CN103994894A - Electromobile test platform based on AMT and implementation method thereof - Google Patents
Electromobile test platform based on AMT and implementation method thereof Download PDFInfo
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- CN103994894A CN103994894A CN201410236262.8A CN201410236262A CN103994894A CN 103994894 A CN103994894 A CN 103994894A CN 201410236262 A CN201410236262 A CN 201410236262A CN 103994894 A CN103994894 A CN 103994894A
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Abstract
The invention relates to an electromobile test platform based on an AMT and an implementation method of the electromobile test platform based on the AMT. The electromobile test platform based on the AMT is characterized by comprising a simulation system connected with a CAN bus, a power system, a loading system, a brake system and an information collection system. The simulation system runs a simulation program according to input running parameters and transmits the generated road condition signal and the electromobile running state signal to the power system, the loading system and the brake system through the CAN bus, the power system provides power for a electromobile, the loading system and the brake system simulate the running condition of the electromobile, the information collection system collects the running state information of the electromobile and transmits the collected information to the simulation system, and whether the simulation system stops the simulation program or not is judged by the simulation system. The test platform can real reflect the performance of the electromobile provided with the AMT under the actual working conditions, and the defect that software simulation is the main means in traditional research methods is overcome. The electromobile test platform based on the AMT and the implementation method of the electromobile test platform based on the AMT can be widely applied to the research and development process of the electromobile.
Description
Technical field
The present invention relates to a kind of experiment porch and function realizing method thereof, particularly about a kind of platform for electric vehicle experiments and function realizing method thereof based on AMT (Automated Mechanical Transmission, machine automatization formula variator).
Background technology
Along with the development of scientific and technological progress, society, oil and environment become the focus that current people pay close attention to.Electric automobile with its oil zero consume, the feature of driving process zero-emission can reasonable alleviation problem of environmental pollution, electric automobile is subject to people's attention just gradually.The method of tradition research electric automobile be take software simulation emulation as main, and desirable simulated conditions and limited degree of confidence are set, and the condition that this research method is set and actual conditions may have bigger difference; If adopt the method for repacking traditional vehicle to study, need to drop into a large amount of man power and materials, and the R&D cycle be very long.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of and the platform for electric vehicle experiments based on AMT and function realizing method thereof that actual condition is more approaching and degree of confidence is high.
For achieving the above object, the present invention takes following technical scheme: a kind of platform for electric vehicle experiments based on AMT, is characterized in that: it comprises analogue system, power system, loading system, brake system, information acquisition system and CAN bus, described analogue system, power system, loading system, between brake system and information acquisition system, all by described CAN bus, connect, described analogue system is according to the duty parameter operation simulated program of input, and the road conditions signal that emulation is produced and travel condition of vehicle signal are by described CAN bus transfer described power system extremely, loading system and brake system, described power system provides power according to the road conditions signal receiving and travel condition of vehicle signal for vehicle, the operating mode of described loading system and the operation of brake system simulating vehicle, the running state information of described information acquisition system collection vehicle by described CAN bus transfer described analogue system extremely, by described analogue system, judge whether to stop simulated program.
Described analogue system comprises host computer and industrial computer, the travel condition of vehicle communication that described information acquisition system gathers is to described industrial computer, described industrial computer will receive travel condition of vehicle information and emulation duty parameter is processed after integration, operation simulated program is also exported road conditions signal and travel condition of vehicle signal, and road conditions signal and the travel condition of vehicle signal of output transfer to described power system, loading system and brake system respectively; Described power system comprises power battery management system, electrokinetic cell, drive motor, drive motor controller, AMT casing, semiaxis, flying wheel, AMT controller and AMT shift-selecting and changing actuating mechanism; Described power battery management system is for judging that whether the SOC of described electrokinetic cell is too low, and described electrokinetic cell is described drive motor power supply, and described drive motor controller is controlled described drive motor and provided power to described power system; Described drive motor by described AMT casing and semiaxis by transmission of power to described flying wheel, the inertia of described flying wheel simulation car load; Described AMT controller sends shifting instruction according to travel condition of vehicle and controls described AMT shift-selecting and changing actuating mechanism and change to best gear; Described loading system comprises charger controller and charger, according to the road conditions signal receiving and travel condition of vehicle signal, described charger controller is controlled described charger and is exerted pressure on described flying wheel, the running resistance in simulated automotive driving process; Described brake system comprises brake monitor and detent, and described brake monitor receives the action electric signal of described power system output by described CAN bus, and according to the action electric signal receiving, controls described detent and brake; Described information acquisition system comprises 100Nm torque sensor, 1000Nm torque sensor, AMT OSS, accelerator pedal and brake pedal; Described 100Nm torque sensor, 1000Nm torque sensor and AMT OSS gather respectively output speed and torque, the output shaft rotating speed of AMT casing and the output shaft rotating speed of torque and AMT casing of described drive motor, and collection result is all transferred to described AMT controller, described AMT controller contrasts the output shaft rotating speed of the described AMT casing receiving and the output speed of described drive motor; Described accelerator pedal and brake pedal convert driver's action to respectively action electric signal and transfer to described AMT controller.
