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Test method for automotive transmission dynamo-static coupling torsional fatigue

A technology of torsional fatigue, dynamic and static coupling, applied in the field of performance test of automobile transmission system, can solve the problems of low test accuracy and efficiency, lack of test, no device and method for reproducing dynamic torque by static torsion test device, etc.

Active Publication Date: 2013-03-20
重庆理工清研凌创测控科技有限公司
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AI Technical Summary

Problems solved by technology

At present, the torsional fatigue test of the automobile transmission system is mainly to use the static torsional fatigue test on the transmission, the drive shaft, etc. indoors, that is, to test the alternating load of sine and other amplitudes on the static torsion test bench, and to carry out the test with the dynamic driving of the automobile transmission system. The loads are very different, the test accuracy and efficiency are not high, and it is easy to appear over-test and under-test
At present, there is no torsional fatigue test system for automobile drive train including clutch, transmission, half shaft, etc. at home and abroad, and there is no device and method for reproducing dynamic torque on a static torsion test device

Method used

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  • Test method for automotive transmission dynamo-static coupling torsional fatigue

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Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] A dynamic and static coupled torsional fatigue test method for an automobile drive train is adopted in the method, a dynamic and static coupled torsional fatigue test system for an automotive drive train is used. The structure of the dynamic and static coupling torsional fatigue test system of the automobile transmission system is as follows: figure 1 As shown, it includes computer, controller, two fixed supports, torque sensor and torsion actuator. The controller is connected with the computer, the controller controls the torsion actuator, and the torque sensor is connected with the controller.

[0039] The output ends of the two output half shafts of the transmission are fixed with fixed supports, and the forward and reverse torsion is applied through the torsion actuator to apply torque to the entire transmission system. The whole te...

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Abstract

The invention discloses a test method for automotive transmission dynamo-static coupling torsional fatigue. The method comprises steps of collecting transmission dynamic torque during car driving; installing the car transmission on a test system; calculating a frequency responding function of the system; calculating first excitation signals of a torsional actuator; exciting the torsional actuator by using the first excitation signals, collecting response signals of a torsional sensor, calculating responding error, calculating drive signal correction quantity corresponding to the error and recording a final drive signal when the error is no more than 5%; and regarding the final drive signal as input and conducting the torsional fatigue test of the car transmission. By the aid of the hydraulic servo torsional actuator and the remote parameter control, the dynamic torque of the car transmission during actual driving can be simulated accurately indoors under the condition of static torsion, and the test based on actual driving torsion has the advantages of being simple, efficient and accurate.

Description

technical field [0001] The invention relates to a performance test method of an automobile transmission system, in particular to a dynamic and static coupling torsional fatigue test method of an automobile transmission system. Background technique [0002] The automobile transmission system is an important part of the automobile, mainly including clutches, gearboxes, axle shafts, etc. These parts with elasticity and moment of inertia are combined to play the role of transmitting torque for the driving of the automobile. The automobile transmission system is subjected to alternating torque during actual driving, and most of the damage to its components and assemblies is due to torsional fatigue failure. Therefore, torsional fatigue tests and torsional fatigue life evaluation must be carried out on the automobile transmission system. At present, the torsional fatigue test of the automobile transmission system is mainly to use the static torsional fatigue test on the transmissi...

Claims

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Application Information

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IPC IPC(8): G01M13/02G01M17/007
Inventor 邹喜红石晓辉谯凯
Owner 重庆理工清研凌创测控科技有限公司
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