Share Email Print
cover

Proceedings Paper

Active vibration suppression using modular elements
Author(s): Allen J. Bronowicki; John W. Innis; Scott Casteel; George Dvorsky; Oscar S. Alvarez; Erik Rohleen
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A system for active suppression of structural vibrations has been developed. The system consists of piezoelectric ceramic actuator and sensor elements which can be either bonded on to or embedded in structural components. For active damping, these are placed at locations of high modal strain energy. For active isolation, locations of high disturbance transmissibility are chosen. Small analog and digital control electronics units have been developed which include all sensing, processing, and actuator drive electronics. The analog unit is appropriate for active damping using strategies such as positive position and integral force feedback. Damping levels in structures has been increased from 0.1% to 100% using a single analog controller. The digital system is capable of executing any algorithm having two inputs and two outputs. Active damping using feedback and active force cancellation using feedforward have been demonstrated. Block diagrams, specifications, photographs, and test results describing the elements of the modular vibration suppression system are presented.

Paper Details

Date Published: 6 May 1994
PDF: 12 pages
Proc. SPIE 2190, Smart Structures and Materials 1994: Smart Structures and Intelligent Systems, (6 May 1994); doi: 10.1117/12.175226
Show Author Affiliations
Allen J. Bronowicki, TRW Space and Technology Div. (United States)
John W. Innis, TRW Space and Technology Div. (United States)
Scott Casteel, TRW Space and Technology Div. (United States)
George Dvorsky, TRW Space and Technology Div. (United States)
Oscar S. Alvarez, TRW Space and Technology Div. (United States)
Erik Rohleen, TRW Space and Technology Div. (United States)


Published in SPIE Proceedings Vol. 2190:
Smart Structures and Materials 1994: Smart Structures and Intelligent Systems
Nesbitt W. Hagood, Editor(s)

© SPIE. Terms of Use
Back to Top