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Hybrid wave/mode active vibration control

Mei, C., Mace, B.R. and Jones, J.W. (2001) Hybrid wave/mode active vibration control Journal of Sound and Vibration, 247, (5), pp. 765-784. (doi:10.1006/jsvi.2001.3795).

Record type: Article

Abstract

A hybrid approach to active vibration control is described in this paper. It combines elements of both wave and mode approaches to active control and is an attempt to improve on the performance of these approaches individually. In the proposed hybrid approach, wave control is first applied at one or more points in the structure. It is designed on the basis of the local behaviour of the structure and is intended to absorb vibrational energy, especially at higher frequencies. Then modal control is applied, being designed on the basis of the modified global equations of motion of the structure-plus-wave controller. These are now normally non-self-adjoint. Since the higher order modes are relatively well damped, hybrid control improves the model accuracy and the robustness of the system and gives better broadband vibration attenuation performance. Hybrid wave/mode active vibration control is described with specific reference to the control of a cantilever beam. The particular case considered is that of collocated, point force/sensor feedback wave control combined with modal control designed using pole placement. Numerical and experimental results are presented.

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Published date: 2001

Identifiers

Local EPrints ID: 9984
URI: http://eprints.soton.ac.uk/id/eprint/9984
ISSN: 0022-460X
PURE UUID: 35d10f42-9985-44fa-8cb6-a52b3964d550

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Date deposited: 21 Dec 2004
Last modified: 17 Jul 2017 17:08

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Contributors

Author: C. Mei
Author: B.R. Mace
Author: J.W. Jones

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