CN101916519B - Driving simulation test method for test bench of power system of electric automobile - Google Patents

Driving simulation test method for test bench of power system of electric automobile Download PDF

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CN101916519B
CN101916519B CN201010244114.2A CN201010244114A CN101916519B CN 101916519 B CN101916519 B CN 101916519B CN 201010244114 A CN201010244114 A CN 201010244114A CN 101916519 B CN101916519 B CN 101916519B
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vehicle
power
speed
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CN101916519A (en
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张文军
刘凌
姚建平
汪伟
吴锋锋
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Changsha CRRC Zhiyu New Energy Technology Co., Ltd
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HUNAN CSR TIMES ELECTRIC CO Ltd
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Abstract

The invention relates to a driving simulation test method in the field of a power system of an electric automobile. In the method, a speed curve part, a power calculating and matching part, a data processing part, a dynamometer, a vehicle road impedance realization part, an accelerator output part, a brake output part, a shift operation part and the power system are combined, and the corresponding functional modules are integrated; by setting target speed-time parameters, technical parameters of different vehicles and the like and calculating and matching the power of the whole vehicle, different commands such as rotating speed, torque, accelerator, brake, clutch, shift and the like at different speeds are obtained, and components on a test bench of the power system of the electric automobile perform corresponding actions so as to complete driving simulation tests under different predetermined road conditions and different vehicle models; and analysis can be performed according to the acquired and recorded related data after the tests are finished so as to obtain the related performance analysis report of the power system and complete the driver driving simulation test on the test bench of the power system of the electric automobile.

