to solve the technical problems is: a kind of automobile electric gasoline throttle control method, is suitable for
In electric automobile or mixed electrical automobile, comprise the following steps:
Step one: set up accelerator open degree synopsis and/or accelerator open degree comparison formula for automobile gross weight, read standard configuration
Illuminated, acquisition automobile are demarcated gravimetric value by parameter and the accelerator open degree automobile electric output power preset, and are set with and trample limit speed
Degree, if when trampling throttle, throttle speed of action more than trampling limit velocity, then stops to each tire output, and to
Automobile ECU sends control signal；
Step 2: obtain current real-time bus gross weight；
Step 3: if current real-time bus gross weight demarcates gravimetric value less than or equal to described automobile, perform step 4, otherwise perform
Step 5；
Step 4: automobile calculates standard electric output according to real-time accelerator open degree, each tire of automobile is according to power-division ratios
Export with standard electric output, then repeated execution of steps two；
Step 5: the numeric ratio that automobile demarcates gravimetric value and current real-time bus gross weight according to automobile obtains responsive corrections value,
Automobile calculates standard electric output according to real-time accelerator open degree, and each tire of automobile exports with standard electric according to power-division ratios
Power, is then multiplied by responsive corrections value and exports as final automobile electric output power, then re-execute step 2.Drive
Person uses motor pattern, common driving model and cruise mode all can calculate responsive corrections value in the way of correspondence is different, response
Correction value reaches rational numerical value, and the impression after making driver trample throttle substantially conforms to corresponding pattern.
The mode that have employed accelerator open degree synopsis or comparison formula in the present invention carrys out corresponding current automobile gross weight, solves
When the load-carrying difference of automobile, the problem that throttle response can change；Reach to arrange car according to live load information
Throttle response, throttle response can keep constant or similar effect under different load-carryings.
As preferably, below gas pedal, it is equipped with a L-shaped air hose, in L-shaped air hose, is equipped with piston rod, institute
Stating the upper end of air hose towards gas pedal, the upper end of described piston rod is fixing with described gas pedal lower surface to be connected, described L
The lower end of shape air hose offers two passages, and the aperture sum of two passages is less than the diameter of the upper end of air hose, its
In be equipped with Safety Redundancy electromagnetic valve on a described passage, described Safety Redundancy electromagnetic valve is connected with automobile ECU, described
In step one, the limit velocity of trampling of setting there are adjusting range, trample limit velocity in adjusting range size with described
The proportional example of aperture of Safety Redundancy electromagnetic valve be correlated with, Safety Redundancy electromagnetic valve according to set trample limit velocity be transformed to right
The aperture answered.
As preferably, in described step 2, after automobile starting, just carry out an automobile at interval of a scheduled time T
Condition detection, detection data include vehicle speed measurement VtWith the output drawn by the electric drive power superposition of each driving motor to horse
The total electric drive power P reachedt, the pitching angle Theta of headstock tailstock longitudinal direction line and horizontal planetDefeated with the electricity for predetermined value
Go out merit conversion efficiency C to mechanical power；Automobile calculates draw current vehicle weight according to total electric drive power and change speed；
If the angle of pitch of car is zero, the real-time car quality between t and t+1 moment is M(t+t+1)/2Carry out according to following formula
Calculate:
M(t+t+1)/2= 2×P(t+t+1)/2×T×C/(Vt+1 2-Vt 2)。
If the angle of pitch of car is not zero, the real-time car quality between t and t+1 moment is M(t+t+1)/2According to following calculation
Formula calculates:
M(t+t+1)/2= 2×P(t+t+1)/2×T× C/(Vt+1 2-Vt 2)×(1-Sin(Theta(t+t+1)/2))。
In described step one, gravimetric value demarcated by automobile, has the most been imported among control system when car dispatches from the factory, standard
Car weight is pushed by wireless cloud and is modified；
In described step one, automobile is demarcated standard body weight values+curb weight value+default fuel tank that gravimetric value is driver and is carried
Fuel weight value.
