Optimal vibration control of a rotating shearable blade using distributed piezoelectric sensing and actuation

Naresh K. Chandiramani; Liviu I. Librescu

doi:10.1117/12.475241

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10 July 2002 Optimal vibration control of a rotating shearable blade using distributed piezoelectric sensing and actuation

Naresh K. Chandiramani, Liviu I. Librescu

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Proceedings Volume 4693, Smart Structures and Materials 2002: Modeling, Signal Processing, and Control; (2002) https://doi.org/10.1117/12.475241
Event: SPIE's 9th Annual International Symposium on Smart Structures and Materials, 2002, San Diego, California, United States

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.

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Naresh K. Chandiramani and Liviu I. Librescu "Optimal vibration control of a rotating shearable blade using distributed piezoelectric sensing and actuation", Proc. SPIE 4693, Smart Structures and Materials 2002: Modeling, Signal Processing, and Control, (10 July 2002); https://doi.org/10.1117/12.475241

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