Between described industrial computer, power battery management system, drive motor controller, AMT controller, charger controller and brake monitor, all by described CAN bus, connect.
A function realizing method for the described pure electric automobile experiment porch based on AMT, it comprises the following steps: 1) by the human-computer interaction interface input traffic information of host computer; 2) driver, by controlling accelerator pedal and brake pedal, simulates actual driving cycles; 3) host computer transfers to industrial computer by the traffic information of input, industrial computer operation simulated program, and to drive motor controller, AMT controller, charger controller and brake monitor, send road conditions signal and travel condition of vehicle signal respectively by CAN bus; 4) whether the SOC value that power battery management system judges electrokinetic cell lower than default secure threshold, if the SOC value of electrokinetic cell 22 lower than secure threshold, experiment porch is out of service; Otherwise experiment porch continues operation; 5) the road conditions signal that basis receives and travel condition of vehicle signal and the control strategy of formulating separately, AMT controller and brake monitor be independent AMT shift-selecting and changing actuating mechanism and the detent controlled respectively; According to the road conditions signal receiving and travel condition of vehicle signal, charger controller is controlled charger; According to driving or braking requirement, drive motor controller is controlled drive motor action; 6) the 100Nm torque sensor in information acquisition system, 1000Nm torque sensor and AMT output shaft sensor carry out respectively signals collecting, and the signal collecting is all transferred to AMT controller, AMT controller transfers to industrial computer by CAN bus by signal; 7) by host computer, monitor driver's experiment porch whether out of service, if monitor driver's experiment porch out of service, experiment porch is out of service, otherwise returns to step 2).
Described step 5), in, two parameter Shiftings comprise: first, and input speed of a motor vehicle u, the aperture α of accelerator pedal and the SOC value of battery, and whether the SOC value that judges battery is higher than critical value SOC
0if, higher than the SOC value of battery higher than critical value SOC
0, the rate of change d α/dt of accelerator pedal aperture is judged; Otherwise, according to the aperture α of speed of a motor vehicle u and accelerator pedal, carry out economy gearshift; Secondly, according to the threshold value of default accelerator pedal aperture rate of change, the rate of change d α/dt of judgement accelerator pedal aperture, if accelerator pedal aperture rate of change d α/dt is greater than the threshold value of accelerator pedal aperture rate of change,, according to the aperture α of speed of a motor vehicle u and accelerator pedal, carry out dynamic property gearshift; Otherwise, according to the aperture α of speed of a motor vehicle u and accelerator pedal, carry out economy gearshift; Finally, according to the default speed of a motor vehicle, electronic throttle aperture, electronic throttle aperture rate of change, brake pedal aperture and the gradient five parameter Shiftings, to whether shifting gears, judge, if gearshift, the shifting commands sending according to AMT controller is shifted gears, otherwise, finish gearshift.