As preferably, shoot the rubbing surface of automobile tire, carry out gray processing process successively and except distortion processes, according to automobile
The decorative pattern depth of the rubbing surface of tire determines the coefficient of friction meansigma methods of current automobile tire, puts down the coefficient of friction of automobile tire
Average carries out segmentation, and the coefficient of friction meansigma methods of every section of automobile tire is all to there being a coefficient of friction correction value, in step 5
In, if automobile is the threshold value that cornering operation and coefficient of friction meansigma methods are less than setting, then at automobile according to standard electric output
After be multiplied by coefficient of friction correction value after be multiplied by responsive corrections value again and export as final automobile electric output power, then repeat
Perform step 2.
As preferably, setting up frictional force synopsis, in frictional force synopsis, model and the Query Value of each automobile tire are equal
To there being a friction force value, the first rubbing surface shooting automobile tire, after carrying out gray processing process and processing except distortion, record
On current automobile tire rubbing surface, the color distortion value of several points is as difference reference value, after automobile starting, shoots automobile
The rubbing surface of tire, after carrying out gray processing process and processing except distortion, records several points on current automobile tire rubbing surface
Color distortion value, as comparison in difference value, rubs as Query Value inquiry according to the reduced value of comparison in difference value with difference reference value
Power synopsis, it is thus achieved that the friction force value of the rubbing surface of current automobile tire.
Frictional force is too small when, have the when that the sensing of automobile starting speed and acceleration being with new tire bigger not
With, therefore for automobile tire frictional force less when increase power output, improve automobile tire stress, can be by automobile
Driving experience is maintained at a suitable scope.
As preferably, described accelerator open degree synopsis includes several current weight setting values, and each current weight sets
Value is all to there being a responsive corrections value, and the quantity of described current weight setting value sets manually, and current weight value is by being subordinate to
Genus degree function calculates the degree of membership obtained in current weight setting value, is multiplied by each weight setpoint value by degree of membership corresponding
The mode superposition of responsive corrections value obtains final responsive corrections value.
As preferably, in performing described step 5, the acceleration transducer in automobile obtains current acceleration changing value
As accelerating value of feedback, acceleration, as accelerating standard value, is fed back by the acceleration change standard value preset in standard configuration parameter
Value contrasts with accelerating standard value, if accelerating value of feedback more than accelerating standard value, reduces when next time calculates responsive corrections value
Responsive corrections value；If accelerating value of feedback less than accelerating standard value, reduce responsive corrections value when next time calculates responsive corrections value.
As preferably, to there being a standard response time in described acceleration standard value, if accelerating value of feedback equal to accelerating
Standard value, and accelerate feedback response time then employing when next time calculates responsive corrections value less than standard response time of value of feedback
Dynamic response correction value, the most first reduces the response that the responsive corrections value calculated returns to calculate after a given time and repaiies
On the occasion of.
As preferably, the power-division ratios of each tire of described automobile is standard configuration parameter, the weight carried by wheel
Gauge calculates current real-time bus gross weight and position of centre of gravity, and extraction real time barycentre position is inclined with the position of centre of gravity preset
Moving vector, if offset vector keeps in the given time, then acquisition current offset vector is as value of calculation, with automobile transverse axis as X
Axle automotive ordinate axis is that Y-axis decomposes current offset vector, according to the tire power of the current offset resolution of vectors each wheel of value correction
Distribution ratio.
As preferably, in the tire power-division ratios of all wheels, 98% is distribution definite value, and the tire power of all wheels divides
In proportioning, 2% is distribution regulated value, distributes regulated value and be allocated according to the allocation proportion of distribution definite value in default setting, root
Only distribution regulated value is carried out when being allocated according to the tire power-division ratios of the current offset resolution of vectors each wheel of value correction
Distribution；X-axis and Y-axis are fixing axle, calculate in current offset vector component X-axis accounting in X-axis in X-axis, calculate and working as
Front offset vector is component Y-axis accounting in Y-axis in Y-axis,
Vehicle right and left both sides are equal to towards the regulated value sum of distribution in real time of wheel before and after position of centre of gravity side:
X-axis accounting × 2 × distribution regulated value；
In vehicle right and left both sides, in real time distribution regulated value sum towards position of centre of gravity side front and back wheel is not equal to:
Distribution regulated value-(X-axis accounting × 2 × distribution regulated value)；
Before and after automobile, in both sides, in real time distribution regulated value sum towards the left and right wheels of position of centre of gravity side is equal to:
Y-axis accounting × 2 × distribution regulated value；
Before and after automobile, in both sides, in real time distribution regulated value sum towards position of centre of gravity side left and right wheels is not equal to:
Distribution regulated value-(Y-axis accounting × 2 × distribution regulated value)；
The realtime power distribution ratio of each wheel of automobile equal in real time distribution regulated value and distribution definite value and.
