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IMPROVING THE PERFORMANCE OF A VIBRATION NEUTRALISER BY ACTIVELY REMOVING DAMPING

โœ Scribed by M. Kidner; M.J. Brennan

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
194 KB
Volume
221
Category
Article
ISSN
0022-460X

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โœฆ Synopsis

This paper describes the design of an active vibration neutraliser. The aim of the active element in the neutraliser is to reduce the internal damping of the device and thus make it more eective. Six dierent control conยฎgurations are considered and the input mechanical impedance of each conยฎguration is calculated. This is used to assess the ecacy of each conยฎguration. To study the behaviour of an active neutraliser a beam-like neutraliser is designed and built with piezoceramic patches providing the active element. An analytical model of this device is presented. Simulations and experimental results show that for two control conยฎgurations the amplitude of a mass-like structure with the neutraliser attached remains ยฎnite at a resonance of the composite system even when damping is entirely removed from the neutraliser, by the control system.

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