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Proceedings Paper

Vibration control of a flexible beam through a smart structure concept
Author(s): A. Prasad Goud; Mangalanathan Umapathy
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Paper Abstract

Active control has become important in structural systems as an efficient tool for vibration suppression. A cantilever beam has been chosen as a flexible structure. The entire structure (beam with sensors and actuators) is modeled by Finite Element Method (FEM) by using two different elements. A special beam element, which includes sensor and actuator dynamics has been developed. This finite element is used to model the regions where piezoelectrics are bonded and the rest of the structure is modeled with regular beam elements. Since much of the flexible energy is contained by the first few modes, controlled is designed to suppress only the first two modes. The state-space model of the system is obtained by appropriate method from the FEM model. The significant structural vibrations have been suppressed by using State Feedback and Optimal Output Feedback control laws. The optimal sensor/actuator location for controlling the first two modes has been done.

Paper Details

Date Published: 16 April 1998
PDF: 12 pages
Proc. SPIE 3321, 1996 Symposium on Smart Materials, Structures, and MEMS, (16 April 1998); doi: 10.1117/12.305548
Show Author Affiliations
A. Prasad Goud, DRDO (India)

Published in SPIE Proceedings Vol. 3321:
1996 Symposium on Smart Materials, Structures, and MEMS
Vasu K. Aatre; Vijay K. Varadan; Vasundara V. Varadan, Editor(s)

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