The present invention is so arranged, and mainly prevents too much power to distribute, and causes excessive or too small power to be distributed, this
Sample influences whether the stability that vehicle is overall, although the most also can there to be compensation in counterweight, but once carry out turning
Curved or brake, can large effect to vehicle safety and maneuverability.The present invention provides certain compensation, it is possible to for
The change of center of gravity compensates, and the biggest distribution definite value ensure that safety and the maneuverability of automobile entirety.
The substantial effect of the present invention is: the present invention have employed accelerator open degree synopsis or comparison formula mode come right
Automobile gross weight before should, solves when the load-carrying difference of automobile, the problem that throttle response can change；Reach basis
Live load information arranges the throttle response of vehicle, and throttle response can keep constant or similar effect under different load-carryings
Really.
Detailed description of the invention
Below by specific embodiment, technical scheme is described in further detail.
Embodiment 1:
A kind of automobile electric gasoline throttle control method, it is adaptable to electric automobile or mixed electrical automobile, sets up throttle for automobile gross weight
Aperture synopsis and/or accelerator open degree comparison formula, it is thus achieved that current automobile gross weight,
Current responsive corrections is drawn according to current automobile gross weight inquiry accelerator open degree synopsis or accelerator open degree comparison formula
Value, arranges throttle response according to the actual aperture of throttle and responsive corrections value.
Comprise the following steps:
Step one: read standard configuration parameter and illuminated, acquisition automobile are demarcated by the accelerator open degree automobile electric output power preset
Gravimetric value；
Step 2: obtain current real-time bus gross weight；
Step 3: if current real-time bus gross weight demarcates gravimetric value less than or equal to described automobile, perform step 4, otherwise perform
Step 5；
Step 4: automobile calculates standard electric output according to real-time accelerator open degree, each tire of automobile is according to power-division ratios
Export with standard electric output, then repeated execution of steps two；
Step 5: the numeric ratio that automobile demarcates gravimetric value and current real-time bus gross weight according to automobile obtains responsive corrections value,
Automobile calculates standard electric output according to real-time accelerator open degree, and each tire of automobile exports with standard electric according to power-division ratios
Power, is then multiplied by responsive corrections value and exports as final automobile electric output power, then re-execute step 2.
In described step 2, the weight meter carried by wheel calculates current real-time bus gross weight.
In described step 2, after automobile starting, just carry out the detection of condition of the vehicle at interval of a scheduled time T,
Detection data include vehicle speed measurement VtWith total to motor of output drawn by the electric drive power superposition of each driving motor
Electric drive power Pt, the pitching angle Theta of headstock tailstock longitudinal direction line and horizontal planetWith the electric output work for predetermined value to machine
Conversion efficiency C of tool merit；Automobile calculates draw current vehicle weight according to total electric drive power and change speed.
If the angle of pitch of car is zero, the real-time car quality between t and t+1 moment is M(t+t+1)/2According to following formula
Calculate:
M(t+t+1)/2= 2×P(t+t+1)/2×T×C/(Vt+1 2-Vt 2)。
If the angle of pitch of car is not zero, the real-time car quality between t and t+1 moment is M(t+t+1)/2According to following calculation
Formula calculates:
M(t+t+1)/2= 2×P(t+t+1)/2×T× C/(Vt+1 2-Vt 2)×(1-Sin(Theta(t+t+1)/2))。
In described step one, gravimetric value demarcated by automobile, has the most been imported among control system when car dispatches from the factory, standard
Car weight is pushed by wireless cloud and is modified.
In described step one, standard body weight values+curb weight value+default fuel tank that gravimetric value is driver demarcated by automobile
Carry fuel weight value.
