CN106644502B - A kind of electric automobile motor drive system Road quality simulation experimental rig and method - Google Patents
A kind of electric automobile motor drive system Road quality simulation experimental rig and method Download PDFInfo
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- CN106644502B CN106644502B CN201610849286.XA CN201610849286A CN106644502B CN 106644502 B CN106644502 B CN 106644502B CN 201610849286 A CN201610849286 A CN 201610849286A CN 106644502 B CN106644502 B CN 106644502B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The present invention relates to a kind of electric automobile motor drive system Road quality simulation experimental rigs and method, described device to include：Computer, motion controller, loading bench, driving motor, electric machine controller, strain-type torque tester, power analyzer, data acquisition module, power distribution cabinet and battery pack；The computer judges that can electric machine controller export enough torques to drive automobile according to operation speed per hour instruction operation under various forms of road conditions.Electric automobile motor drive system Road quality simulation experimental rig of the present invention and method realize driveability test of the motor driven systems in the case where simulating true complex road condition, solve the problems, such as that traditional test device to test has a single function.
Description
Technical Field
The invention relates to the technical field of electric vehicle tests, in particular to a road condition simulation test device and method for a motor driving system of an electric vehicle.
Background
At present, a testing device for an electric driving system of an electric automobile generally comprises a loading platform, a driving motor, a motor controller, a strain type torque tester, a power analyzer, a data acquisition module, a power distribution cabinet and a battery pack. The loading platform provides a load for the driving motor, and the data acquisition module acquires speed, current and torque information of the motor driving system to realize performance test of the motor driving system.
The device has single function, can only complete the performance test of the motor driving system under specific load, and cannot test the system performance under different complex road conditions. The driving road conditions of the automobile are complex and changeable, higher requirements are provided for the electric automobile, the performance test of the motor driving system under different complex road conditions has important significance, and the function cannot be realized by the conventional testing device.
Therefore, a test method capable of simulating the driving performance under real and complex road conditions is urgently needed.
Disclosure of Invention
In view of the above analysis, the present invention aims to provide a road condition simulation test device and method for a motor driving system of an electric vehicle, so as to solve the problem that the existing test device cannot test the system performance under different complex road conditions.
The purpose of the invention is mainly realized by the following technical scheme:
the utility model provides an electric automobile motor drive system road conditions analogue test device which characterized in that includes: the system comprises a computer, a motion controller, a loading platform, a driving motor, a motor controller, a strain type torque tester, a power analyzer, a data acquisition module, a power distribution cabinet and a battery pack; wherein,
the computer is respectively connected with the motion controller, the motor controller and the data acquisition module through CAN buses and is used for sending control instructions to the motion controller and the motor controller, receiving data reported by the data acquisition module and processing and analyzing the data;
the motion controller is connected with the loading platform through a lead; the motion controller converts the control instruction sent by the computer into a load loading instruction and outputs the load loading instruction to the loading platform;
the loading platform, the strain type torque tester and the driving motor are sequentially connected; the loading platform is used for outputting loading torque to the driving motor according to the received load loading instruction;
the motor controller is respectively connected with the power analyzer and the driving motor through cables; the motor controller is used for controlling the output torque and the rotating speed of the driving motor by outputting control current according to the running speed-per-hour instruction of the computer;
the strain type torque tester is used for measuring the torque and the rotating speed of the output shaft of the driving motor through the torque sensor;
the data acquisition module is connected with the strain torque tester and the power analyzer through leads; the device is used for collecting data measured by the strain type torque tester and the power analyzer and reporting the data to the computer.
The computer further comprises:
the system comprises a road condition simulation module, an instruction sending module and a data analysis module; wherein,
the road condition simulation module is used for compiling and designing road conditions of different forms for the electric automobile and setting simulation torque for each road condition;
the command sending module is used for sending a road condition simulation control command to the motion controller and sending a speed-per-run command to the motor controller;
the data analysis module is used for analyzing the received torque, rotating speed and power data and judging whether the motor controller can output enough torque under different forms of road conditions so as to drive the automobile to run according to the speed-per-run instruction.
Load platform, strain type torque test appearance, driving motor connect gradually and further include:
an output shaft of the loading platform is connected with one end of the strain type torque tester through a coupler, and the other end of the strain type torque tester is connected with an output shaft of the driving motor through a coupler.
The road condition simulation control instruction comprises simulation torque information aiming at each road condition;
the run speed command includes simulated run speed information, i.e., speed and torque.
The judging whether the motor controller can output enough torque to drive the automobile to operate according to the speed-per-hour instruction under different forms of road conditions further comprises:
converting the rotating speed information into an actual running speed per hour, and comparing the actual running speed per hour with a simulated running speed per hour; if the actual running speed per hour can reach the simulated running speed per hour, the torque output by the motor controller under the road condition is considered to be enough, the automobile can be driven to run according to the simulated running speed per hour in the running speed per hour instruction under the torque, otherwise, the torque output by the motor controller under the road condition is considered to be insufficient, and the automobile cannot be driven to run according to the simulated running speed per hour in the running speed per hour instruction under the torque.
