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RESEARCH PAPERS: Vibration and Sound

Piezoelectric Pushers for Active Vibration Control of Rotating Machinery

[+] Author and Article Information
A. B. Palazzolo, R. R. Lin, R. M. Alexander

Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843-3123

A. F. Kascak

Army-NASA Lewis Research Center, MS 23/3, Cleveland, Ohio 44135

J. Montague

Sverdrup Technology Inc., Middleburg Heights, Ohio 44130

J. Vib., Acoust., Stress, and Reliab 111(3), 298-305 (Jul 01, 1989) (8 pages) doi:10.1115/1.3269856 History: Received January 01, 1988; Online November 23, 2009

Abstract

The active control of rotordynamic vibrations and stability by magnetic bearings and electromagnetic shakers has been discussed extensively in the literature. These devices, though effective, are usually large in volume and add significant weight to the stator. The use of piezoelectric pushers may provide similar degrees of effectiveness in light, compact packages. This paper contains analyses which extend quadratic regulator and derivative feedback control methods to the “prescribed displacement” character of piezoelectric pushers. The structrual stiffness of the pusher is also included in the theory. Tests are currently being conducted at NASA Lewis Research Center with piezoelectric pusher-based active vibration control. The paper presents results performed on the NASA test rig as preliminary verification of the related theory.

Copyright © 1989 by ASME
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