Description

A kind of driving simulation test method for test bench of power system of electric automobile
Technical field
The present invention relates to the simulation experiment method of a kind of power system under different road conditions, that a kind of test bench of power system of electric automobile that utilizes is simulated energy distribution and the test-drive method under different road conditions specifically, the object of this kind of drive simulation experimental technique is to simplify driving simulation test flow process, reduce test-bed cost of layout, and attempt the driving simulation test means of a kind of power system of electric automobile field under different road conditions.
Background technology
Total institute is known, electric automobile need carry out for different road conditions the research of drive manner, also all need to carry out necessary driving efficiency training simultaneously, existing driving simulation test method is mainly based on existing driver driving simulation test device, existing driver driving simulation test device is mainly by wheel inertia device, projector, level crossing, screen, host computer and data processor, gear shift operation mechanism, throttle and brake pedal, the compositions such as driver behavior mechanism, complex structure, the data volume that causes existing driving simulation test method to gather is too huge, so that its driving simulation test method is too complicated, and cost is higher, especially existing driving simulation test method all considers how to operate driving for general fuel oil locomotive, for the electric automobile with electric running power or mixed power electric car, adopts existing driving simulation test method to seem very inadaptable.
Simultaneously, electric automobile under different road conditions in order to reach the objects such as fuel-economizing, need to carry out modeling effort to energy control and the allocation scheme of different road conditions, existing drive simulation experimental technique there is no for electric automobile the drive simulation experimental technique under different road conditions.
Along with the development of ev industry, for the driving simulation test method of test bench of power system of electric automobile still in research and development with improve the stage, without corresponding matured product.By patent consulting, not yet find it is directly the bibliographical information of the relevant driving simulation test method of electric automobile, be below the Patents data of online enquiries
1) patent No.: 200720305145, name is called the Chinese patent of " real-car driving simulating device ", this patent discloses a kind of real-car driving simulating device, comprises vehicle, projector, level crossing, screen, host computer and data processor, and screen is placed between projector and level crossing; On vehicular clutch, gas pedal, skidding mechanism and steering wheel, be separately installed with signal pickup assembly; Gear detector switch is installed on transmission for vehicles catanator, securing band detector switch is installed on securing band socket; Data processor receives the signal of signal pickup assembly, detector switch and on real vehicle, gathers switching signal with wired mode; Data processor output terminal connects by data line host computer; Main frame is connected with projector.The utility model is additional analogue means on the vehicle that can normally move, directly from vehicle, take the required signal of drive simulation, can guarantee that the normal operation of vehicle can realize the function of drive simulating again, the sensation that makes student have real vehicle to drive, and make student grasp very soon operation skill.
2) number of patent application is: 200810117172, and denomination of invention is " the developing driving simulation method based on rapid control prototyping "; This patent relates to a kind of developing driving simulation method based on rapid control prototyping, belongs to simulative automobile driving technical field.First the real-time kernel that utilizes supervisory control comuter to generate is set up the software platform of rapid control prototyping device, and compiling and download driving simulation model.Secondly, rapid control prototyping device receives after the control signal of driving simulator, calculates speed and the direction of all simulating vehicles, sends what comes into a driver's computing machine and supervisory control comuter simultaneously, is respectively used to generate scenery picture and to monitoring driving simulation process.Finally, drive simulation person or developer, according to the performance requirement of drive simulation person place vehicle and electric-control system, modify to driving simulation model, repeat driving simulator process, until the person that meets drive simulation or developer's requirement.Advantage of the present invention is, simplified developing driving simulator, reduced cost of development, and has been applicable to the V-type development mode of vehicle electrically controlling system.
In sum, present driving simulation method is all considered around fuel-engined vehicle, and structure is quite complicated, also the drive simulation method that does not extremely adapt to electric automobile or motor vehicle driven by mixed power, especially the operation of power and the difference of control are also very large, therefore by the drive simulation method of the alternative electric automobile of existing driving simulation method, exist power incompatible, structure is too responsible for waiting not enough, needs further to be improved.
Summary of the invention
Object of the present invention, be exactly without special-purpose driving simulation test method for existing power system of electric automobile test, and other driving simulation test method complicated operation, be not suitable for the deficiency of electric automobile drive simulation, a kind of applicable electric automobile drive simulation method is proposed, and can simplify driving simulation test flow process, reduce the power system of electric automobile test drive simulation experiment method in the power system of electric automobile field of test-bed cost of layout.
The technical solution adopted for the present invention to solve the technical problems is: the driving simulation test method in a kind of power system of electric automobile field, by speed of a motor vehicle curve, Cable Power Computation and coupling, data processing, dynamometer machine, vehicle roadlock is realized, throttle output, braking output, gear position operation and power system etc. partly combine, will corresponding above-mentioned each functional module part organic assembling, by target vehicle speed---time parameter, the setting of different vehicle technical parameter etc., obtains the rotating speed under the different speed of a motor vehicle by car load Cable Power Computation and coupling, torque, throttle, braking, clutch, the different commands such as gear, allow each parts of test bench of power system of electric automobile carry out corresponding actions, thereby complete predetermined different road conditions, drive simulation experiment under different vehicle model, after off-test, can analyze according to the related data recording, thereby obtain the correlated performance analysis report of power system, mainly complete the driver driving simulation test of power system of electric automobile on test-bed.
Wherein:
" speed of a motor vehicle curve " in described driving simulation test method is according to test needs, and the target vehicle speed of establishment---time curve, by the vehicle actual operating state under the different road conditions of simulation.This speed of a motor vehicle curve can be more according to different road conditions, the actual operating state collection of different vehicle model or calculate.
Described " Cable Power Computation and coupling " module can complete calculating by industrial computer or corresponding controllers, can according to " speed of a motor vehicle curve " calculate and export target rotating speed under the corresponding command value, as accelerator open degree, braking size, rotational speed and torque order etc.
Described " data processing " module is mainly realized by digital-to-analogue passage and operating mode machine, mainly completes various data acquisitions, digital-to-analog conversion and data communication facility.
Described " dynamometer machine " can consist of electric dynamometer, and the rotational speed and torque order receiving according to it realizes the function of bearing road resistance in simulating vehicle operational process.