The rubbing surface of shooting automobile tire, carries out gray processing process and successively except distortion processes, and concrete mode is: sets up and rubs
Wiping power synopsis, in frictional force synopsis, the model of each automobile tire and Query Value are all to having a friction force value, for the first time
The rubbing surface of shooting automobile tire, after carrying out gray processing process and processing except distortion, if recording on current automobile tire rubbing surface
The color distortion value of dry point is as difference reference value, after automobile starting, and the rubbing surface of shooting automobile tire, carry out gray processing
After processing and processing except distortion, record on current automobile tire rubbing surface color distortion values of several points as comparison in difference
Value, inquires about frictional force synopsis according to the reduced value of comparison in difference value with difference reference value as Query Value, it is thus achieved that current automobile
The friction force value of the rubbing surface of tire.
The decorative pattern depth of the rubbing surface according to automobile tire determines the coefficient of friction meansigma methods of current automobile tire, to automobile
The coefficient of friction meansigma methods of tire carries out segmentation, and the coefficient of friction meansigma methods of every section of automobile tire is all to there being a coefficient of friction
Correction value, in step 5, if automobile be cornering operation and coefficient of friction meansigma methods less than the threshold value set, then automobile according to
It is multiplied by responsive corrections value after being multiplied by coefficient of friction correction value after standard electric output again to enter as final automobile electric output power
Row output, then repeated execution of steps two.
Described accelerator open degree synopsis includes several current weight setting values, and each current weight setting value is all to having
One responsive corrections value, the quantity of described current weight setting value sets manually, if current weight is positioned at two current weight
Between setting value, then the response calculating current weight corresponding according to current weight ratio between two current weight setting values is repaiied
On the occasion of.
Such as current weight is T2, needs to obtain responsive corrections value X2, and have recorded weight T1 in accelerator open degree synopsis
Corresponding responsive corrections value X1 and weight T3 correspondence responsive corrections value X3, if T1 < T2 < T3, then X2=(T2/ (T1+T3)) ×
(X1+X3).
In performing described step 5, it is anti-as accelerating that the acceleration transducer in automobile obtains current acceleration changing value
Feedback value, the acceleration change standard value preset in standard configuration parameter, as accelerating standard value, will be accelerated value of feedback and accelerate mark
Quasi-value contrasts, if accelerating value of feedback more than accelerating standard value, reduces responsive corrections when next time calculates responsive corrections value
Value；If accelerating value of feedback less than accelerating standard value, reduce responsive corrections value when next time calculates responsive corrections value.Described acceleration
To there being a standard response time in standard value, if accelerating value of feedback equal to accelerating standard value, and accelerate the feedback of value of feedback
Response time then uses dynamic response correction value less than standard response time when next time calculates responsive corrections value, the most first reduces meter
The responsive corrections value drawn returns to the responsive corrections value calculated after a given time.Described preset time is 1 second, fall
The amplitude of low current responsive corrections value is equal to feedback response time and 1/4th of the ratio of standard response time.
The power-division ratios of each tire of described automobile is standard configuration parameter, and the weight meter carried by wheel is calculated
Go out current real-time bus gross weight and position of centre of gravity, extract the offset vector of real time barycentre position and the position of centre of gravity preset, if
Offset vector keeps in the given time, then acquisition current offset vector is as value of calculation, with automobile transverse axis for X-axis automotive ordinate axis
Current offset vector is decomposed, according to the tire power-division ratios of the current offset resolution of vectors each wheel of value correction for Y-axis.
In the tire power-division ratios of all wheels, 98% is distribution definite value, in the tire power-division ratios of all wheels 2%
For distribution regulated value, default setting distributes regulated value and is allocated according to the allocation proportion of distribution definite value, according to current inclined
Only distribution regulated value is allocated when the tire power-division ratios of the shifting resolution of vectors each wheel of value correction is allocated.
The power-division ratios of each tire of described automobile is standard configuration parameter, and the weight meter carried by wheel is calculated
Go out current real-time bus gross weight and position of centre of gravity, extract the offset vector of real time barycentre position and the position of centre of gravity preset, if
Offset vector keeps in the given time, then acquisition current offset vector is as value of calculation, and with automobile transverse axis as X-axis, automobile is indulged
Axle is that Y-axis decomposes current offset vector, according to the tire power-division ratios of the current offset resolution of vectors each wheel of value correction.
