CN213956794U - Starting jitter test system for electric drive assembly - Google Patents
Starting jitter test system for electric drive assembly Download PDFInfo
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- CN213956794U CN213956794U CN202023267042.1U CN202023267042U CN213956794U CN 213956794 U CN213956794 U CN 213956794U CN 202023267042 U CN202023267042 U CN 202023267042U CN 213956794 U CN213956794 U CN 213956794U
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Abstract
The utility model discloses an electric drive assembly starting shake test system, its characterized in that: the electric driving device comprises an electric driving assembly, wherein output ends at two ends of the electric driving assembly are respectively connected with a tire simulator through half shafts, an outer side end of the tire simulator is connected with an output end dynamometer, and torque sensors are arranged on two sides of the tire simulator. The utility model discloses electric drive assembly starting shake test system, simple structure, the simulation test process is simple, and the test accuracy is high, has stronger practicality and better application prospect.
Description
Technical Field
The utility model belongs to the technical field of the car, more specifically say, relate to an electric drive assembly starting shake test system.
Background
The starting buffeting has great influence on the durability of automobile parts and the operation stability and smoothness of the whole automobile. The motor and the reducer of the electric drive assembly are directly coupled, and the electric vehicle has a shaking phenomenon when starting and accelerating or when a power transmission system is subjected to disturbance torque. Mostly to the electric drive analysis shake condition alone among the prior art, the accuracy is low, can not be fine satisfy the test adjustment demand.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that prior art exists, provide a simple structure, the simulation test process is simple, and the electric drive assembly starting shake test system that the test accuracy is high.
In order to realize the purpose, the utility model discloses the technical scheme who takes does: the electric drive assembly start shake test system that provides which characterized in that: the electric driving device comprises an electric driving assembly, wherein output ends at two ends of the electric driving assembly are respectively connected with a tire simulator through half shafts, an outer side end of the tire simulator is connected with an output end dynamometer, and torque sensors are arranged on two sides of the tire simulator.
In order to make the above technical solution more detailed and concrete, the present invention further provides the following preferable technical solution to obtain satisfactory practical effect:
the tire simulator includes a first tire simulator and a second tire simulator connected to the electric drive assembly by a first half-shaft and a second half-shaft, respectively.
A first rotating speed sensor and a second rotating speed sensor are arranged between the first tire simulator and the first half shaft; and a second rotating speed sensor and a third torsion sensor are arranged between the second tire simulator and the second half shaft.
A first bearing seat is arranged on a transmission shaft between the first tire simulator and the first half shaft; and a second bearing seat is arranged on the transmission shaft between the second tire simulator and the second half shaft.
The first rotating speed sensor and the second rotating speed sensor are connected to a data acquisition front end, and the data acquisition front end acquires signals of the rotating speed sensors and outputs the signals to a data acquisition computer.
The output end dynamometer comprises a first output end dynamometer and a second output end dynamometer; the first tire simulator is connected to the first output end dynamometer through a first coupler, and the second tire simulator is connected to the second output end dynamometer through a second coupler.
And the first output end dynamometer and the second output end dynamometer are respectively connected with a first torsion sensor and a fourth torsion sensor.
And a test bed base is arranged below the starting jitter test system of the electric drive assembly.
The output end dynamometer is arranged on the test bed base, and the electric drive assembly is supported on the test bed base through an electric drive assembly support tool.
The first rotating speed sensor is supported on the test bed base through a first sensor base; and the second rotating speed sensor is supported on the test bed base through a second sensor base.
Compared with the prior art, the utility model, have following advantage: the utility model discloses electric drive assembly starting shake test system, simple structure, the simulation test process is simple, and the test accuracy is high, has stronger practicality and better application prospect.
Drawings
The contents of the drawings and the reference numerals in the drawings of the present specification will be briefly described as follows:
fig. 1 is a schematic structural diagram of the starting jitter test system of the electric drive assembly of the present invention;
labeled as: 1. a first output dynamometer; 2. a first torque sensor; 3. a first coupling; 4. a first tire simulator; 5. a first tooling flange; 6. a first bearing housing; 7. a second torque sensor; 8. a first rotational speed sensor; 9. a first half shaft; 10. an electric drive assembly; 11. a second half shaft; 12. a second rotational speed sensor; 13. a third torque sensor; 14. a second bearing housing; 15. a second tooling flange; 16. a second tire simulator; 17. a second coupling; 18. a fourth torque sensor; 19. a second output dynamometer; 20. a test bed base; 21. a first sensor base 22, a data acquisition front end; 23. an electric drive assembly support tool 24 and a second sensor base; 25. and a data acquisition computer.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The utility model discloses this kind of electric drive assembly starting shake test system, as shown in fig. 1, including electric drive assembly 10, the output of 10 both ends of electric drive assembly is connected with the tire simulator through the semi-axis respectively, and the output dynamometer machine is connected to the outside end of tire simulator, and tire simulator both sides all are equipped with torque sensor. The test system uses the tire simulator to simulate wheels, and the starting shake of the electric vehicle is simulated on the base of the test bed. Firstly, a test system is controlled to enable the rotating speed and the torque to reach the actual starting creeping working condition of the electric vehicle, the torque is controlled through an electric drive assembly 10, the rotating speed is controlled through an output end dynamometer, the torsion dampers are arranged on the inner side and the outer side of a tire simulator to measure the torque at the half shaft of the tire simulator and the torque transmitted to the ground by a corresponding vehicle, so that the starting creeping torque difference is obtained, and whether the front torque difference and the rear torque difference are within the designed target range or not is judged.
