CN110646701A - Two-gear AMT test bench for electric vehicle and test method thereof - Google Patents

Two-gear AMT test bench for electric vehicle and test method thereof Download PDF

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Publication number
CN110646701A
CN110646701A CN201911006813.0A CN201911006813A CN110646701A CN 110646701 A CN110646701 A CN 110646701A CN 201911006813 A CN201911006813 A CN 201911006813A CN 110646701 A CN110646701 A CN 110646701A
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CN
China
Prior art keywords
gear
amt
test
control platform
gear shifting
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Pending
Application number
CN201911006813.0A
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Chinese (zh)
Inventor
江涛
胡伟
何桥
王弢
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Wanda Of Cherry Guizhou Passenger Vehicle Co Ltd By Shares
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Wanda Of Cherry Guizhou Passenger Vehicle Co Ltd By Shares
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Priority to CN201911006813.0A priority Critical patent/CN110646701A/en
Publication of CN110646701A publication Critical patent/CN110646701A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005Testing of electric installations on transport means
    • G01R31/006Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/382Arrangements for monitoring battery or accumulator variables, e.g. SoC
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00Testing or monitoring of control systems or parts thereof
    • G05B23/02Electric testing or monitoring
    • G05B23/0205Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0208Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system

Abstract

The invention discloses a two-gear AMT (automated mechanical transmission) test bed for an electric automobile and a test method thereof, belonging to the technical field of test bed equipment. According to the invention, the test object two-gear AMT is placed under the working condition close to the running condition of the real vehicle for testing, the test result is more reliable and accurate, and thus, the gear shifting is faster and smoother.

