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Proceedings Paper

Active control of shallow spherical shells using piezoceramic sheets
Author(s): Sirous K. Ghaedi; Arun K. Misra
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Paper Abstract

This paper considers analysis and simulation of the dynamics and control of the elastic vibrations of a shallow spherical shell. Active control is carried out using piezoceramic materials (PZT, i.e. Lead Zirconate Titanate) as actuators. By using Galerkin's method and modal discretization, a mathematical model of the dynamics of the spherical shell is developed. The generalized forces produced by the actuators are determined considering the interaction between the shell structure and the PZT actuators via the principle of virtual work. Feedback control is carried out using two methods namely, LQR and Velocity Feedback methods. The effects of unmodeled modes and physical parameter uncertainty on the control performance of the system are investigated.

Paper Details

Date Published: 9 June 1999
PDF: 23 pages
Proc. SPIE 3668, Smart Structures and Materials 1999: Smart Structures and Integrated Systems, (9 June 1999); doi: 10.1117/12.350765
Show Author Affiliations
Sirous K. Ghaedi, McGill Univ. (Canada)
Arun K. Misra, McGill Univ. (Canada)

Published in SPIE Proceedings Vol. 3668:
Smart Structures and Materials 1999: Smart Structures and Integrated Systems
Norman M. Wereley, Editor(s)

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