Combined Piezoelectric-Hydraulic Actuator Based Active Vibration Control for Rotordynamic System

[+] Author and Article Information
P. Tang, A. Palazzolo

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

A. Kascak

U.S. Army at NASA Lewis, Cleveland, OH

G. Montague

Sverdrup at NASA Lewis, Cleveland, OH

W. Li

Chemical Engineering Department, Texas A & M University, College Station, TX 77843-3123

J. Vib. Acoust 117(3A), 285-293 (Jul 01, 1995) (9 pages) doi:10.1115/1.2874449 History: Received March 01, 1993; Online February 26, 2008


Previous research by the authors concentrated on using piezoelectric actuators for active vibration control (AVC) of rotating machinery. The current work extends this by positioning the piezo-actuator remotely from the controlled structure and transmitting the control force via a hydraulic line and two pistons. Liquid plastic (LP) is employed as a transmission “fluid” to obtain a high bulk modulus and low leakage. The paper presents results for bulk moduli measurement, and bench and rig tests for the entire actuator system. These results show the high effectiveness of the hybrid actuator for controlling vibrations on a laboratory rotor test rig.

Copyright © 1995 by The American Society of Mechanical Engineers
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