Description

Two-gear AMT test bench for electric vehicle and test method thereof
Technical Field
The invention belongs to the technical field of test bed equipment, and particularly relates to a two-gear AMT test bed for an electric automobile and a test method thereof.
Background
The pure electric vehicle is used as a main tool of urban traffic, along with the rapid development of the pure electric vehicle, energy conservation and emission reduction are vigorously advocated in China, the performance requirements of people on pure electric vehicle starting are higher and higher, the main performances of the pure electric vehicle comprise economy and dynamic performance, the economy indexes mainly refer to the SOC value, the driving range and the like of the electric vehicle, the dynamic indexes mainly refer to the highest speed, the maximum climbing speed, the acceleration performance and the like of the electric vehicle, the advantages and the disadvantages of the performance indexes are closely related to the power transmission system of the electric vehicle, at the present stage, the transmission system of the pure electric vehicle basically adopts a transmission with a fixed speed ratio, and a high-speed and high-power driving motor is required to be matched to obtain good performance, and the requirement on the performance of the driving motor is higher, and the rotating speed of the high-speed driving motor has higher efficiency only near the rated rotating speed, however, in other rotation speed regions, the working efficiency of the driving motor is relatively low, so that a large amount of energy is wasted, and the cost is increased.
Therefore, the two-gear AMT transmission can reduce the requirements on the performance of the driving motor, fully utilize the efficiency of the motor, reduce the energy consumption, realize the higher driving torque in a constant torque area and provide the higher rotating speed in a constant power area so as to meet the requirements of the electric automobile on the performances of acceleration, climbing, high-speed driving and the like, and the control strategy of the two-gear AMT gear shifting process of the pure electric automobile must be designed and verified to realize the performance requirements; however, the traditional gear shifting process control strategy mainly focuses on the traditional AMT and DCT, while the traditional gear shifting process control strategy of AMT and DCT mainly is the coordination control research on the clutch and the engine, because the clutch-free pure electric vehicle has no engine and the clutch is eliminated, the traditional gear shifting process control strategy cannot be directly transplanted to the gear shifting process of the pure electric vehicle, so the gear shifting process control strategy for the pure electric vehicle needs to be redesigned and verified for testing, thereby realizing faster and smoother gear shifting.
The prior art is verified to the process of shifting of two fender AMTs, only the independent verification two keep off AMT and at the in-process of shifting beat the tooth phenomenon, shift the time and shift the performance such as the impact degree that the process produced, can not effectual verification two keep off the comprehensive properties of AMT under real vehicle running state to lead to when the best process control strategy of shifting that makes two fender AMTs of electric automobile, can not get effectual verification, thereby lead to electric automobile to take place to shift when shifting slowly, shift unsmooth scheduling problem.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the utility model provides a two keep off AMT test bench and test method for electric automobile car to solve among the prior art only independent verification two keep off the AMT and at the performance such as the impact degree that the in-process of shifting gears beat tooth phenomenon, the time of shifting gears and the process of shifting gears produced, can not effectual verification two keep off the comprehensive properties of AMT under real car running state, thereby it is slow to lead to two to keep off the AMT and take place to shift gears when applying in the middle of the real car, shift gears unsmooth scheduling problem.
The technical scheme of the invention is as follows: the utility model provides an automobile-used two fender AMT test bench, including dSpace control platform, machine controller, actuating mechanism shifts, PMSM, two keep off the AMT, inertia flywheel group and dynamometer machine, dSpace control platform passes through the CAN bus respectively with machine controller, actuating mechanism and dynamometer machine shift link to each other, the machine controller output links to each other with PMSM's control input end, PMSM output shaft and two input shafts that keep off the AMT link to each other, the one end that inertia flywheel group links to each other with the output shaft that keeps off the AMT two, the other end links to each other with the output of dynamometer machine.
The test bench further comprises a power battery and a battery management module, and the power battery is connected with the battery management module and the motor controller.
And a speed increasing box is connected between the two-gear AMT and the inertia flywheel set.
The test bench further comprises a torque sensor I and a torque sensor II, and signal lines of the torque sensor I and the torque sensor II are connected with a signal receiving port of the dSpace control platform.
A test method of a two-gear AMT test bench for an electric automobile comprises the following steps:
step 1, after the two-gear AMT test bed for the electric vehicle is lapped, turning on a power switch, electrifying the whole equipment and unlocking a P gear of the two-gear AMT;
step 2, sending an acceleration instruction to the gear shifting execution mechanism through the dSpace control platform to control the opening degree of an accelerator pedal; the output torque of the permanent magnet synchronous motor is set through the dSpace control platform, then an instruction is sent to the motor controller, and the permanent magnet synchronous driving motor is controlled to work according to the set linear calibration output;
step 3, controlling the loading capacity of the dynamometer to ensure that the rotating speed of the permanent magnet synchronous driving motor is slowly increased, and avoiding galloping until the transmission finishes gear up;
