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A comparison of semi-active damping control strategies for vibration isolators of harmonic disturbances

Liu, Y., Waters, T.P. and Brennan, M.J. (2005) A comparison of semi-active damping control strategies for vibration isolators of harmonic disturbances Journal of Sound and Vibration, 280, (1-2), pp. 21-39. (doi:10.1016/j.jsv.2003.11.048).

Record type: Article

Abstract

Active vibration isolation systems are less commonly used than passive systems due to their associated cost and power requirements. In principle, semi-active isolation systems can deliver the versatility, adaptability and higher performance of fully active systems for a fraction of the power consumption. Various semi-active control algorithms have been suggested in the past, many of which are of the "on–off" variety. This paper studies the vibration isolation characteristics of four established semi-active damping control strategies, which are based on skyhook control and balance control. A semi-active damper is incorporated into a single-degree-of-freedom (s.d.o.f.) system model subject to base excitation. Its performance is evaluated in terms of the root-mean-square (r.m.s.) acceleration transmissibility, and is compared with those of a passive damper and an ideal skyhook damper. The results show that the semi-active system always provides better isolation at higher frequencies than a conventional passively damped system.

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Published date: 2005

Identifiers

Local EPrints ID: 28165
URI: http://eprints.soton.ac.uk/id/eprint/28165
ISSN: 0022-460X
PURE UUID: 839c823f-7e8a-41d7-bcf4-0a6df0e0e87e

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Date deposited: 28 Apr 2006
Last modified: 17 Jul 2017 16:02

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Contributors

Author: Y. Liu
Author: T.P. Waters
Author: M.J. Brennan

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