An Energy-Based Parametric Control Approach for Structural Vibration Suppression via Semi-Active Piezoelectric Networks

[+] Author and Article Information
K. W. Wang, J. S. Lai, W. K. Yu

Mechanical Engineering Department, The Pennsylvania State University, University Park, PA

J. Vib. Acoust 118(3), 505-509 (Jul 01, 1996) (5 pages) doi:10.1115/1.2888213 History: Received August 01, 1994; Revised March 01, 1995; Online February 26, 2008


A structural vibration control concept, using piezoelectric materials shunted with real-time adaptable electrical networks, has been investigated. The variable resistance and inductance in an external RL circuit are used as control inputs. An energy-based parametric control scheme is created to reduce the total system energy (the main structure mechanical energy plus the electrical and mechanical energies of the piezoelectric material and electrical circuit) while minimizing the energy flowing into the main structure. Stability of the closed-loop system is proved. The performance of the controller is examined through analyzing a beam example. It is shown that the structure energy level and vibration amplitude can be suppressed effectively.

Copyright © 1996 by The American Society of Mechanical Engineers
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