step 4, controlling the driving torque of the permanent magnet driving motor to keep constant by the dSpace control platform, and controlling the load of the dynamometer to rise until the vehicle speed is reduced to a gear shifting point to realize gear reduction;
and 5, continuously sending an acceleration instruction to the gear shifting execution mechanism control unit through the dSpace control platform, repeating the step 3 and the step 4, realizing gear shifting and gear shifting, and recording the running condition of the two-gear AMT in the gear shifting process.
The invention has the beneficial effects that: the two-gear AMT test bed for the electric vehicle is built on the basis of the dSpace control platform, the inertia of the whole vehicle is simulated through an inertia flywheel set, the load capacity of the whole vehicle is simulated through a dynamometer, the two-gear AMT is placed in a simulation environment close to the real vehicle, the ascending and descending process tests can be effectively completed, the matched gear shifting execution mechanism and the gear shifting control strategy formulated for the gear shifting execution mechanism can be effectively verified, and therefore the gear shifting is faster and smoother.
Drawings
FIG. 1 is a schematic view of the flow structure of the present invention.
Detailed Description
As shown in fig. 1, the embodiment of the invention discloses a two-gear AMT test bench for an electric vehicle, which comprises a power battery 1, a battery management module 2, a dSpace control platform 3, a motor controller 4, a gear shifting execution mechanism 5, a permanent magnet synchronous drive motor 6, a torque sensor i 7, a two-gear AMT8, a torque sensor ii 9, an acceleration box 10, an inertia flywheel set 11 and a dynamometer 12, wherein the motor controller 4 is produced by fuzhou xinlianda electronic technology limited company, and has a model number: SDJ-40KW, torque sensor I7 and torque sensor II 9 are produced by Shanghai Evone electromechanical device Limited company, model: T40B, dynamometer (12) manufactured by hunan instrument dynamic testing instruments ltd, model: CAC 450.
dSpace control platform 3 links to each other with motor controller 4, actuating mechanism 5 and dynamometer 12 respectively through the CAN bus, and motor controller 4 output links to each other with permanent magnet synchronous drive motor 6's control input end, and permanent magnet synchronous drive motor 6 output shaft keeps off AMT8 input shaft two and links to each other, and the one end of inertia flywheel group 11 links to each other with two fender AMT8 output shafts, and the other end links to each other with the dynamometer 12 output. The test bench further comprises a power battery 1 and a battery management module 2, the power battery 1 is respectively connected with the battery module 2 and the motor controller 4, the power battery 1 and the battery management module 2 are used in a matched mode, the power battery 1 and the battery management module 2 are mainly used for accurately estimating the state of charge (SOC) of the power battery pack, namely the battery residual capacity, the SOC is guaranteed to be maintained in a reasonable range, and damage to the battery due to overcharge or over-discharge is prevented.
The inertia flywheel set 11 is used for simulating the inertia of the whole vehicle, a speed increasing box 10 is connected between the two-gear AMT8 and the inertia flywheel set 11, and the speed increasing box 10 is adopted for reducing the requirement on the inertia of the inertia flywheel set 11; the dynamometer 12 is used for reversely loading and simulating driving resistance, so that the speed regulating system is ensured to run at a stable speed in the gear shifting process, and the gear shifting process is ensured to be carried out under the working condition according with the running of the electric automobile.
The test bench still includes torque sensor I7 and torque sensor II 9, torque sensor I7 and torque sensor II 9's signal line links to each other with dSpace control platform 3's signal reception port for the real-time input and the output torque of two fender AMT8 are measured accurately, can control permanent magnet drive motor 6's rotational speed and output torque more conveniently.
According to the invention, the comprehensive performance of the two-gear AMT8 is tested by simulating the running condition of a real vehicle and through the gear shifting action, and then the gear shifting process of the two-gear AMT8 is recorded and analyzed.
A test method of a two-gear AMT test bench for an electric automobile comprises the following steps:
step 1, after the two-gear AMT test bed for the electric vehicle is lapped, turning on a power switch, electrifying the whole equipment, and unlocking a P gear of the two-gear AMT 8;
step 2, sending an acceleration instruction to a control unit of a gear shifting execution mechanism 5 through a dSpace control platform 3, and controlling the opening of an accelerator pedal to be 10%; the output torque of the permanent magnet synchronous motor 6 is set through the dSpace control platform 3, then an instruction is sent to the motor controller 4, and the permanent magnet synchronous driving motor 6 is controlled to work according to the set linear calibration output;
step 3, controlling the loading capacity of the dynamometer 12 by the dSpace control platform 3, ensuring that the rotating speed of the permanent magnet synchronous driving motor 6 is slowly increased, and avoiding galloping until the transmission finishes gear up;
step 4, controlling the driving torque of the permanent magnet driving motor 6 to keep constant by the dSpace control platform 3, and controlling the load of the dynamometer 12 to rise until the vehicle speed is reduced to a gear shifting point to realize gear reduction;
and 5, continuously sending an acceleration instruction to the gear shifting execution mechanism 5 through the dSpace control platform 3, controlling the opening degree of an accelerator pedal to increase by 10%, repeating the step 3 and the step 4, realizing gear up and gear down until the opening degree of the accelerator pedal increases to 80%, and recording the running condition of the two-gear AMT8 in the gear shifting process.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and therefore, the scope of the present invention should be determined by the scope of the claims.

