CN109291804A - A kind of electric car simulation manual gear fuel vehicle engine speed acquisition methods - Google Patents
A kind of electric car simulation manual gear fuel vehicle engine speed acquisition methods Download PDFInfo
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- CN109291804A CN109291804A CN201810968499.3A CN201810968499A CN109291804A CN 109291804 A CN109291804 A CN 109291804A CN 201810968499 A CN201810968499 A CN 201810968499A CN 109291804 A CN109291804 A CN 109291804A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/12—Speed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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- Mechanical Engineering (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The present invention proposes a kind of electric car simulation manual gear fuel vehicle engine speed acquisition methods, belongs to electric car field.It include: that simulated clutch, gear simulator and torque controller are installed on electric car；Torque controller carries out analog-to-digital conversion to the analog electrical signal of acquisition, obtains clutch pedal position signal and bar gear, in conjunction with the speed of acquisition, accelerator pedal signal, brake pedal signal, carries out engine speed simulation, output engine simulates revolving speed.Engine speed under identical operating condition is in the variation relation of accelerator pedal position, to obtain the corresponding simulation of engine revolving speed of current accelerator pedal position to target manual gear fuel vehicle by interpolation method measurement.The present invention on electric car by installing simulated clutch and gear simulator, using interpolation method and reverse method, realizes and more accurately simulates to various to mark manual gear fuel vehicle operating condition, promote driving school student experience.
Description
Technical field
The invention belongs to pure electric automobile fields, and in particular to a kind of electric car simulation manual gear fuel oil car engine turn
Fast acquisition methods.
Background technique
With the extensive use of electric car, many driving schools also begin to use electric car as training and Driving Test vehicle with
Alleviate the dependency degree to conventional fuel oil car, reduces the consumption to fossil fuel and the pollution to environment.It is admitted to meet student
The demand of C1 driving license, driving school carries out student training and needs using manual gear vehicle, and current single-stage speed reducing electric vehicle can not expire
The use demand of sufficient driving school, thus the same Work condition analogue carried out on the basis of manual gear fuel vehicle to this kind of electric vehicle is needed to change
It makes.However it is limited to the related system of all various aspects such as the revolving speed of manual gear fuel oil car engine and driver's operation, mechanical structure, it is many
Operating condition is difficult to carry out accurate simulation by electric car, such as because of situations such as engine misses caused by misoperation.In order to
It allows driving school student still to possess the identical experience for driving manual gear fuel vehicle when driving improved electric vehicle, needs to hold each work
Engine speed under condition, as reaching the different data references for driving effects, and in display as devices such as instrument boards
Hold, so that electric car is accordingly transformed.
Summary of the invention
The present invention is directed to problem above and proposes a kind of electric car simulation manual gear fuel vehicle engine speed acquisition side
Method simulates fuel vehicle clutch work by installing the simulated clutch and gear simulator of simulation fuel vehicle on electric car
Make state, simulation manual gear transmission duty state, simulated implementation engine speed meets driving school student and drives improved electricity
Motor-car possesses the identical experience of manual gear fuel vehicle.
Electric car provided by the invention simulates manual gear fuel vehicle engine speed acquisition methods, comprising:
(1) simulated clutch and gear simulator, torque controller are installed on electric car.Simulated clutch is by clutch
Device pedal and range sensor composition, clutch pedal are mounted on the left of brake pedal, and range sensor is mounted on clutch and steps on
The rear of plate；The range sensor of simulated clutch exports the analog electrical signal of measurement to torque according to the position of clutch pedal
Controller.
Gear simulator is made of manual gear shift bar and position sensor, is achieved in that: by the automatic catch of vehicle
Shift bar replaces with manual gear shift bar, in one position sensor of arranged beneath of each gear positions of bar.Gear
6 position sensors of bit emulator export analog electrical signal to torque controller.