X-axis and Y-axis are fixing axle, calculate in current offset vector component X-axis accounting in X-axis in X-axis, calculate
Current offset vector is component Y-axis accounting in Y-axis in Y-axis,
Vehicle right and left both sides are equal to towards the regulated value sum of distribution in real time of wheel before and after position of centre of gravity side:
(X-axis accounting+0.5) × distribution regulated value；
In vehicle right and left both sides, in real time distribution regulated value sum towards position of centre of gravity side front and back wheel is not equal to:
Distribution regulated value-(X-axis accounting+0.5) × distribution regulated value；
Before and after automobile, in both sides, in real time distribution regulated value sum towards the left and right wheels of position of centre of gravity side is equal to:
(Y-axis accounting+0.5) × distribution regulated value；
Before and after automobile, in both sides, in real time distribution regulated value sum towards position of centre of gravity side left and right wheels is not equal to:
Distribution regulated value-(Y-axis accounting+0.5) × distribution regulated value)；
The realtime power distribution ratio of each wheel of automobile equal in real time distribution regulated value and distribution definite value and.
Concrete example is as follows: unit's point i.e. X-axis and the center of Y-axis are set in the center of automobile, left front, right before, left back
Four tires rear with the right side are recorded as LA, LB, LC and LD, it is assumed that become center of gravity after load-carrying and are positioned at the right front portion that automobile is overall, deduct sky
Especially by calculating after the side-play amount itself having during load, the X position of position of centre of gravity is at the 50% of X-axis forward, and center of gravity
The Y location of position is at the 50% of Y-axis forward, then it is known that X-axis accounting is 0.5/2=0.25, and Y-axis accounting is also 0.5/
2=0.25, distribution regulated value is 2(%), then LA+LB=1.5, LC+LD=0.5, LB+LD=1.5, LA+LC=0.5 and, center of gravity position
In the overall right front portion of automobile so the distribution regulated value that left back portion obtains is 0, can draw accordingly, the distribution of distribution regulated value
Scheme is: LA:0.5, LB:1, LC:0, LD:0.5.
Being set with in step one and trample limit velocity, if when trampling throttle, throttle speed of action is more than trampling the limit
Speed, then stop to each tire output, and send control signal to automobile ECU.
The mode that have employed accelerator open degree synopsis or comparison formula in the present invention carrys out corresponding current automobile gross weight, solves
When the load-carrying difference of automobile, the problem that throttle response can change；Reach to arrange car according to live load information
Throttle response, throttle response can keep constant or similar effect under different load-carryings.Can basis when of use
Demand is from the scope of application of Row sum-equal matrix accelerator open degree synopsis, such as during in fine motion scope with close to the limit range that aperture is maximum
The form using accelerator open degree synopsis obtains responsive corrections value, and uses comparison public affairs accelerator open degree reaches intermediate range when
The mode of formula obtains responsive corrections value, the purpose of do so primarily to improve experience and the safety of user,
Such as, in the case of heavy weight, sound is obtained close to the form of employing accelerator open degree synopsis when the limit range that aperture is maximum
Answer correction value, the maximum improving responsive corrections value can be limited, it is therefore prevented that situation about exporting at full capacity for a long time, more may be used simultaneously
To offset, windage etc. is original ignores increasing of factor, reaches higher accuracy, meet throttle response constant in the case of protect
Demonstrate,proved safety, certain the application limited and must make in two ways, in fact only with accelerator open degree synopsis or
It is all feasible only with accelerator open degree comparison formula, such as, uses and also have through the accelerator open degree synopsis that correction is repeated several times
The most comfortable driving experience may be obtained so that accelerator open degree change and regular gasoline car closer to.In the present invention, throttle
Aperture comparison formula can be deduced by the basis of T1/W1=T2/ (W1+W2), turns round according to the unloaded output that existing T1 is initial
Square, W1 is empty-weight, and T2 is for export moment of torsion in real time, and W2 is loading capacity, the simplest accelerator open degree comparison that the present invention uses
Formula: responsive corrections value=real-time weight/initial setting weight.Certainly, in the present invention, accelerator open degree comparison formula can be by user
Just write amendment in conjunction with practical situation, including the setting of initial setting weight, temperature parameter, the introducing of windage, all can carry out in real time
Set.