A working method of the road condition simulation test device for the motor driving system of the electric automobile is characterized by comprising the following steps of:
step S1, electrifying the road condition simulation test device of the electric automobile motor driving system;
step S2, the computer sends a road condition simulation control instruction to the motion controller and sends a speed-per-hour operation instruction to the motor controller;
step S3, the data acquisition module acquires data measured by the strain type torque tester and the power analyzer and reports the data to the computer;
step S4, the computer analyzes the received data and judges whether the motor driving system meets the driving requirements of different road conditions;
and step S5, the computer adjusts the road condition simulation control command according to the judgment result, and executes the steps again until the motor driving system meets the driving requirements of different road conditions.
The step S2 further includes:
the computer sends the road condition simulation control instruction to the motion controller, and the motion controller converts the road condition simulation instruction into a load loading instruction and outputs the load loading instruction to the loading platform; the loading platform outputs loading torque through an output shaft, and the loading torque is transmitted to the output shaft of the driving motor through the strain type torque tester;
the computer outputs a speed-per-time operation instruction to the motor controller, and the motor controller outputs a control current according to the speed-per-time operation instruction so as to control the driving motor to rotate according to the required speed and torque.
The step S3 further includes:
the power analyzer measures the current and voltage of the motor controller and sends data to the data acquisition module;
the strain torque tester measures the torque and the rotating speed of the output shaft of the driving motor and sends data to the data acquisition module.
The step S4 further includes:
converting the rotating speed information into an actual running speed per hour, and comparing the actual running speed per hour with a simulated running speed per hour;
if the actual running speed per hour can reach the simulated running speed per hour, the torque output by the motor controller under the road condition is considered to be enough, and the automobile can be driven to run according to the simulated running speed per hour in the running speed per hour instruction under the torque;
otherwise, the torque output by the motor controller under the road condition is considered to be insufficient, and the automobile cannot be driven to run according to the simulated running speed per hour in the running speed per hour instruction under the torque.
The invention has the following beneficial effects:
the road condition simulation test device and method for the motor driving system of the electric automobile realize the driving performance test of the motor driving system under the condition of simulating real and complex road conditions and solve the problem of single test function of the traditional test device.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.
Fig. 1 is a schematic structural diagram of a road condition simulation test device of a motor driving system of an electric vehicle.
Detailed Description
The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention.
The embodiment of the invention discloses a road condition simulation test device for a motor driving system of an electric vehicle, which comprises the following components in percentage by weight as shown in figure 1: the device comprises a computer 1, a motion controller 2, a loading platform 3, a driving motor 4, a motor controller 5, a strain type torque tester 6, a power analyzer 7, a data acquisition module 8, a power distribution cabinet 9 and a battery pack 10.
The communication port of the computer 1 is respectively connected with the communication ports of the motion controller 2, the motor controller 5 and the data acquisition module 8 through CAN buses; the computer is used for sending a control command to the motion controller 2 and the motor controller 5, receiving data reported by the data acquisition module 8, and processing and analyzing the data;
the output end of the motion controller 2 is connected with the input end of the loading platform 3 through a wire; the motion controller 2 converts the control instruction sent by the computer 1 into a load loading instruction and outputs the load loading instruction to the loading platform 3;
an output shaft of the loading platform 3 is connected with one end of a strain type torque tester through a coupler, and the other end of the strain type torque tester 6 is connected with an output shaft of the driving motor 4 through a coupler; the loading platform 3 outputs loading torque to the driving motor 4 through an output shaft of the loading platform 3 according to the received instruction, and the loading torque is transmitted to the output shaft of the driving motor 4 through the strain type torque tester 6; the coupler is provided with a radial clamping nut, a clamping shaft sleeve or a conical shaft sleeve.
The output end of the motor controller 5 is respectively connected with the power analyzer 7 and the input end of the driving motor 4 through cables; the motor controller 5 controls the output torque and the rotating speed of the driving motor 4 by outputting control current according to a torque and speed control instruction transmitted by the computer;
the strain type torque tester is used for measuring the torque and the rotating speed of the output shaft of the driving motor 4 through the torque sensor; the torque sensor adopts a digital torque sensor or an analog torque sensor of Simmonstan company; the power analyzer is used for calculating the power of the motor controller by measuring the current and voltage of the motor controller; the power analyzer adopts a WT3000 high-precision power analyzer.