In the present invention, as shown in fig. 1, the tire simulator includes a first tire simulator 4 and a second tire simulator 16, and the first tire simulator 4 and the second tire simulator 16 are connected to the electric drive assembly 10 through a first half shaft 9 and a second half shaft 11, respectively. A first rotating speed sensor 8 and a second torsion sensor 7 are arranged between the first tire simulator 4 and the first half shaft 9; wherein the first rotation speed sensor 8 is used for measuring the rotation speed of the half shaft end of the first tire simulator 4, and the second torsion sensor 7 is used for measuring the torque of the half shaft end of the first tire simulator 4; the electric drive assembly 10 is arranged symmetrically on both sides. A second rotation speed sensor 12 and a third torsion sensor 13 are arranged between the second tire simulator 16 and the second half shaft 11, wherein the second rotation speed sensor 12 is used for measuring the rotation speed of the half shaft end of the second tire simulator 16, and the third torsion sensor 13 is used for measuring the torque of the half shaft end of the second tire simulator 16.
In the utility model, a first bearing seat 6 is arranged on the transmission shaft between the first tire simulator 4 and the first half shaft 9; a second bearing seat 14 is arranged on the transmission shaft between the second tire simulator 16 and the second half shaft 11. A first bearing block 6 and a second bearing block 14 to support the transmission. The transmission shaft ends on both sides are connected to the first tire simulator 4 and the second tire simulator 16 through the first tool flange 5 and the second tool flange 15, respectively.
The utility model discloses in, first rotational speed sensor 8 and second rotational speed sensor 12 are connected to data acquisition front end 22, and data acquisition front end 22 gathers and exports data acquisition computer 25 to the signal of rotational speed sensor.
In the utility model, the output end dynamometer comprises a first output end dynamometer 1 and a second output end dynamometer 19; the first tire simulator 4 is connected to the first output dynamometer 1 through the first coupling 3, and the second tire simulator 16 is connected to the second output dynamometer 19 through the second coupling 17. The output end dynamometer controls the rotating speed, the output end dynamometer measures the actual vehicle speed through a self-contained encoder so as to measure the power output rotating speed value corresponding to the first rotating speed sensor 8 and the second rotating speed sensor 12, and whether the rotating speed is obviously changed or not and whether the jitter value is in the design target range or not is analyzed.
The utility model discloses in, be connected with first torsion sensor 2 and fourth torsion sensor 18 on first output dynamometer 1 and the second output dynamometer 19 respectively. The first torsion sensor 2 and the fourth torsion sensor 18 are disposed outside the tire simulator, measure the torque of the vehicle transmitted to the ground through the tire, and analyze whether there is a significant change in the torque and the jitter value is within a design target range, corresponding to the output torque measured by the second torsion sensor 7 and the third torsion sensor 13.
The utility model discloses in, electric drive assembly starting shake test system below is equipped with test bench base 20. The output end dynamometer is arranged on the test bed base 20, and the electric drive assembly 10 is supported on the test bed base 20 through an electric drive assembly support tool 23. In the utility model, the first rotating speed sensor 8 is supported on the test bed base 20 through the first sensor base 21; the second tachometer sensor 12 is supported on the test stand base 20 by a second sensor base 24. The test stability is ensured by better simulation test.
The utility model discloses this kind of electric drive assembly start shake test system, this test device can be used to the electric motor car assembly start shake test, and this test device uses the tire simulator to simulate the wheel, simulates the electric motor car start shake on the rack, need the tire simulator of customization different parameters according to different electric motor cars; the signals acquired by the test comprise a rotating speed and torque signal of an output end of the electric drive assembly and a rotating speed and torque signal of the dynamometer at the output end; the rotating speed and torque signals of the output end of the electric drive assembly are measured by a first rotating speed sensor 8, a second rotating speed sensor 12, a second torque sensor 7 and a third torque sensor 13; the rotation speed of the output dynamometer is measured by its own encoder, and the torque signal of the output dynamometer is measured by the first torque sensor 2 and the fourth torque sensor 18. The signals of the first rotating speed sensor 8 and the second rotating speed sensor 12 are collected by the data collection front end and output to the data collection computer.