Embodiment 2:
The present embodiment is substantially the same manner as Example 1, and the automobile in embodiment 2 is equipped with a L-shaped air below gas pedal
Pipe, is equipped with piston rod in L-shaped air hose, the upper end of described air hose is towards gas pedal, the upper end of described piston rod and institute
Stating the fixing connection of gas pedal lower surface, the lower end of described L-shaped air hose offers two passages, the aperture of two passages
Sum, less than the diameter of the upper end of air hose, one of them described passage is equipped with Safety Redundancy electromagnetic valve, described safety
Redundant electric magnet valve is connected with automobile ECU, and in step one, the limit velocity of trampling of setting there are adjusting range, tramples the limit
Speed size in adjusting range is relevant to the proportional example of aperture of described Safety Redundancy electromagnetic valve, Safety Redundancy electromagnetic valve according to
Set trample limit velocity be transformed to correspondence aperture.
In step one, if throttle speed of action is more than trampling limit velocity, then stop to each tire output, and
After automobile ECU sends control signal, Safety Redundancy electromagnetic valve completely closes, when automobile ECU detects that automobile stops fortune completely
After Dong, Safety Redundancy electromagnetic valve reopens completely.
In the present invention, adding the air hose of L-shaped, so arrange, once throttle and brake are got wrong, carry out bringing to a halt time
Time can stop the generation of mistake by the resistance of air from hardware aspect, and meanwhile, setting rational electromagnetic valve aperture can protect
Card when trample throttle foot feel be to maintain consistent, it is possible to reach to control safety consistent with feel.
Embodiment 3:
The present embodiment is substantially the same manner as Example 1, and difference is: the power-division ratios of two tires of described vehicle front
For standard configuration parameter, the weight meter carried by wheel calculates current real-time bus gross weight and position of centre of gravity, extracts
Real time barycentre position and the offset vector of the position of centre of gravity preset, if offset vector keeps in the given time, then obtain current
Offset vector, as value of calculation, decomposes current offset vector for X-axis automotive ordinate axis for Y-axis with automobile transverse axis, inclined according to current X-axis
Move the tire power-division ratios of resolution of vectors value direct proportion two wheels of correction front-wheel.In the tire power-division ratios of all wheels
94% is distribution definite value, and in the tire power-division ratios of all wheels, 6% is distribution regulated value, distributes regulated value in default setting
Allocation proportion according to distribution definite value is allocated, and divides according to the tire power of the current offset resolution of vectors each wheel of value correction
Only distribution regulated value is allocated when proportioning is allocated.If when automobile turning, according to current X-axis offset vector decomposition value
The tire power-division ratios of inverse proportion two wheels of correction trailing wheel.
Embodiment 4:
Substantially the same manner as Example 1, difference is: in step 5, if accelerator open degree is in set point, obtains current
Throttle trample speed, if throttle tramples speed more than setting value, use the mode of comparison formula to obtain responsive corrections value,
If throttle is trampled speed and is less than or equal to setting value, use the mode of comparison accelerator open degree synopsis to obtain responsive corrections value.
Embodiment 5:
Substantially the same manner as Example 1, difference is: recorded vehicle sets the accelerator open degree data of quantity, and calculation of throttle is opened
Degree meansigma methods, chooses all data less than calculation of throttle aperture meansigma methods 80% in the accelerator open degree data of record and calculates flat
Average as fine motion value range, is chosen all higher than calculation of throttle aperture meansigma methods 80% in the accelerator open degree data of record
Data calculating meansigma methods is as limit range value, when accelerator open degree value is less than or equal to fine motion value range or when accelerator open degree value is more than
The mode using accelerator open degree synopsis equal to limit range value obtains responsive corrections value, when accelerator open degree value is more than fine motion model
Enclose value and when accelerator open degree value uses the mode of comparison formula to obtain responsive corrections value less than limit range value.
Embodiment described above is the one preferably scheme of the present invention, not makees the present invention any pro forma
Limit, on the premise of without departing from the technical scheme described in claim, also have other variant and remodeling.