(2) torque controller carries out analog-to-digital conversion to the analog electrical signal of acquisition, obtain clutch pedal position signal and
Bar gear carries out engine speed simulation in conjunction with the speed of acquisition, accelerator pedal signal, brake pedal signal, and output is started
Machine simulates revolving speed；Including following situation:
(201) when vehicular clutch is in discrete state or neutral gear, vehicle is in idling mode, engine speed only with
Accelerator pedal signal is related.If accelerator pedal signal is 0, the simulation of engine revolving speed of electric vehicle is set as 800rpm；If
When accelerator pedal signal is greater than 0, engine accelerates idle running after receiving accelerator pedal signal, and measurement electric car is manual to target
Engine speed passes through interpolation calculation with the variation relation of accelerator pedal position when gear fuel vehicle is in neutral gear or clutch separation
Engine speed is obtained with the change curve of accelerator pedal position, it is corresponding to obtain current accelerator pedal position further according to the curve
Simulation of engine revolving speed.
(202) when vehicular clutch is in semi-linkage or fully engaged condition, if speed is equal to 0 and gear is non-empty
Gear, clutch be in sliding wear state at this time, need to be measured when being in identical operating condition to target manual gear fuel vehicle using interpolation method not
With engine speed under clutch conjugation with the change curve of accelerator pedal position.Torque controller is according to current electric car
Clutch pedal position obtain corresponding clutch degree conjugation, and then according to engine speed under respective clutch conjugation with
The curve of accelerator pedal position variation obtains simulation of engine revolving speed.
(203) when vehicular clutch is in semi-linkage or bonding state and vehicle gear is in non-neutral gear and speed is greater than 0
When, the anti-simulation revolving speed N for pushing away engine, calculation formula are as follows:
Wherein, V indicates the speed of electric car, tkIndicate transmission ratio of the simulation position retaining device at gear k, tmainExpression pair
The base ratio of target manual gear fuel vehicle, R indicate the rolling radius of electric car wheel, and α indicates the torque transmitting of clutch
Coefficient.When semi-linkage, clutch is in sliding wear state, clutch moment of torque carry-over factor α < 1；When being completely combined, clutch moment of torque
Carry-over factor α=1.
Compared with prior art, the present invention having following clear superiority:
(1) present invention can be used as the data reference for simulating other driving cycles by the simulated engine revolving speed obtained,
Various manual gear fuel vehicle operating conditions are more accurately simulated in realization.
(2) present invention by the simulated engine revolving speed obtained may be implemented the devices pair such as electric vehicle instrument disk with it is manual
The real-time display of revolving speed should be had with its engine under operating condition by keeping off fuel vehicle.
Detailed description of the invention
Fig. 1 is the system structure diagram of electric car simulation manual gear fuel vehicle engine speed of the present invention；
Fig. 2 is electric vehicle engine revolving speed modeling process chart of the present invention；
Fig. 3 is that clutch-pedal travel position and clutch range sensor go out the signal of output signal relationship in the present invention
Figure.
Specific embodiment
The present invention is understood and implemented for the ease of those of ordinary skill in the art, and the present invention is made into one with reference to the accompanying drawing
The detailed description of step.The present invention for manual gear fuel vehicle each operating condition of engine speed different operation, using interpolation method,
Speed reverse method etc. obtains engine speed, further obtains under different speeds and shifting state, clutch pedal knot
Right, accelerator pedal position respectively with the corresponding relationship of engine speed, thus realize in the improved structure basis of electric vehicle
On simulation to manual gear fuel vehicle engine speed, provide data reference for other driving cycles and realize the devices such as instrument board
Simulation revolving speed real-time display on part.
As shown in Figure 1, a kind of electric car provided by the invention simulates manual gear fuel vehicle engine speed acquisition methods
Hardware structural diagram.Simulated clutch and gear simulator, torque controller are installed on electric car.Simulated clutch
It is made of clutch pedal and range sensor；Gear simulator is made of manual gear shift bar and position sensor.Distance
Sensor, that is, position sensor.
The embodiment of the present invention is on the left of the brake pedal of electric vehicle, i.e., traditional manual gear fuel vehicle installs clutch pedal
Position, a clutch pedal and range sensor are installed, range sensor is mounted on the rear of clutch pedal；According to away from
Different location signal from the clutch pedal that sensor detects, torque controller simulate clutch separation, in conjunction with or
Semi-linkage state realizes the clutch function of manual-gear vehicle.The range sensor of simulated clutch is according to clutch pedal
Position exports the analog electrical signal of measurement to torque controller.