The utility model discloses this kind of electric drive assembly start shake test system, during the test, at first control test system makes rotational speed and moment of torsion reach actual electric motor car start wriggling operating mode (the motor control moment of torsion of electric drive assembly, output dynamometer machine control rotational speed), then sets for the operating mode according to real car experimental start data, wriggling operating mode means after the automobile starts, hangs D fender, under the condition that the brake is not stepped on the throttle to the pine, the automobile has an initial driving state, speed is very low this moment; the actual vehicle starting working condition refers to a process of stepping on an accelerator to accelerate the vehicle to the speed required by the driver after the creep working condition is reached. In the process, torque jitter can occur, so that the rotating speed shakes, and the test aims to obtain data of the torque and the rotating speed jitter under the starting working condition. The torque and the rotating speed at the output half shaft are measured through the first rotating speed sensor 8, the second rotating speed sensor 12, the second torque sensor 7 and the third torque sensor 13, the torque transmitted to the ground by the automobile is measured through the first torque sensor 2 and the fourth torque sensor 18, the corresponding actual speed of the automobile is measured through a dynamometer self-contained encoder, and then whether the obtained rotating speed and torque data meet a design target or not is analyzed. And judging whether the torque rotating speed has obvious jitter or not, and judging whether the jitter value meets the design target or not. If the test meets the design target, the test is finished, otherwise, parameter setting is carried out, such as proportion, integral time, differential time and the like, the test is carried out again after adjustment, and the test can provide improved basis for the control strategy of the electric drive assembly of the electric vehicle at the starting stage and reduce the starting jitter value.
The utility model discloses electric drive assembly starting shake test system, simple structure, the simulation test process is simple, and the test accuracy is high, has stronger practicality and better application prospect.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention has been described above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, and various insubstantial improvements or direct applications to other applications can be achieved by using the method and technical solution of the present invention, which all fall within the protection scope of the present invention.
Claims (9)
1. The utility model provides an electric drive assembly start shake test system which characterized in that: the device comprises an electric drive assembly, wherein output ends at two ends of the electric drive assembly are respectively connected with a tire simulator through a half shaft, the outer side end of the tire simulator is connected with an output end dynamometer, and two sides of the tire simulator are respectively provided with a torque sensor; the tire simulator includes a first tire simulator and a second tire simulator connected to the electric drive assembly by a first half-shaft and a second half-shaft, respectively.
2. An electric drive assembly launch jitter test system according to claim 1 wherein: a first rotating speed sensor and a second rotating speed sensor are arranged between the first tire simulator and the first half shaft; and a second rotating speed sensor and a third torsion sensor are arranged between the second tire simulator and the second half shaft.
3. An electric drive assembly launch jitter test system according to claim 2 wherein: a first bearing seat is arranged on a transmission shaft between the first tire simulator and the first half shaft; and a second bearing seat is arranged on the transmission shaft between the second tire simulator and the second half shaft.
4. An electric drive assembly launch jitter test system according to claim 3 wherein: the first rotating speed sensor and the second rotating speed sensor are connected to a data acquisition front end, and the data acquisition front end acquires signals of the rotating speed sensors and outputs the signals to a data acquisition computer.
5. An electric drive assembly launch jitter test system according to any one of claims 1 to 4 wherein: the output end dynamometer comprises a first output end dynamometer and a second output end dynamometer; the first tire simulator is connected to the first output end dynamometer through a first coupler, and the second tire simulator is connected to the second output end dynamometer through a second coupler.
6. An electric drive assembly launch jitter test system according to claim 5 wherein: and the first output end dynamometer and the second output end dynamometer are respectively connected with a first torsion sensor and a fourth torsion sensor.
7. An electric drive assembly launch jitter test system according to claim 2 wherein: and a test bed base is arranged below the starting jitter test system of the electric drive assembly.
8. An electric drive assembly launch jitter test system according to claim 7 wherein: the output end dynamometer is arranged on the test bed base, and the electric drive assembly is supported on the test bed base through an electric drive assembly support tool.
9. An electric drive assembly launch jitter test system according to claim 8 wherein: the first rotating speed sensor is supported on the test bed base through a first sensor base; and the second rotating speed sensor is supported on the test bed base through a second sensor base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023267042.1U CN213956794U (en) | 2020-12-30 | 2020-12-30 | Starting jitter test system for electric drive assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023267042.1U CN213956794U (en) | 2020-12-30 | 2020-12-30 | Starting jitter test system for electric drive assembly |
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| Publication Number | Publication Date |
|---|---|
| CN213956794U true CN213956794U (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023267042.1U Active CN213956794U (en) | 2020-12-30 | 2020-12-30 | Starting jitter test system for electric drive assembly |
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| CN (1) | CN213956794U (en) |
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2020
- 2020-12-30 CN CN202023267042.1U patent/CN213956794U/en active Active
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