Described step 5), in, regenerative braking strategy comprises: first, and the SOC value of the aperture β of input brake pedal and battery, and whether the SOC value that judges battery is higher than critical value SOC
1if the SOC value of battery is higher than critical value SOC
1, do not carry out regenerative braking, by brake monitor, control detent and carry out mechanical braking; Otherwise, further judge the braking mode of electric automobile; Secondly, according to the aperture β of brake pedal, the braking mode of judgement electric automobile; If carry out sliding brake function, by drive motor controller, to control drive motor and brake, drive motor changes into braking mode and carries out braking energy recovery, and the braking energy of recovery stores in electrokinetic cell through drive motor controller; If carry out mild or moderate braking, in vehicle deceleration process, by drive motor, brake and recover energy, during parking, by detent, brake; If carry out brake hard, by brake monitor, control detent and carry out mechanical braking.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, experiment porch of the present invention comprises the analogue system connecting by CAN bus, power system, loading system, brake system and information acquisition system, analogue system is according to the duty parameter operation simulated program of input, and road conditions signal and travel condition of vehicle signal that emulation is produced transfer to power system, loading system and brake system, power system provides power for vehicle, the operating mode of loading system and the operation of brake system simulating vehicle, the running state information of information acquisition system collection vehicle also transfers to analogue system, by analogue system, judge whether to stop simulated program, therefore operating condition of the present invention and actual condition are more approaching, and the degree of confidence of test result is higher.2, the present invention is due to host computer and industrial computer being set in analogue system, by host computer, carry out man-machine interaction, by industrial computer, coordinate to control power system, loading system, brake system and information acquisition system, adopt experiment porch of the present invention to carry out detailed test and study to the reliability of the strategies such as gearshift and regenerative braking and AMT system.3, adopt electric automobile that experiment porch of the present invention can obtain the being equipped with AMT in real time performance under actual condition, thereby the Recent Progresses In The Development of soft and hardware in quickening electric automobile, save R&D costs, so the using value of the present invention in electric automobile research and development is high.Based on above advantage, the present invention can be widely used in the research and development of electric automobile.
Accompanying drawing explanation
Fig. 1 is the structural representation of the platform for electric vehicle experiments based on AMT of the present invention
Fig. 2 is the function realizing method process flow diagram of the platform for electric vehicle experiments based on AMT of the present invention
Fig. 3 is gearshift control strategy process flow diagram
Fig. 4 is feedback control strategy process flow diagram
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, the platform for electric vehicle experiments that the present invention is based on AMT comprises analogue system 1, power system 2, loading system 3, brake system 4, information acquisition system 5 and CAN bus 6.Between analogue system 1, power system 2, loading system 3, brake system 4 and information acquisition system 5, all by CAN bus 6, connect.Analogue system 1 is according to the duty parameter operation simulated program of input, and road conditions signal and travel condition of vehicle signal that emulation is produced transfer to power system 2, loading system 3 and brake system 4 by CAN bus 6, power system 2 provides power according to the road conditions signal receiving and travel condition of vehicle signal for vehicle, the operating mode of loading system 3 and brake system 4 simulating vehicle operations, the running state information of information acquisition system 5 collection vehicle also transfers to analogue system 1 by CAN bus 6, by analogue system 1, judges whether to stop simulated program.
In above-described embodiment, as shown in Figure 1, analogue system 1 comprises host computer 11 and industrial computer 12.By host computer 11, emulation duty parameter is set and transfers to industrial computer 12, the travel condition of vehicle communication that information acquisition system 5 gathers is to industrial computer 12, industrial computer 12 will receive travel condition of vehicle information and emulation duty parameter is processed after integration, operation simulated program is also exported road conditions signal and travel condition of vehicle signal, and the road conditions signal of output and travel condition of vehicle signal transfer to power system 2, loading system 3 and brake system 4 respectively.
Power system 2 comprises power battery management system 21, electrokinetic cell 22, drive motor 23, drive motor controller 24, AMT casing 25, semiaxis 26, flying wheel 27, AMT controller 28 and AMT shift-selecting and changing actuating mechanism 29.Power battery management system 21 is for judging SOC (the State of Charge of electrokinetic cell 22, battery charge state) whether too low, electrokinetic cell 22 is drive motor 23 power supplies, and drive motor controller 24 is controlled drive motor 23 and provided power to power system 2; Drive motor 23 by AMT casing 25 and semiaxis 26 by transmission of power to flying wheel 27, the inertia of flying wheel 27 simulation car loads; AMT controller 28 sends shifting instruction control AMT shift-selecting and changing actuating mechanism 29 according to travel condition of vehicle and changes to best gear, thereby makes vehicle keep good dynamic property and economy.