Gear simulator of the invention is achieved in that: changing the automatic catch shift bar on electric car into a band
There are six the manual gear shift bars of gear (5 forward gears and 1 reverse gear) function, and in each gear positions of shift bar
One position sensor of arranged beneath, position locating for the voltage signal judgement shift bar by 6 position sensors of measurement
It sets, realizes the gear identification function of manual-gear vehicle.6 position sensors of gear simulator export analog electrical signal to torque
Controller.
Torque controller carries out analog-to-digital conversion to the analog electrical signal of the simulated clutch of acquisition, obtains clutch pedal position
Confidence number carries out analog-to-digital conversion to the analog electrical signal for obtaining gear simulator, bar gear is obtained, in conjunction with what is obtained from vehicle
Speed, accelerator pedal signal, brake pedal signal etc., calculating simulation revolving speed export corresponding control signal to electric machine controller.
The clutch pedal position signal is expressed as one 0~100 digital signal, and different numerical value represent pedal not
Same position, value, which represents driver when being 0, does not have stepping on clutch pedal.The acceleration pedal position signal is expressed as one 0
~100 digital signal, different numerical value represent pedal different location, and value, which represents driver when being 0, does not have stepping on accelerator pedal.
The present invention first simulates the clutch working condition of electric car, manual gear transmission duty state carries out
Simulation.The simulation of clutch working condition refers under declared working condition using clutch pedal position sensor, by its electric signal with
The clutch pedal position during manual gear fuel vehicle is driven to be matched, simulate clutch separation, in conjunction with and half join
The states such as dynamic, and complete the simulation to clutch pedal power transmission ability under different location；Manual gear transmission duty
State simulation refers to the automatic catch shift bar of electric vehicle replacing with the shift bar of the gear function with there are six, and makes
Working effect and manual gear fuel vehicle six to keep off bar consistent.
Engine speed simulation refers to electric car in the manual gear fuel vehicle of the corresponding operating condition of various difference operating condition Imitatings
Engine speed.The method of the present invention calculates the simulation revolving speed of engine in such a way that interpolation method, speed reverse method combine, and mentions
A kind of method of electric car simulation manual gear fuel vehicle engine speed out.As shown in Fig. 2, being electric vehicle engine of the present invention
Revolving speed modeling process chart, firstly, torque controller obtains simulated clutch, the position sensor detection of gear simulator input
Electric signal, accelerator pedal position, speed signal etc. detect the operating condition of electric car, carry out engine speed simulation.Institute of the present invention
The engine speed following four operating condition that the electric car used is mainly directed to manual gear fuel vehicle is simulated respectively, such as table
Shown in 1.
Four kinds of operating conditions of 1 electric car of table
| Serial number | Clutch | Gear | Accelerator pedal signal | Speed |
| 1 | Separation | -- | >=0 | -- |
| 2 | Semi-linkage/combination | Neutral gear | >=0 | -- |
| 3 | Semi-linkage/combination | Non- neutral gear | >=0 | 0 |
| 4 | Semi-linkage/combination | Non- neutral gear | >=0 | >0 |
The engine speed simulation under four kinds of operating conditions is illustrated separately below.
(1) when manual gear fuel vehicle clutch separation, vehicle is in idling mode, and engine speed only accelerates with throttle
Pedal signal is related.If accelerator pedal signal is 0, the simulation of engine revolving speed of electric vehicle can be directly set as 800rpm；
Accelerator pedal signal represents driver for 0 and does not step on the gas.When accelerator pedal signal is greater than 0, engine should accelerate receiving
Accelerate idle running after pedal signal.Such situation is by carrying out engine speed under present case with the variation of accelerator pedal position
Interpolation calibration.Interpolation method refer to by measure electric car neutral gear or clutch separation are in target manual gear fuel vehicle when hair
Motivation revolving speed goes out engine speed with the variation of accelerator pedal position by interpolation calculation with the variation relation of accelerator pedal position
Curve, to obtain the simulation revolving speed of the race of engine under different accelerator pedal positions.