Claims (10)
1. an automobile electric gasoline throttle control method, it is adaptable to electric automobile or mixed electrical automobile, it is characterised in that:
Comprise the following steps:
Step one: set up accelerator open degree synopsis and/or accelerator open degree comparison formula for automobile gross weight, read standard configuration
Illuminated, acquisition automobile are demarcated gravimetric value by parameter and the accelerator open degree automobile electric output power preset, and are set with and trample limit speed
Degree, if when trampling throttle, throttle speed of action more than trampling limit velocity, then stops to each tire output, and to
Automobile ECU sends control signal；
Step 2: obtain current real-time bus gross weight；
Step 3: if current real-time bus gross weight demarcates gravimetric value less than or equal to described automobile, perform step 4, otherwise perform
Step 5；
Step 4: automobile calculates standard electric output according to real-time accelerator open degree, each tire of automobile is according to power-division ratios
Export with standard electric output, then repeated execution of steps two；
Step 5: the numeric ratio that automobile demarcates gravimetric value and current real-time bus gross weight according to automobile obtains responsive corrections value,
Automobile calculates standard electric output according to real-time accelerator open degree, and each tire of automobile exports with standard electric according to power-division ratios
Power, is then multiplied by responsive corrections value and exports as final automobile electric output power, then re-execute step 2.
Automobile electric gasoline throttle control method the most according to claim 1, it is characterised in that: it is equipped below gas pedal
One L-shaped air hose, is equipped with piston rod in L-shaped air hose, the upper end of described air hose towards gas pedal, described piston rod
Upper end and described gas pedal lower surface fixing is connected, the lower end of described L-shaped air hose offers two passages, and two are logical
The aperture sum of pore, less than the diameter of the upper end of air hose, one of them described passage is equipped with Safety Redundancy electromagnetism
Valve, described Safety Redundancy electromagnetic valve is connected with automobile ECU, and in described step one, the limit velocity of trampling of setting there are tune
Whole scope, it is relevant to the proportional example of aperture of described Safety Redundancy electromagnetic valve to trample limit velocity size in adjusting range, peace
Full redundancy electromagnetic valve according to set trample limit velocity be transformed to correspondence aperture.
Automobile electric gasoline throttle control method the most according to claim 1, it is characterised in that:
In described step 2, after automobile starting, just carry out the detection of condition of the vehicle, detection at interval of a scheduled time T
Data include vehicle speed measurement VtDrive with total electricity of the output drawn by the electric drive power superposition of each driving motor to motor
Kinetic power Pt, the pitching angle Theta of headstock tailstock longitudinal direction line and horizontal planetWith the electric output work for predetermined value to mechanical power
Conversion efficiency C；Automobile calculates draw current vehicle weight according to total electric drive power and change speed；
If the angle of pitch of car is zero, the real-time car quality between t and t+1 moment is M(t+t+1)/2Carry out according to following formula
Calculate:
M(t+t+1)/2= 2×P(t+t+1)/2×T×C/(Vt+1 2-Vt 2)；
If the angle of pitch of car is not zero, the real-time car quality between t and t+1 moment is M(t+t+1)/2Enter according to following formula
Row calculates:
M(t+t+1)/2= 2×P(t+t+1)/2×T× C/(Vt+1 2-Vt 2)×(1-Sin(Theta(t+t+1)/2))；
In described step one, gravimetric value demarcated by automobile, has the most been imported among control system when car dispatches from the factory, standard car weight
Pushed by wireless cloud and be modified；
In described step one, automobile is demarcated standard body weight values+curb weight value+default fuel tank that gravimetric value is driver and is carried
Fuel weight value.
Automobile electric gasoline throttle control method the most according to claim 1, it is characterised in that:
The rubbing surface of shooting automobile tire, carries out gray processing process and except distortion processes, successively according to the rubbing surface of automobile tire
The decorative pattern depth determine the coefficient of friction meansigma methods of current automobile tire, the coefficient of friction meansigma methods of automobile tire is carried out point
Section, the coefficient of friction meansigma methods of every section of automobile tire is all to there being a coefficient of friction correction value, in step 5, if automobile is
Cornering operation and coefficient of friction meansigma methods less than the threshold value set, are then multiplied by friction system after automobile is according to standard electric output
It is multiplied by responsive corrections value again after number correction value to export as final automobile electric output power, then repeated execution of steps two.
