Damping matching test method and system based on magneto-rheological technology for automobile suspension system

A magnetorheological damper, automotive suspension technology, applied in vehicle testing, machine/structural component testing, instruments, etc., can solve the problems of long test cycle, difficulty in achieving damping matching, and inability to continuously adjust, and shorten the Test period, effect of reducing test intensity

Inactive Publication Date: 2006-07-26
CHONGQING UNIV
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Problems solved by technology

This kind of test to replace the damper is labor-intensive, the test period is long, and the cost is high. Moreover, since the damping force has been determined by th

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  • Damping matching test method and system based on magneto-rheological technology for automobile suspension system
  • Damping matching test method and system based on magneto-rheological technology for automobile suspension system
  • Damping matching test method and system based on magneto-rheological technology for automobile suspension system

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Example Embodiment

[0028] Such as figure 1 The bench test system with matching damping is shown. The system is composed of test vehicle, excitation platform, magnetorheological damper 2~5, displacement sensor 7~10, force sensor 12~15, peak detection module, switch analog switch and feedback The controller 6 is composed of the four wheels of the car respectively placed on the four actuating heads 11 of the excitation platform, and the four actuating heads move up and down to simulate the driving conditions of the car on the road and test the suspension of the vehicle The installation is a magnetorheological damper (MRD) 2-5, a displacement sensor (LVDT) 7-10 and a force sensor 12-15 are also installed on the vehicle suspension, and the displacement sensor, magnetorheological damper and force The sensors are respectively connected with the peripheral peak detection module, the switching analog switch and the feedback controller 6 through signal lines to form a vehicle damping matching test system tha...

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Abstract

The invention discloses a method and a system for testing vehicle suspension damp match based on a magnetic flow variation technology. The system comprises: testing vehicle, an exciting platform, a magnetic flow variation damper, a power sensor, an offset sensor, a testing system constructed by an analog switch of external peak value testing module and a feedback controller. The method comprises: before testing, setting needed magnetic flow variation damper recovering damp value, compressing damp value and getting corresponding voltage signal; exciting the system by the up and down actions of the exciting platform; detecting piston relative offset signal peak by the offset sensor; switching the analog switch to input the voltage signal of the recovering damp value and the compressing damp value to the feedback controller as constant value; controlling the magnetic flow variation damper via the feedback controller to reach the set recovering damp and compressing damp value and get the optimum matching.

Description

Technical field [0001] The invention belongs to the vehicle damping matching test technology in the design of the automobile suspension system. Background technique [0002] Damping matching is a key link in the design of automobile suspensions, and damping matching tests must be carried out before new models of various automobile OEMs are put into production. At present, the method used in the damping matching test of various factories is to design a group of dampers with different damping values ​​(as many as ten or even dozens) in advance, and perform damping matching tests under different parameters on the test bench until one is selected. The kind of damper considered the best match. This kind of test is labor-intensive, long test period, and high cost. Moreover, because the damping force is determined in advance by the structural parameters and damping oil, it cannot be adjusted continuously, and it is difficult to achieve the optimal damping ma...

Claims

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Application Information

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IPC IPC(8): G01M17/007
Inventor 余淼廖昌荣陈伟民
Owner CHONGQING UNIV
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