Described " throttle output ", " braking output ", " gear position operation " can be realized corresponding function by corresponding gas pedal, brake pedal, gear shift operation assembly, its objective is by accepting the corresponding command and make each parts of power system complete corresponding actions according to speed of a motor vehicle curve.
Described " power system ", as measurand, is mainly comprised of parts such as engine, clutch coupling, wheel box, motor and electric machine controllers, can increase and decrease according to the demand of different tests content, mainly bears the function of simulation car load.
The key point of this driving simulation test method is as follows:
1. test-bed forms and can be comprised of vehicle physical unit, do not need additionally to purchase corresponding component, after off-test, can reuse, also can under different tests condition, change each ingredient of corresponding test bench of power system simultaneously, complete the Performance Assessment test of parts;
2. this test method takes into full account existing power system of electric automobile relevant feature, and integrate motor and electric machine controller module in car load Cable Power Computation and coupling can be reproduced better the running status of actual vehicle on stand;
3. this test method is flexible to operation, only needs the target setting speed of a motor vehicle---time curve, and system rack can complete the related needs of driver driving simulation;
4. the different road conditions in traditional driver driving simulated experiment are reduced to target vehicle speed---time curve, greatly saved the cost of test unit.
The present invention, by the research to this drive simulation experimental technique, can greatly simplify driving simulation test stand and form, and only needs, by corresponding above-mentioned each functional module organic assembling, can complete relevant test, simple to operation; This drive simulation experimental technique only needs the target setting speed of a motor vehicle---time curve, and all the other flow processs all can be completed automatically by industrial computer and control system, and work efficiency is high, has saved human resources; Each functional module for drive simulation experimental stand can reuse after off-test, and utilization factor is high, cost-saving.
Accompanying drawing explanation
Fig. 1 is driving simulation test method principle of the present invention, process flow diagram.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 1, the driving simulation test method in a kind of power system of electric automobile field, by speed of a motor vehicle curve, Cable Power Computation and coupling, data processing, dynamometer machine, vehicle roadlock is realized, throttle output, braking output, gear position operation and power system etc. partly combine, by corresponding above-mentioned each functional module part organic assembling, by to target vehicle speed---time parameter, the setting of different vehicle technical parameter etc., by car load Cable Power Computation and coupling, obtain the rotating speed under the different speed of a motor vehicle, torque, throttle, braking, clutch, the different commands such as gear, allow each parts of test bench of power system of electric automobile carry out corresponding actions, thereby complete predetermined different road conditions, drive simulation experiment under different vehicle model, after off-test, can analyze according to the related data recording, thereby obtain the correlated performance analysis report of power system, mainly complete the driver driving simulation test of power system of electric automobile on test-bed.
Wherein:
Described speed of a motor vehicle curved portion is according to test needs, and the target vehicle speed of establishment---time curve, by the vehicle actual operating state under the different road conditions of simulation.This speed of a motor vehicle curve can be more according to different road conditions, the actual operating state collection of different vehicle model or calculate.
Described Cable Power Computation and compatible portion can complete calculating by industrial computer or corresponding controllers, can be according to the corresponding command value under speed of a motor vehicle curve calculation export target rotating speed, as: accelerator open degree, braking size, rotational speed and torque order etc.
Described data processing section is mainly realized by digital-to-analogue passage and operating mode machine, mainly completes various data acquisitions, digital-to-analog conversion and data communication facility.;
Described dynamometer machine part can consist of electric dynamometer, and the rotational speed and torque order receiving according to it realizes the function of bearing road resistance in simulating vehicle operational process.
Described throttle output, braking output, gear position operation part can realize corresponding function by corresponding gas pedal, brake pedal, gear shift operation assembly, its objective is by accepting the corresponding command and make each parts of power system complete corresponding actions according to speed of a motor vehicle curve.
Described power system part, as measurand, is mainly comprised of parts such as engine, clutch coupling, wheel box, motor and electric machine controllers, can increase and decrease according to the demand of different tests content, mainly bears the function of simulation car load.
The key point of this driving simulation test method is as follows:
1. test-bed forms and can be comprised of vehicle physical unit, do not need additionally to purchase corresponding component, after off-test, can reuse, also can under different tests condition, change each ingredient of corresponding test bench of power system simultaneously, complete the Performance Assessment test of parts;
2. this test method takes into full account existing power system of electric automobile relevant feature, and integrate motor and electric machine controller module in car load Cable Power Computation and coupling can be reproduced better the running status of actual vehicle on stand;
3. this test method is flexible to operation, only needs the target setting speed of a motor vehicle---time curve, and system rack can complete the related needs of driver driving simulation;
4. the different road conditions in traditional driver driving simulated experiment are reduced to target vehicle speed---time curve, greatly saved the cost of test unit.
Two road public bus network actual road tests are example in Zhuzhou to take simulation parallel hybrid electric vehicle, and concrete experiment process and method are as follows:
1. gathering or calculate test uses parallel hybrid electric vehicle in actual Zhuzhou two road public bus network service datas, as various test desired data parameters such as the speed of a motor vehicle, gear, engine speed, the order of electric machine controller input speed, output torque commands under collection vehicle different time, set up this simulated roadway operating mode target vehicle speed---time curve, regulation process of the test, target vehicle speed-time curve example sees the following form:
Time (S) Target vehicle speed (km/h)
??1 ??0
??2 ??10
??3 ??15
??…… ??……
??999 ??10
??1000 ??0
2. according to tested vehicle car load state of the art, build test-bed, test-bed can be simplified and be built by system units such as engine system, motor and motor controller system, throttle systems according to experiment content, to save experimentation cost, meets test demand;
3. will simulated car load technical parameter, motor controller parameter and target vehicle speed---each related experiment parameter such as time curve is inputted in dynamometer system and Cable Power Computation and matching system to simulate actual vehicle road operating condition according to road condition in process of the test;
4. dynamometer system and Cable Power Computation matching system can be according to car load state of the art, simulated roadway ambient conditions and target vehicle speed---and time curve completes in experimentation that actual roadlock calculates and simulation automatically, allows test-bed can simulate the true driving situation of actual vehicle under different road conditions;
5. according to experiment content, on stand, complete road load simulated experiment, complete content of the test, by gathering the data of simulating vehicle in real road operational process, analyze power output in this experimentation and control strategy, whether energy distribution meets real road demand.

