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Proceedings Paper

Suppression of distributed dynamical deflection by piezoelectric materials for harmonic external loads
Author(s): Chih-Yu Hsu; Lothar Gaul; Chien-Chang Lin
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Paper Abstract

A smart structure system which uses the piezoelectric materials as sensors to identify harmonic external loads and as actuators to suppress the structure vibration is proposed. Signal estimation subprogram and load estimation subprogram use the piezoelectric materials as sensors to estimate the frequencies, amplitudes and phases of the harmonic external loads based on the dynamic responses of structures. After the load estimation procedure, the optimal voltages of actuators are determined by requiring minimization of deflection amplitude of structure. The piezoelectric materials can also be used as actuators to suppress harmonic vibrations of the structure under the estimated external harmonic loads. The method has been applied for beams containing distributed piezoelectric materials. The simulation results validate that the method is effective for suppression of harmonic vibration.

Paper Details

Date Published: 6 June 1997
PDF: 12 pages
Proc. SPIE 3041, Smart Structures and Materials 1997: Smart Structures and Integrated Systems, (6 June 1997); doi: 10.1117/12.275715
Show Author Affiliations
Chih-Yu Hsu, Univ. Stuttgart (Germany)
Lothar Gaul, Univ. Stuttgart (Germany)
Chien-Chang Lin, National Chung Hsing Univ. (Taiwan)


Published in SPIE Proceedings Vol. 3041:
Smart Structures and Materials 1997: Smart Structures and Integrated Systems
Mark E. Regelbrugge, Editor(s)

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