The input end of the data acquisition module 8 is connected with the output ends of the strain type torque tester 6 and the power analyzer 7 through leads; the strain type torque tester 6 and the power analyzer 7 are used for acquiring data measured by the strain type torque tester and the power analyzer and reporting the data to a computer;
the power distribution cabinet 9 is used for supplying power to the loading platform 3; the battery pack 10 is used to provide dc power to the motor controller 5 and further to the drive motor 4.
Wherein the computer 1 further comprises: the system comprises a road condition simulation module, an instruction sending module and a data analysis module.
The road condition simulation module is used for compiling and designing road conditions of different forms for the electric automobile, and setting simulation torque for each road condition, wherein the road conditions comprise level road running, climbing, downhill, frequent start and stop and bumpy road surfaces;
the command sending module is used for sending control commands to the motion controller 2 and the motor controller 5; specifically, the instruction sending module of the computer 1 sends a road condition simulation control instruction to the motion controller 2, and sends an operation speed-per-hour instruction to the motor controller 5. The road condition simulation control instruction comprises simulation torque information aiming at each road condition; the run-speed command includes simulated run-speed information, specifically, speed and torque.
The data analysis module is used for storing and analyzing received data, wherein the data comprises torque, rotating speed and power data; the data analysis is to convert the rotating speed information reported by the data acquisition module into an actual running speed per hour and compare the actual running speed per hour with a simulated running speed per hour; if the actual running speed per hour can reach the simulated running speed per hour, the torque output by the motor controller 5 under the road condition is considered to be enough, and the automobile can be driven to run according to the simulated running speed per hour in the running speed per hour instruction sent by the computer 1 under the torque; therefore, whether the motor controller 5 can output enough torque under different forms of road conditions is judged, and the automobile is driven to run according to the simulated running speed per hour in the running speed per hour instruction sent by the instruction sending module.
According to another embodiment of the invention, a road condition simulation test method for a motor driving system of an electric vehicle is disclosed, which specifically comprises the following steps:
step S1, electrifying the road condition simulation test device of the electric automobile motor driving system;
the road condition simulation test device comprises: the device comprises a computer 1, a motion controller 2, a loading platform 3, a driving motor 4, a motor controller 5, a strain type torque tester 6, a power analyzer 7, a data acquisition module 8, a power distribution cabinet 9 and a battery pack 10.
Step S2, the computer 1 sends the road condition simulation control instruction to the motion controller 2, and the motion controller 2 converts the road condition simulation instruction into a load loading instruction and outputs the load loading instruction to the loading platform 3; after receiving the loading instruction, the loading platform 3 outputs a loading torque to the driving motor through an output shaft, and the loading torque is transmitted to the output shaft of the driving motor 4 through the strain type torque tester 6;
the road condition is different from road condition, when the vehicle runs on a flat road, the load is the resistance of the vehicle, and when the vehicle runs on a slope or a downhill, the load is the sum of the resistance of the vehicle and the component force of the gravity of the vehicle on the road surface.
The computer 1 outputs an operation speed-per-hour instruction to the motor controller 5, and the motor controller 5 controls the output torque and the rotating speed of the driving motor 4 by outputting a control current according to the operation speed-per-hour instruction of the computer 1.
Step S3, the data acquisition module 8 reports the acquired data (including torque and rotating speed) to the computer 1 through the bus network; in particular, the amount of the solvent to be used,
the power analyzer 7 measures the current and voltage of the motor controller and sends data to the data acquisition module 8;
the strain type torque tester 6 measures the torque and the rotating speed of the output shaft of the driving motor 4 and sends data to the data acquisition module 8.
Step S4, the computer 1 analyzes the received data, and determines whether the motor driving system meets the driving requirements of different road conditions. The judgment means that the reported rotating speed is converted into an actual running speed per hour and is compared with a simulated running speed per hour; if the actual running speed per hour can reach the simulated running speed per hour, judging that the motor controller 5 can output enough torque under different road conditions so as to drive the automobile to run according to an automobile running speed instruction sent by the computer 1; if the speed per hour of the simulation operation is achieved under each road condition, the motor controller can meet the driving requirements of different road conditions; otherwise, it is not;
and step S5, the computer 1 adjusts the road condition simulation control instruction according to the judgment result, and executes the steps again until the motor driving system meets the driving requirements of different road conditions and reaches the speed per hour of simulation operation under each road condition.
In summary, the embodiments of the present invention provide a road condition simulation test device and method for a motor driving system of an electric vehicle, so as to implement a driving performance test of the motor driving system under a simulated real and complex road condition, and solve the problem of single test function of a conventional test device.