Claims (1)

1. the driving simulation test method for test bench of power system of electric automobile, it is characterized in that: by speed of a motor vehicle curve, Cable Power Computation and coupling, data processing, dynamometer machine, vehicle roadlock is realized, throttle output, braking output, gear position operation and power system combine, by corresponding each part mentioned above organic assembling, by to target vehicle speed---time parameter, the setting of different vehicle technical parameter, by car load Cable Power Computation and coupling, obtain the rotating speed under the different speed of a motor vehicle, torque, throttle, braking, clutch, gear different command, allow each parts of test bench of power system of electric automobile carry out corresponding actions, thereby complete predetermined different road conditions, drive simulation experiment under different vehicle model, after off-test, can analyze according to the related data recording, thereby obtain the correlated performance analysis report of power system, mainly complete the driver driving simulation test of power system of electric automobile on test-bed, wherein:
Described speed of a motor vehicle curved portion is according to test needs, and the target vehicle speed of establishment---time curve, by the vehicle actual operating state under the different road conditions of simulation; This speed of a motor vehicle curve is according to different road conditions, the actual operating state collection of different vehicle model or calculate;
Described Cable Power Computation and compatible portion complete calculating by industrial computer or corresponding controllers, according to the corresponding command value under speed of a motor vehicle curve calculation export target rotating speed;
Described data processing section is mainly realized by digital-to-analogue passage and operating mode machine, completes various data acquisitions, digital-to-analog conversion and data communication facility;
Described dynamometer machine part consists of electric dynamometer, and the rotational speed and torque order receiving according to it realizes the function of bearing road resistance in simulating vehicle operational process;
Described throttle output, braking output, gear position operation part realize corresponding function by corresponding gas pedal, brake pedal, gear shift operation assembly, its objective is by accepting the corresponding command and make each parts of power system complete corresponding actions according to speed of a motor vehicle curve;
Described power system part, as measurand, is mainly comprised of engine, clutch coupling, wheel box, motor and electric machine controller, according to the demand of different tests content, increases and decreases, and bears the function of simulation car load;
Concrete experiment process and method are as follows:
1) gather or calculate test and use parallel hybrid electric vehicle in actual track service data, set up simulated roadway operating mode target vehicle speed---time curve, regulation process of the test;
2) according to tested vehicle car load state of the art, build test-bed, test-bed is simplified and is built by engine system, motor and motor controller system, throttle system according to experiment content, to save experimentation cost, meets test demand;
3) will simulated car load technical parameter, motor controller parameter and target vehicle speed---each related experiment parameter of time curve is inputted in dynamometer system and Cable Power Computation and matching system to simulate actual vehicle road operating condition according to road condition in process of the test;
4) dynamometer system and Cable Power Computation matching system can be according to car load state of the art, simulated roadway ambient conditions and target vehicle speed---and time curve completes in experimentation that actual roadlock calculates and simulation automatically, allows test-bed can simulate the true driving situation of actual vehicle under different road conditions;
5) according to experiment content, on stand, complete road load simulated experiment, complete content of the test, by gathering the data of simulating vehicle in real road operational process, analyze power output in this experimentation and control strategy, whether energy distribution meets real road demand.
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