Loading system 3 comprises charger controller 31 and charger 32.According to the road conditions signal of being exported by industrial computer 12 and the travel condition of vehicle signal that receive, thereby applying certain pressure on flying wheel 27, charger controller 31 controlled loading devices 32 produce friction force, with the running resistance in simulated automotive driving process.
Brake system 4 comprises brake monitor 41 and detent 42.Brake monitor 41 receives the action electric signal of power system 2 outputs by CAN bus 6, and according to the action electric signal receiving, controls detent 42 and brake.
Information acquisition system 5 comprises 100Nm torque sensor 51,1000Nm torque sensor 52, AMT OSS 53, accelerator pedal 54 and brake pedal 55.100Nm torque sensor 51,1000Nm torque sensor 52 and AMT OSS 53 gather respectively output speed and torque, the output shaft rotating speed of AMT casing 25 and the output shaft rotating speed of torque and AMT casing 25 of drive motor 23, and collection result is all transferred to AMT controller 28, AMT controller 28 contrasts the output speed of the output shaft rotating speed of the AMT casing 25 receiving and drive motor 23, for testing the accuracy of AMT OSS 53.Accelerator pedal 54 and brake pedal 55 convert driver's action electric signal to and transfer to AMT controller 28 respectively.
In above-described embodiment, as shown in Figure 1, industrial computer 12 in analogue system 1, power battery management system 21 in power system 2, drive motor controller 24 and AMT controller 28, between charger controller 31 in loading system 3 and the brake monitor 41 in brake system 4, all by CAN bus 6, connect, for communication.
Setting vehicle operational mode is: electric automobile on straight, calm, good bituminous highway successively through starting, accelerate, at the uniform velocity, braking deceleration and five processes of parking.The course of work that the present invention is based on the pure electric automobile experiment porch of AMT is:
After experiment porch of the present invention starts, by the human-computer interaction interface input traffic information of host computer 11, host computer 11 transfers to industrial computer 12 by the traffic information of input.Industrial computer 12 is according to receiving traffic information, and simulated program brings into operation.
Driver's drive simulating, bend the throttle 54, makes electric automobile starting.Power battery management system 21 judges that whether the SOC value of electrokinetic cell 22 is too low; If SOC is too low, experiment porch of the present invention is out of service; Otherwise, continuing operation, electric automobile is in the starting stage.
Electrokinetic cell 22 gives drive motor 23 power supplies, and drive motor 23 drives flying wheel 27 to rotate by AMT casing 25 and semiaxis 26 under the control of drive motor controller 24; Meanwhile, according to traffic information and electric automobile running status, charger controller 31 calculates the power need loading, and controlled loading device 32 certain friction force on flying wheel 27.In starting-up process, the speed of a motor vehicle rises gradually, and electric automobile is in boost phase.
According to the aperture of accelerator pedal 54 and the speed of a motor vehicle, AMT controller 28 is exported the instruction that upgrades, and controls AMT shift-selecting and changing actuating mechanism 29 and carry out upshift action, makes AMT casing 25 remain on a suitable gear; When actual vehicle speed reaches speed of a motor vehicle predetermined value, keep the aperture of accelerator pedal 54 constant, make the electric motor car motion that remains a constant speed.
Release the gas pedal 54, gently step on brake pedal 55, now according to the aperture of brake pedal 55, to judge braking mode be mild or moderate braking to brake monitor 41, brake monitor 41 first sends brake signal to drive motor controller 24, and drive motor controller 24 is controlled drive motor 23 and carried out regenerative braking.When the speed of a motor vehicle is during lower than certain value, brake monitor 41 sends brake signal to detent 43, and detent 9 is braked according to the brake signal receiving, and electric automobile is stopped.In moderating process, the 28 output downshift instructions of AMT controller, and control AMT shift-selecting and changing actuating mechanism 29 and carry out downshift action, make AMT casing 25 remain on a suitable gear.
After electric automobile stops, closing experiment porch of the present invention.
In the above whole course of work, the needed signal of each sensor Real-time Collection is also transferred to corresponding controller, between each controller and industrial computer 12, by CAN bus 6, constantly keep communication, industrial computer 12 gathers all information receiving, after processing integration, each controller is sent to corresponding steering order, pass to host computer 11, the human-computer interaction interface of host computer 11 shows vehicle operating information in real time simultaneously.
