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TECHNICAL PAPERS

Time-Varying Controller for Temperature-Dependent Viscoelasticity

[+] Author and Article Information
Luciano A. Silva

Embraer - F20/1 2 Andar - SAR Av Brigadeiro Faria Lima, 2170 12227-901, São José dos Campos, São Paulo - Brasil

Eric M. Austin

Department of Mechanical Engineering, Clemson University, 218 Fluor Daniel Building, Box 340921, Clemson, SC 29634-0921

Daniel J. Inman

Center for Intelligent Material Systems and Structures, Mail Code 0261, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061

J. Vib. Acoust 127(3), 215-222 (Jun 01, 2005) (8 pages) doi:10.1115/1.1897740 History: Received January 21, 2004; Revised December 06, 2004; Accepted December 07, 2004; Online May 18, 2005

Abstract

There are internal-variable techniques that account for the frequency-dependent behavior of viscoelastic materials, but the temperature dependence of these materials has received much less attention. Two methods for designing controllers robust to temperature disturbances are given: (1) Modal reference adaptive control and (2) time-varying pole placement control. Examples that demonstrate the strengths and weaknesses of each are given. The results show that it is possible to achieve vibration reduction while simultaneously rejecting the effects of a temperature disturbance. This work shows that both the frequency and temperature dependence of viscoelastic materials can be modeled with internal variables.

Copyright © 2005 by American Society of Mechanical Engineers
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