Damping matching test method and system for automobile suspension system based on magnetic rheology technology

A magneto-rheological damper and automobile suspension technology, which is applied in vehicle suspension/shock absorbing mechanism testing, vehicle testing, machine/structural component testing, etc. It can solve the problem of long test period, difficult to achieve damping matching, and inability to continue Adjustment and other issues to achieve the effect of shortening the test cycle and reducing the test intensity

Inactive Publication Date: 2009-05-13
CHONGQING UNIV
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  • Abstract
  • Description
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  • Application Information

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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 the structural parameters and damping oil in advance, it cannot be adjusted continuously. This kind of test result is difficult to achieve the optimal damping matching.

Method used

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  • Damping matching test method and system for automobile suspension system based on magnetic rheology technology
  • Damping matching test method and system for automobile suspension system based on magnetic rheology technology
  • Damping matching test method and system for automobile suspension system based on magnetic rheology technology

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Embodiment Construction

[0026] The bench test of damping matching as shown in Figure 1 uses a 1 / 4 vehicle model, consisting of a frame 1, a sprung mass that can move freely in the vertical direction in the frame 1, an unsprung mass 5, which is connected to the action head 6, And the force sensor 3, the displacement sensor 4, the spring 8 and the magnetorheological damper (MRD) 7 between the sprung mass 2 and the unsprung mass 5, and the matching peripheral equipment includes a peak detection module, Switch analog switches, potentiometers and feedback controllers. On the equipment connection, the signal line of the displacement sensor is connected to the peak detection module, the output signal of the peak detection module is connected to the switch analog switch, and the switch analog switch converts the required MRD restoration damping value and compression damping value preset by the potentiometer into The voltage signal is connected to the feedback controller as a given value, the control line of the ...

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Abstract

This invention discloses a car suspended damp matching test method and system based on a magneto-rheopectic technology, in which, the system is composed of an up-sprung mass, an unsprung mass, a spring, a magneto-rheopectic damper, a force sensor, a shift sensor, a switch analog switch of an outside peak test module and a feed back controller. Before testing, related voltage signals are got by designing necessary recovered damp value and the compressed damp value of the magneto-rheopectic damper, when an operation head moves up and down to excite the system and the shift sensor tests the relative signal peak value of the piston, the relative voltage signals are input to the feedback controller as the given value by the switch analog switch to control the damper to reach the designed recovered damp value, the compressed damp value and the optimum matching.

Description

Technical field [0001] The invention belongs to the damping matching test technology in the design of 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 (up to ten, or even dozens) of dampers with different damping values ​​in advance to 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, and because the damping force is determined in advance by the structural parameters and the damping oil, it cannot be adjusted continuously. The test result is difficult to achieve the optimal damping match. Summary of the invention [0003] T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/04G01M17/007
Inventor 余淼廖昌荣陈伟民毛林章董小闵张红辉
Owner CHONGQING UNIV
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