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Proceedings Paper

Optimal vibration control of a rotating shearable blade using distributed piezoelectric sensing and actuation
Author(s): Naresh K. Chandiramani; Liviu I. Librescu
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Paper Abstract

A rotating composite blade, modeled as a box-beam that incorporates a number of non-classical effects such as transverse shear traction free boundaries and restrained warping, is considered. The blade consists of host orthotropic (graphite-epoxy laminate) with surface embedded and spanwise distributed transversely isotropic (PZT-4) sensors and actuators. The total current output from all sensors is distributed to the actuators after suitable weighting. A modified Galerkin method that uses only admissible functions is considered, and the optimal control problem is studied via the classical and instantaneous LQR methods. The effect of transverse shear, ply angle, fulfilment of traction free boundary conditions, piezopatch location and size, and weighting matrices in the performance index on the controlled blade-tip response is obtained for various excitations, and pertinent conclusions are outlined.

Paper Details

Date Published: 10 July 2002
PDF: 10 pages
Proc. SPIE 4693, Smart Structures and Materials 2002: Modeling, Signal Processing, and Control, (10 July 2002); doi: 10.1117/12.475241
Show Author Affiliations
Naresh K. Chandiramani, Indian Institute of Technology Guwahati (India)
Liviu I. Librescu, Virginia Polytechnic Institute and State Univ. (United States)

Published in SPIE Proceedings Vol. 4693:
Smart Structures and Materials 2002: Modeling, Signal Processing, and Control
Vittal S. Rao, Editor(s)

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