Specific demarcation flow is as follows:
101) with certain stroke Separation control accelerator pedal by zero stroke position to new position and holding, add until reaching
Speed pedal range generates the acceleration signals corresponded under different accelerator pedal positions, and obtains different acceleration signalss and issue
The stabilized (steady-state) speed of motivation；
102) with certain stroke Separation control accelerator pedal by maximum travel position to new position and holding, until reaching
Accelerator pedal returns to zero stroke position, generates the acceleration signals corresponded under different accelerator pedal positions, and obtain different acceleration
The stabilized (steady-state) speed of engine under signal；
103) stop acquiring after collecting setting quantity acceleration signals and engine stabilizer rotary speed data；
104) golden function of a single variable interpolation method carries out interpolation to collected data in use gram, the engine after being fitted
Revolving speed with accelerator pedal position variation relation formula.Wherein, Kriging regression method is as follows:
A) semivariance of distance revolving speed corresponding with two calculating accelerator pedal position point two-by-two to collected data；
B) fitting obtains the relational expression of distance and corresponding revolving speed semivariance between accelerator pedal position point, to pass through any distance
Calculate corresponding semivariance；
C) semivariance between all known speeds is calculated；
D) semivariance of the unknown revolving speed point of calculating to all known speed points；
E) Solving Linear optimal coefficient is established；
F) summation is weighted to known attribute using optimal coefficient, obtains unknown accelerator pedal position and corresponds to estimating for revolving speed
Evaluation.
(2) when vehicular clutch is in semi-linkage or fully engaged condition, if gear be neutral gear, though speed whether be
0, engine power has all only been transmitted on transmission input shaft by clutch, transmission gear not with a shaft gear knot
It closes, therefore power and is not transferred to wheel.Since an axis and its gear rotary inertia are limited, therefore engine speed variation still may be used
It is considered as only related with accelerator pedal signal.Therefore such operating condition is still needed to through the variation to engine speed with accelerator pedal position
Interpolation calibration is carried out, to obtain the simulation speed curves of the race of engine under different accelerator pedal positions.Calibration mode with
Engine speed is identical with accelerator pedal signal scaling method under clutch separation state.According to the engine speed of acquisition with adding
The change curve of speed pedal position obtains the corresponding simulation of engine revolving speed N of current accelerator pedal position.
(3) when vehicular clutch is in semi-linkage or fully engaged condition, if speed is equal to 0 and gear is non-neutral gear,
Then illustrate that engine power has been transmitted to speed changer by clutch and has respectively kept off on gear, be transmitted to wheel finally by torque,
And it is still stationary state that the power due to providing at this time, which is less than the vehicle drag event vehicle that needs overcome,.Clutch, which is in, at this time slides
Mill state needs to establish under vehicle stationary state by calibration at this time, is in using interpolation method measurement to target manual gear fuel vehicle
Engine speed is primarily based on clutch pedal with the change curve of accelerator pedal under difference clutch conjugation when identical operating condition
Then position acquisition clutch conjugation obtains under the clutch conjugation engine speed with the variation relation of accelerator pedal.
Torque controller obtains corresponding clutch degree conjugation according to the clutch pedal position of current electric car, and then according to corresponding
Engine speed obtains simulation of engine revolving speed N with the change curve of accelerator pedal under clutch conjugation.
(4) speed reverse method is utilized, the simulation revolving speed of engine is calculated.Speed reverse method refers to currently to be turned round in conjunction with clutch
Square carry-over factor releases present engine simulation using vehicle speed information and to the transmission ratio of target manual gear fuel vehicle drive mechanism
Revolving speed.
When vehicular clutch is in semi-linkage or bonding state and vehicle gear is in non-neutral gear and speed and is greater than 0, hair
Motivation gives vehicle drive system power output by clutch.When semi-linkage, clutch is still in sliding wear state, clutch
Torque transmission coefficient α < 1；When being completely combined, clutch moment of torque carry-over factor α=1.Due to there is speed at this time greater than 0, therefore can
To push away fuel vehicle engine speed, the anti-simulation revolving speed N for pushing away engine, calculation formula according to power transmission line is counter are as follows:
Wherein, V indicates the speed of electric car, tkIndicate transmission ratio of the simulation position retaining device at gear k, tmainExpression pair
The base ratio of target manual gear fuel vehicle, R indicate the rolling radius of electric car wheel, and α indicates the torque transmitting of clutch
Coefficient.