Those skilled in the art will appreciate that all or part of the flow of the method implementing the above embodiments may be implemented by a computer program, which is stored in a computer readable storage medium, to instruct related hardware. The computer readable storage medium is a magnetic disk, an optical disk, a read-only memory or a random access memory.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (6)
1. The utility model provides an electric automobile motor drive system road conditions analogue test device which characterized in that includes: the system comprises a computer, a motion controller, a loading platform, a driving motor, a motor controller, a strain type torque tester, a power analyzer, a data acquisition module, a power distribution cabinet and a battery pack; wherein,
the computer is respectively connected with the motion controller, the motor controller and the data acquisition module through CAN buses and is used for sending control instructions to the motion controller and the motor controller, receiving data reported by the data acquisition module and processing and analyzing the data;
the motion controller is connected with the loading platform through a lead; the motion controller converts the control instruction sent by the computer into a load loading instruction and outputs the load loading instruction to the loading platform;
the loading platform, the strain type torque tester and the driving motor are sequentially connected; the loading platform is used for outputting loading torque to the driving motor according to the received load loading instruction;
the motor controller is respectively connected with the power analyzer and the driving motor through cables; the motor controller is used for controlling the output torque and the rotating speed of the driving motor by outputting control current according to the running speed-per-hour instruction of the computer;
the strain type torque tester is used for measuring the torque and the rotating speed of the output shaft of the driving motor through the torque sensor;
the data acquisition module is connected with the strain torque tester and the power analyzer through leads; the device is used for acquiring data measured by the strain type torque tester and the power analyzer and reporting the data to the computer;
the computer further comprises:
the system comprises a road condition simulation module, an instruction sending module and a data analysis module; wherein,
the road condition simulation module is used for compiling and designing road conditions of different forms for the electric automobile and setting simulation torque for each road condition;
the command sending module is used for sending a road condition simulation control command to the motion controller and sending a speed-per-run command to the motor controller;
the data analysis module is used for analyzing the received torque, rotating speed and power data and judging whether the motor controller can output enough torque under different forms of road conditions to drive the automobile to operate according to an operating speed instruction; converting the rotating speed information into an actual running speed per hour, and comparing the actual running speed per hour with a simulated running speed per hour; if the actual running speed per hour can reach the simulated running speed per hour, the torque output by the motor controller under the road condition is considered to be enough, the automobile can be driven to run according to the simulated running speed per hour in the running speed per hour instruction under the torque, otherwise, the torque output by the motor controller under the road condition is considered to be insufficient, and the automobile cannot be driven to run according to the simulated running speed per hour in the running speed per hour instruction under the torque.
2. The road condition simulation test device for the electric vehicle motor driving system according to claim 1, wherein the sequential connection of the loading table, the strain type torque tester and the driving motor further comprises:
an output shaft of the loading platform is connected with one end of the strain type torque tester through a coupler, and the other end of the strain type torque tester is connected with an output shaft of the driving motor through a coupler.
3. The road condition simulation test device for the electric vehicle motor driving system according to claim 2,
the road condition simulation control instruction comprises simulation torque information aiming at each road condition;
the run speed command includes simulated run speed information, i.e., speed and torque.
4. A working method of the road condition simulation test device for the electric vehicle motor driving system according to claims 1-3, characterized by comprising the following steps:
step S1, electrifying the road condition simulation test device of the electric automobile motor driving system;
step S2, the computer sends a road condition simulation control instruction to the motion controller and sends a speed-per-hour operation instruction to the motor controller;
step S3, the data acquisition module acquires data measured by the strain type torque tester and the power analyzer and reports the data to the computer;
step S4, the computer analyzes the received data, and judges whether the motor driving system meets the driving requirements of different road conditions: converting the rotating speed information into an actual running speed per hour, and comparing the actual running speed per hour with a simulated running speed per hour;
if the actual running speed per hour can reach the simulated running speed per hour, the torque output by the motor controller under the road condition is considered to be enough, and the automobile can be driven to run according to the simulated running speed per hour in the running speed per hour instruction under the torque;
otherwise, the torque output by the motor controller under the road condition is considered to be insufficient, and the automobile cannot be driven to run according to the simulated running speed per hour in the running speed per hour instruction under the torque;
and step S5, the computer adjusts the road condition simulation control command according to the judgment result, and executes the steps again until the motor driving system meets the driving requirements of different road conditions.
5. The method according to claim 4, wherein the step S2 further comprises:
the computer sends the road condition simulation control instruction to the motion controller, and the motion controller converts the road condition simulation instruction into a load loading instruction and outputs the load loading instruction to the loading platform; the loading platform outputs loading torque through an output shaft, and the loading torque is transmitted to the output shaft of the driving motor through the strain type torque tester;
the computer outputs a speed-per-time operation instruction to the motor controller, and the motor controller outputs a control current according to the speed-per-time operation instruction so as to control the driving motor to rotate according to the required speed and torque.
6. The method according to claim 4, wherein the step S3 further comprises:
the power analyzer measures the current and voltage of the motor controller and sends data to the data acquisition module;
the strain torque tester measures the torque and the rotating speed of the output shaft of the driving motor and sends data to the data acquisition module.
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