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Proceedings Paper

Piezoelectromechanical structures: new trends toward multimodal passive vibration control
Author(s): Francesco dell'lsola; Edmund G. Henneke; Maurizio Porfiri
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Paper Abstract

An intelligent control system has the ability to learn about its environment, process the information to reduce uncertainty, plan, generate and execute actions to either control or reduce to a minimum the undesired motion of all or some of its parts. It generally incorporates sensors, actuators, a controller and a power supply unit. Most of the previous work has focused on active control in which electric power is supplied to the actuators that exert actions on the host structure to suppress its vibrations. Alternatively, undesired mechanical energy of a host structure could be converted into electrical energy that can be dissipated through a set of resistor. This does not require an external power unit and is a more economical means of controlling vibrations of a structure, but an effective transduction of mechanical energy into electric energy has to be guaranteed. Such an effective transduction can be achieved imposing to the electric controller to be resonant at all the mechanical resonance frequencies, and to mimic all the mechanical modal shapes, i.e. to be the analog of the host structure. In this paper we synthesize a completely passive electric circuit analog to an Euler beam, aimed for distributed vibration control.

Paper Details

Date Published: 31 July 2003
PDF: 11 pages
Proc. SPIE 5052, Smart Structures and Materials 2003: Damping and Isolation, (31 July 2003); doi: 10.1117/12.483803
Show Author Affiliations
Francesco dell'lsola, Univ. degli Studi di Roma La Sapienza (Italy)
Edmund G. Henneke, Virginia Polytechnic Institute and State Univ. (United States)
Maurizio Porfiri, Univ. degli Studi di Roma La Sapienza (Italy)

Published in SPIE Proceedings Vol. 5052:
Smart Structures and Materials 2003: Damping and Isolation
Gregory S. Agnes; Kon-Well Wang, Editor(s)

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