The torque transmission coefficient α of clutch is defined as: clutch is in input torque under certain state and output torque
Ratio.By the clutch to mark traditional manual shelves fuel-engined vehicle, in several different locations, (main sample point is gaging clutch
Semi-linkage section) under torque transmission coefficient, and when calculating clutch by the method for non-linear interpolation and being in different location
Carry-over factor, clutch moment of torque carry-over factor can be drawn out with the change curve of clutch pedal position.
The present invention obtains the clutch pedal position of manual gear fuel vehicle by a clutch pedal range sensor
Information, and converted to obtain clutch conjugation.As shown in figure 3, for clutch-pedal travel position and clutch in the present invention
Device range sensor output signal relation schematic diagram, clutch range sensor is according to the location of clutch pedal, output
One D2~D9Electric signal.When clutch pedal is in initial position C10When, the signal value of range sensor output is D9, this
When clutch be fully engaged condition；When clutch pedal is stepped on bottom most position C completely1When, range sensor output
Signal value is D2, clutch is to completely disengage state at this time.When clutch pedal is in position CxWhen, range sensor output
Signal value is Dx, x=2,3 ... 9, clutch is semi-linkage state at this time.For the working condition for simulating actual clutch completely,
Practical conventional clutch has a certain amount of free travel and idle stroke, such as C in Fig. 310To C9Indicate free travel, i.e. clutch
After pedal steps on certain depth, clutch is still within the state of being completely combined；C2To C1Indicate idle stroke, i.e. clutch pedal is stepped on
To C2Clutch is initially separated when position, in C2To C1Section clutch holding completely disengage state.C2To C9Indicate clutch
Semi-linkage state, i.e., clutch is in partially engaged condition at this time.If currently obtaining clutch pedal position is Cx, then phase is obtained
The conjugation grade K for the clutch answered are as follows:
Work as CxBelong to C9~C10, clutch is in fully engaged condition, and clutch conjugation grade K is 1 at this time；
Work as CxBelong to C2~C9, clutch is in semi-linkage state, at this time according to the signal of clutch range sensor sending
Value DxWith conjugation grade of its ratio for issuing signal value range as current state clutch under semi-linkage state
Work as CxBelong to C1~C2, clutch is in state is completely disengaged, and clutch conjugation grade K is 0 at this time.
Therefore clutch conjugation information can be obtained based on above-mentioned relation formula, it is sensed on this basis by engine speed
Device obtains the engine speed information under corresponding conjugation, further can establish engine speed by calibration and combine with clutch
The variation relation of degree.
Obviously, described embodiment is also only a part of the embodiments of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Claims (3)
1. a kind of electric car simulates manual gear fuel vehicle engine speed acquisition methods characterized by comprising
(1) simulated clutch, gear simulator and torque controller are installed on electric car；Simulated clutch is stepped on by clutch
Plate and range sensor composition, clutch pedal are mounted on the left of brake pedal, and range sensor is mounted on clutch pedal
Rear；The range sensor of simulated clutch exports the analog electrical signal of measurement to moment of torsion control according to the position of clutch pedal
Device；
Gear simulator is made of manual gear shift bar and position sensor, is achieved in that: the automatic catch of vehicle is shifted gears
Bar replaces with manual gear shift bar, in one position sensor of arranged beneath of each gear positions of bar；Gear mould
6 position sensors of quasi- device export analog electrical signal to torque controller；
(2) torque controller carries out analog-to-digital conversion to the analog electrical signal of acquisition, obtains clutch pedal position signal and bar
Gear carries out engine speed simulation, output engine mould in conjunction with the speed of acquisition, accelerator pedal signal, brake pedal signal
Quasi- revolving speed；Including following situation:
(201) when vehicular clutch is in discrete state or neutral gear, vehicle is in idling mode, engine speed and acceleration
Pedal signal is related；If accelerator pedal signal is 0, simulation of engine revolving speed is set as 800rpm；If accelerator pedal signal
When greater than 0, engine accelerates idle running after receiving accelerator pedal signal, and measurement electric car is in target manual gear fuel vehicle
Engine speed obtains engine by interpolation calculation and turns with the variation relation of accelerator pedal position when neutral gear or clutch separation
