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RESEARCH PAPERS

Vibration and Shock Isolation Performance of a Semi-Active “On-Off” Damper

[+] Author and Article Information
S. Rakheja

Institute for Manufacturing Technology, National Research Council, Canada

S. Sankar

Department of Mechanical Engineering, Concordia University, Montreal, Canada

J. Vib., Acoust., Stress, and Reliab 107(4), 398-403 (Oct 01, 1985) (6 pages) doi:10.1115/1.3269279 History: Received June 03, 1985; Online November 23, 2009

Abstract

The concept of an “on-off” damper employing the feedback signals from directly measurable variables is proposed. A control scheme utilizing the directly measurable relative position and relative velocity signals to produce the command signal is configured. The on-off damping mechanism can be achieved through the modulation of orifice area in a conventional hydraulic damper, using a two position on-off valve driven by the command signal. The shock and vibration isolation characteristics of the proposed on-off damper are evaluated through computer simulations. The shock and vibration isolation performance characteristics of the proposed damper are compared to the performance characteristics of a passive and an on-off damper utilizing the feedback from absolute and relative velocity signals.

Copyright © 1985 by ASME
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