As shown in Figure 2, a kind of function realizing method of the pure electric automobile experiment porch based on AMT, it comprises the following steps:
1) by the human-computer interaction interface input traffic information of host computer 11.
2) driver, by controlling accelerator pedal 54 and brake pedal 55, simulates actual driving cycles.
3) host computer 11 transfers to industrial computer 12 by the traffic information of input, industrial computer 12 operation simulated programs, and to drive motor controller 24, AMT controller 28, charger controller 31 and brake monitor 41, send road conditions signal and travel condition of vehicle signal respectively by CAN bus 6.
4) whether the SOC value that power battery management system 21 judges electrokinetic cell 22 lower than default secure threshold, if the SOC value of electrokinetic cell 22 lower than secure threshold, experiment porch of the present invention is out of service; Otherwise experiment porch of the present invention continues operation.
5) according to the road conditions signal receiving and the control strategy of travel condition of vehicle signal and AMT controller 28, AMT controller 28 is controlled AMT shift-selecting and changing actuating mechanism 29, its control procedure is: whether 28 pairs of AMT controllers are shifted gears and judged, if do not shifted gears, performs step 6); If gearshift, AMT controller 28 control AMT shift-selecting and changing actuating mechanisms 29 carry out AMT gearshift.
According to the control strategy of the road conditions signal receiving and travel condition of vehicle signal and brake monitor 41, brake monitor 41 is controlled detent 43 actions, its control procedure is: whether 41 pairs of brake monitors are braked and judged, if do not braked, performs step 6); If braking, brake monitor 41 is controlled detent 43 actions.
According to the road conditions signal receiving and travel condition of vehicle signal, 31 pairs of chargers 32 of charger controller are controlled, its control procedure is: whether 31 pairs of charger controllers change to load judges, if do not change loading, performs step 6); If changed, load, thereby charger controller 31 controlled loading devices 32 apply certain pressure generation friction force, with the running resistance in simulated automotive driving process.
According to driving or braking requirement, drive motor controller 24 is controlled drive motor 23 actions, and its control procedure is: drive motor controller 24 judgements are enough change output, if do not change output, perform step 6); If change output, the tuning knob that drive motor controller 24 is controlled drive motor 23 carries out speed governing.
6) the 100Nm torque sensor 51 in information acquisition system 5,1000Nm torque sensor 52 and AMT output shaft sensor 53 carry out respectively signals collecting, and the signal collecting is all transferred to AMT controller 28, AMT controller 28 transfers to industrial computer 12 by CAN bus 6 by signal.
7) by host computer 11 monitoring driver experiment porch whether out of service, if monitor driver's experiment porch out of service, experiment porch is out of service, otherwise returns to step 2).
Above-mentioned steps 5), in, control strategy comprises two parameter Shiftings and regenerative braking strategy.
As shown in Figure 3, two parameter Shiftings comprise:
First, input speed of a motor vehicle u, the aperture α of accelerator pedal and the SOC value of battery, and whether the SOC value that judges battery is higher than critical value SOC
0if, higher than the SOC value of battery higher than critical value SOC
0, the rate of change d α/dt of accelerator pedal aperture is judged; Otherwise, according to the aperture α of speed of a motor vehicle u and accelerator pedal, carry out economy gearshift.
Secondly, according to the threshold value of default accelerator pedal aperture rate of change, the rate of change d α/dt of judgement accelerator pedal aperture, if accelerator pedal aperture rate of change d α/dt is greater than the threshold value of accelerator pedal aperture rate of change,, according to the aperture α of speed of a motor vehicle u and accelerator pedal, carry out dynamic property gearshift; Otherwise, according to the aperture α of speed of a motor vehicle u and accelerator pedal, carry out economy gearshift.
Finally, according to the default speed of a motor vehicle, electronic throttle aperture, electronic throttle aperture rate of change, brake pedal aperture and the gradient five parameter Shiftings, to whether shifting gears, judge, if gearshift, the shifting commands sending according to AMT controller 28 is shifted gears, otherwise, finish gearshift.