Speed obtains the corresponding simulation of engine of current accelerator pedal position further according to the curve and turns with the change curve of accelerator pedal position
Speed；
(202) when vehicular clutch is in semi-linkage or fully engaged condition, if speed is equal to 0 and gear is non-neutral gear, this
When clutch be in sliding wear state, need to by calibration establish under vehicle stationary state, using interpolation method measure to target manual gear
The curve that engine speed changes with accelerator pedal position under difference clutch conjugation when fuel vehicle is in identical operating condition；Torque
Controller obtains corresponding clutch degree conjugation according to the clutch pedal position of current electric car, and then according to corresponding clutch
Engine speed obtains simulation of engine revolving speed with the curve that accelerator pedal position changes under device conjugation；
(203) when vehicular clutch is in semi-linkage or bonding state and vehicle gear is in non-neutral gear and speed is greater than 0, instead
Push away the simulation revolving speed N of engine, calculation formula are as follows:
Wherein, V indicates the speed of electric car, tkIndicate transmission ratio of the simulation position retaining device at gear k, tmainIt indicates to target
The base ratio of manual gear fuel vehicle, R indicate the rolling radius of electric car wheel, and α indicates the torque transmission coefficient of clutch；
When clutch is in semi-linkage, α < 1, clutch is in when being completely combined, α=1.
2. electric car according to claim 1 simulates manual gear fuel vehicle engine speed method, which is characterized in that institute
In (2) stated, change curve of the engine speed with accelerator pedal position, the interpolation mark are obtained using interpolation scaling method
The method of determining includes:
Step 1, with certain stroke Separation control accelerator pedal by zero stroke position to new position and holding, until reaching acceleration
Maximum pedal travel generates the acceleration signals corresponded under different accelerator pedal positions, and obtains and start under different acceleration signalss
The stabilized (steady-state) speed of machine；
Step 2, with certain stroke Separation control accelerator pedal by maximum travel position to new position and holding, until reach plus
Speed pedal returns to zero stroke position, generates the acceleration signals corresponded under different accelerator pedal positions, and obtains different acceleration letters
The stabilized (steady-state) speed of number lower engine；
Step 3 stops acquiring after collecting setting quantity acceleration signals and engine stabilizer rotary speed data；
Step 4, using gram in golden function of a single variable interpolation method interpolation is carried out to collected data, the engine after be fitted turn
Speed with accelerator pedal position variation relation formula.
3. electric car according to claim 1 simulates manual gear fuel vehicle engine speed method, which is characterized in that institute
In (202) stated, clutch pedal position signal, the range sensor root are obtained by clutch pedal range sensor
According to the location of clutch pedal, a D is exported2~D9Electric signal；
When clutch pedal is in initial position C10When, the signal value of range sensor output is D9, clutch is complete at this time
Engagement state；When clutch pedal is stepped on bottom most position C completely1When, the signal value of range sensor output is D2, at this time
Clutch is to completely disengage state；When clutch pedal is in position CxWhen, the signal value of range sensor output is Dx, x=2,
3 ... 9, clutch is semi-linkage state at this time；Wherein,
It is C when obtaining clutch pedal positionxWhen, corresponding conversion obtains clutch conjugation K, as follows:
Work as CxBelong to C9~C10When, clutch conjugation grade K is 1 at this time；
Work as CxBelong to C2~C9When, the conjugation grade of clutch at this time
Work as CxBelong to C1~C2When, clutch conjugation grade K is 0 at this time.
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| CN111677783A (en) * | 2020-05-08 | 2020-09-18 | 中国北方车辆研究所 | Calibration method for initial position parameter threshold of clutch sliding friction point |
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| CN112879466A (en) * | 2021-01-08 | 2021-06-01 | 大连职业技术学院 | Semi-linkage automatic control mechanism of manual transmission automobile clutch, stroke calculation method and execution steps |
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| CN114056121A (en) * | 2020-08-07 | 2022-02-18 | 丰田自动车株式会社 | Electric automobile |
| CN114673784A (en) * | 2021-02-23 | 2022-06-28 | 北京新能源汽车股份有限公司 | Clutch state control method and device |
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