Automobile electric gasoline throttle control method the most according to claim 4, it is characterised in that:
Setting up frictional force synopsis, in frictional force synopsis, the model of each automobile tire and Query Value are all to there being a friction
Force value, the first rubbing surface shooting automobile tire, after carrying out gray processing process and processing except distortion, record current automobile tire and rub
On wiping face, the color distortion value of several points is as difference reference value, after automobile starting, the rubbing surface of shooting automobile tire, enters
After row gray processing processes and processes except distortion, record on current automobile tire rubbing surface color distortion values of several points as difference
Different fiducial value, inquires about frictional force synopsis according to the reduced value of comparison in difference value with difference reference value as Query Value, it is thus achieved that when
The friction force value of the rubbing surface of front automobile tire.
Automobile electric gasoline throttle control method the most according to claim 1, it is characterised in that:
Described accelerator open degree synopsis includes several current weight setting values, and each current weight setting value is all to there being one
Responsive corrections value, the quantity of described current weight setting value sets manually, and current weight value is calculated by membership function and obtains
Obtain degree of membership in current weight setting value, be multiplied by the side of responsive corrections value corresponding to each weight setpoint value by degree of membership
Formula superposition obtains final responsive corrections value.
Automobile electric gasoline throttle control method the most according to claim 1, it is characterised in that: in performing described step 5,
Acceleration transducer acquisition current acceleration changing value in automobile is as accelerating value of feedback, and that presets in standard configuration parameter adds
Acceleration value of feedback, as accelerating standard value, is contrasted by velocity variations standard value with accelerating standard value, if it is big to accelerate value of feedback
Responsive corrections value is then reduced when next time calculates responsive corrections value in accelerating standard value；If accelerating value of feedback less than accelerating standard value
Responsive corrections value is then reduced when next time calculates responsive corrections value.
Automobile electric gasoline throttle control method the most according to claim 7, it is characterised in that: corresponding in described acceleration standard value
Having a standard response time, if accelerating value of feedback equal to accelerating standard value, and the feedback response time accelerating value of feedback is less than
Standard response time then uses dynamic response correction value when next time calculates responsive corrections value, the most first reduces the response calculated
Correction value returns to the responsive corrections value calculated after a given time.
Automobile electric gasoline throttle control method the most according to claim 5, it is characterised in that: the merit of each tire of described automobile
Rate distribution ratio is standard configuration parameter, and the weight meter carried by wheel calculates current real-time bus gross weight and center of gravity position
Put, extract the offset vector of real time barycentre position and the position of centre of gravity preset, if offset vector keeps in the given time, then obtain
Take current offset vector as value of calculation, decompose current offset vector for X-axis automotive ordinate axis for Y-axis with automobile transverse axis, according to working as
The tire power-division ratios of the front offset vector each wheel of decomposition value correction.
Automobile electric gasoline throttle control method the most according to claim 9, it is characterised in that: the tire power of all wheels
In distribution ratio, 98% is distribution definite value, and in the tire power-division ratios of all wheels, 2% is distribution regulated value, divides in default setting
Join regulated value to be allocated, according to the wheel of the current offset resolution of vectors each wheel of value correction according to the allocation proportion of distribution definite value
Only distribution regulated value is allocated when tire power-division ratios is allocated；X-axis and Y-axis are fixing axle, calculate at current offset
Vector is component X-axis accounting in X-axis in X-axis, calculates and accounts in current offset vector component Y-axis in Y-axis in Y-axis
Ratio,
Vehicle right and left both sides are equal to towards the regulated value sum of distribution in real time of wheel before and after position of centre of gravity side:
X-axis accounting × 2 × distribution regulated value；
In vehicle right and left both sides, in real time distribution regulated value sum towards position of centre of gravity side front and back wheel is not equal to:
Distribution regulated value-(X-axis accounting × 2 × distribution regulated value)；
Before and after automobile, in both sides, in real time distribution regulated value sum towards the left and right wheels of position of centre of gravity side is equal to:
Y-axis accounting × 2 × distribution regulated value；
Before and after automobile, in both sides, in real time distribution regulated value sum towards position of centre of gravity side left and right wheels is not equal to:
Distribution regulated value-(Y-axis accounting × 2 × distribution regulated value)；
The realtime power distribution ratio of each wheel of automobile equal in real time distribution regulated value and distribution definite value and.
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| CN109910634A (en) * | 2019-03-29 | 2019-06-21 | 深圳猛犸电动科技有限公司 | A kind of control method, device and the terminal device of electric vehicle throttle |
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