As shown in Figure 4, regenerative braking strategy comprises:
First, the SOC value of the aperture β of input brake pedal 55 and battery, and whether the SOC value that judges battery is higher than critical value SOC
1if the SOC value of battery is higher than critical value SOC
1, do not carry out regenerative braking, by brake monitor 41, control detent 43 and carry out mechanical braking; Otherwise, further judge the braking mode of electric automobile.
Secondly, according to the aperture β of brake pedal 55, the braking mode of judgement electric automobile; If carry out sliding brake function, by drive motor controller 24, to control drive motor 23 and brake, drive motor 23 changes into braking mode and carries out braking energy recovery, and the braking energy of recovery stores in electrokinetic cell 22 through drive motor controller 24; If carry out mild or moderate braking, in vehicle deceleration process, by drive motor 23, brake and recover energy, during parking, by detent 43, brake; If carry out brake hard, for guaranteeing safety, by brake monitor 41, control detent 43 and carry out mechanical braking.
The various embodiments described above are only for illustrating the present invention; wherein the structure of each parts, connected mode and method step etc. all can change to some extent; every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (6)
1. the platform for electric vehicle experiments based on AMT, is characterized in that: it comprises analogue system, power system, loading system, brake system, information acquisition system and CAN bus, described analogue system, power system, loading system, between brake system and information acquisition system, all by described CAN bus, connect, described analogue system is according to the duty parameter operation simulated program of input, and the road conditions signal that emulation is produced and travel condition of vehicle signal are by described CAN bus transfer described power system extremely, loading system and brake system, described power system provides power according to the road conditions signal receiving and travel condition of vehicle signal for vehicle, the operating mode of described loading system and the operation of brake system simulating vehicle, the running state information of described information acquisition system collection vehicle by described CAN bus transfer described analogue system extremely, by described analogue system, judge whether to stop simulated program.
2. a kind of platform for electric vehicle experiments based on AMT as claimed in claim 1, it is characterized in that: described analogue system comprises host computer and industrial computer, the travel condition of vehicle communication that described information acquisition system gathers is to described industrial computer, described industrial computer will receive travel condition of vehicle information and emulation duty parameter is processed after integration, operation simulated program is also exported road conditions signal and travel condition of vehicle signal, and road conditions signal and the travel condition of vehicle signal of output transfer to described power system, loading system and brake system respectively;
Described power system comprises power battery management system, electrokinetic cell, drive motor, drive motor controller, AMT casing, semiaxis, flying wheel, AMT controller and AMT shift-selecting and changing actuating mechanism; Described power battery management system is for judging that whether the SOC of described electrokinetic cell is too low, and described electrokinetic cell is described drive motor power supply, and described drive motor controller is controlled described drive motor and provided power to described power system; Described drive motor by described AMT casing and semiaxis by transmission of power to described flying wheel, the inertia of described flying wheel simulation car load; Described AMT controller sends shifting instruction according to travel condition of vehicle and controls described AMT shift-selecting and changing actuating mechanism and change to best gear;
Described loading system comprises charger controller and charger, according to the road conditions signal receiving and travel condition of vehicle signal, described charger controller is controlled described charger and is exerted pressure on described flying wheel, the running resistance in simulated automotive driving process;
Described brake system comprises brake monitor and detent, and described brake monitor receives the action electric signal of described power system output by described CAN bus, and according to the action electric signal receiving, controls described detent and brake;
Described information acquisition system comprises 100Nm torque sensor, 1000Nm torque sensor, AMT OSS, accelerator pedal and brake pedal; Described 100Nm torque sensor, 1000Nm torque sensor and AMT OSS gather respectively output speed and torque, the output shaft rotating speed of AMT casing and the output shaft rotating speed of torque and AMT casing of described drive motor, and collection result is all transferred to described AMT controller, described AMT controller contrasts the output shaft rotating speed of the described AMT casing receiving and the output speed of described drive motor; Described accelerator pedal and brake pedal convert driver's action to respectively action electric signal and transfer to described AMT controller.
3. a kind of platform for electric vehicle experiments based on AMT as claimed in claim 2, is characterized in that: between described industrial computer, power battery management system, drive motor controller, AMT controller, charger controller and brake monitor, all by described CAN bus, connect.