Claims (5)

1. The utility model provides an automobile-used two fender AMT test bench, its characterized in that of electric automobile: electric automobile is with keeping off AMT test bench two and includes dSpace control platform (3), machine controller (4), actuating mechanism (5) shift, permanent magnetism synchronous drive motor (6), two keep off AMT (8), inertia flywheel group (11) and dynamometer machine (12), dSpace control platform (3) link to each other with machine controller (4) respectively through the CAN bus, actuating mechanism (5) and dynamometer machine (12) shift, machine controller (4) output links to each other with the control input of permanent magnetism synchronous drive motor (6), permanent magnetism synchronous drive motor (6) output shaft and two input shafts that keep off AMT (8) link to each other, the one end of inertia flywheel group (11) links to each other with the output shaft that keeps off AMT (8) two, the other end links to each other with the output of dynamometer machine (12).
2. The two-gear AMT test bed for the electric automobile according to claim 1, characterized in that: the test bench further comprises a power battery (1) and a battery management module (2), wherein the power battery (1) is connected with the battery management module (2) and a motor controller (4).
3. The two-gear AMT test bed for the electric automobile according to claim 1, characterized in that: and a speed increasing box (10) is connected between the two-gear AMT (8) and the inertia flywheel set (11).
4. The two-gear AMT test bed for the electric automobile according to claim 1, characterized in that: the test bench still includes torque sensor I (7) and torque sensor II (9), the signal line of torque sensor I (7) and torque sensor II (9) link to each other with the signal reception port of dSpace control platform (3).
5. The test method of the two-gear AMT test bench for the electric vehicle as claimed in claim 1, characterized in that: the method comprises the following steps:
step 1, after the two-gear AMT test bed for the electric vehicle is lapped, turning on a power switch, electrifying the whole equipment, and unlocking a P gear of a two-gear AMT (8);
step 2, sending an acceleration instruction to a control unit of a gear shifting execution mechanism (5) through a dSpace control platform (3) to control the opening of an accelerator pedal; the output torque of the permanent magnet synchronous motor (6) is set through the dSpace control platform (3), then an instruction is sent to the motor controller (4), and the permanent magnet synchronous drive motor (6) is controlled to output according to the set linear calibration;
step 3, controlling the loading amount of the dynamometer (12), ensuring that the rotating speed of the permanent magnet synchronous driving motor (6) is slowly increased, and avoiding galloping until the transmission finishes gear up;
step 4, controlling the driving torque of the permanent magnet driving motor (6) to keep constant by the dSpace control platform (3), and controlling the load of the dynamometer (12) to increase until the vehicle speed is reduced to a gear shifting point to realize gear reduction;
and 5, continuously sending an acceleration instruction to a control unit of the gear shifting actuating mechanism (5) through the dSpace control platform (3), repeating the step 3 and the step 4, realizing gear shifting and gear shifting, and recording the running condition of the two-gear AMT (8) in the gear shifting process.
CN201911006813.0A 2019-10-22 2019-10-22 Two-gear AMT test bench for electric vehicle and test method thereof Pending CN110646701A (en)

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Application Number Priority Date Filing Date Title
CN201911006813.0A CN110646701A (en) 2019-10-22 2019-10-22 Two-gear AMT test bench for electric vehicle and test method thereof

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Application Number Priority Date Filing Date Title
CN201911006813.0A CN110646701A (en) 2019-10-22 2019-10-22 Two-gear AMT test bench for electric vehicle and test method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111638062A (en) * 2020-05-12 2020-09-08 杭州沃镭智能科技股份有限公司 Performance testing device and method for AMT power cylinder gear selecting and shifting actuating mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111638062A (en) * 2020-05-12 2020-09-08 杭州沃镭智能科技股份有限公司 Performance testing device and method for AMT power cylinder gear selecting and shifting actuating mechanism
CN111638062B (en) * 2020-05-12 2021-05-25 杭州沃镭智能科技股份有限公司 Performance testing device and method for AMT power cylinder gear selecting and shifting actuating mechanism

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