4. a function realizing method for the pure electric automobile experiment porch based on AMT as described in claim 1～3 any one, it comprises the following steps:
1) by the human-computer interaction interface input traffic information of host computer;
2) driver, by controlling accelerator pedal and brake pedal, simulates actual driving cycles;
3) host computer transfers to industrial computer by the traffic information of input, industrial computer operation simulated program, and to drive motor controller, AMT controller, charger controller and brake monitor, send road conditions signal and travel condition of vehicle signal respectively by CAN bus;
4) whether the SOC value that power battery management system judges electrokinetic cell lower than default secure threshold, if the SOC value of electrokinetic cell 22 lower than secure threshold, experiment porch is out of service; Otherwise experiment porch continues operation;
5) the road conditions signal that basis receives and travel condition of vehicle signal and the control strategy of formulating separately, AMT controller and brake monitor be independent AMT shift-selecting and changing actuating mechanism and the detent controlled respectively; According to the road conditions signal receiving and travel condition of vehicle signal, charger controller is controlled charger; According to driving or braking requirement, drive motor controller is controlled drive motor action;
6) the 100Nm torque sensor in information acquisition system, 1000Nm torque sensor and AMT output shaft sensor carry out respectively signals collecting, and the signal collecting is all transferred to AMT controller, AMT controller transfers to industrial computer by CAN bus by signal;
7) by host computer, monitor driver's experiment porch whether out of service, if monitor driver's experiment porch out of service, experiment porch is out of service, otherwise returns to step 2).
5. the function realizing method of a kind of pure electric automobile experiment porch based on AMT as claimed in claim 4, is characterized in that: described step 5), two parameter Shiftings comprise:
First, input speed of a motor vehicle u, the aperture α of accelerator pedal and the SOC value of battery, and whether the SOC value that judges battery is higher than critical value SOC
0if, higher than the SOC value of battery higher than critical value SOC
0, the rate of change d α/dt of accelerator pedal aperture is judged; Otherwise, according to the aperture α of speed of a motor vehicle u and accelerator pedal, carry out economy gearshift;
Secondly, according to the threshold value of default accelerator pedal aperture rate of change, the rate of change d α/dt of judgement accelerator pedal aperture, if accelerator pedal aperture rate of change d α/dt is greater than the threshold value of accelerator pedal aperture rate of change,, according to the aperture α of speed of a motor vehicle u and accelerator pedal, carry out dynamic property gearshift; Otherwise, according to the aperture α of speed of a motor vehicle u and accelerator pedal, carry out economy gearshift;
Finally, according to the default speed of a motor vehicle, electronic throttle aperture, electronic throttle aperture rate of change, brake pedal aperture and the gradient five parameter Shiftings, to whether shifting gears, judge, if gearshift, the shifting commands sending according to AMT controller is shifted gears, otherwise, finish gearshift.
6. the function realizing method of a kind of pure electric automobile experiment porch based on AMT as described in claim 4 or 5, is characterized in that: described step 5), regenerative braking strategy comprises:
First, the SOC value of the aperture β of input brake pedal and battery, and whether the SOC value that judges battery is higher than critical value SOC
1if the SOC value of battery is higher than critical value SOC
1, do not carry out regenerative braking, by brake monitor, control detent and carry out mechanical braking; Otherwise, further judge the braking mode of electric automobile;
Secondly, according to the aperture β of brake pedal, the braking mode of judgement electric automobile; If carry out sliding brake function, by drive motor controller, to control drive motor and brake, drive motor changes into braking mode and carries out braking energy recovery, and the braking energy of recovery stores in electrokinetic cell through drive motor controller; If carry out mild or moderate braking, in vehicle deceleration process, by drive motor, brake and recover energy, during parking, by detent, brake; If carry out brake hard, by brake monitor, control detent and carry out mechanical braking.
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| CN101153829A (en) * | 2006-09-27 | 2008-04-02 | 谢新茂 | System for testing drive control of electric car |
| CN101701877A (en) * | 2009-12-02 | 2010-05-05 | 中国汽车技术研究中心 | ABS brake and motor feedback brake cooperative control strategy test stand for electric vehicle |
| CN103308325A (en) * | 2013-06-26 | 2013-09-18 | 东莞中山大学研究院 | Driving system semi-physical simulation platform of electric automobile |
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