Vibration control of a smart structure embedded with metal-core piezoelectric fibers

Authors: Takagi, Kiyoshi; Sato, Hiroshi; Saigo, Muneharu

Source: Advanced Composite Materials, Volume 15, Number 4, 2006 , pp. 403-417(15)

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Abstract:

This paper addresses the active vibration control of a new smart board designed by mounting piezoelectric fibers with a metal core on the surface of the CFRP composite. These complex fibers function as sensors and actuators in the CFRP board. A finite-element model of a cantilever and a reduced order model for controller design were established. The piezoelectric fibers are uneven in the actuator outputs. Therefore, a linear fractional transformation (LFT) is formulated considering the unevenness of the actuator outputs as the perturbation. Next, the controller is designed by using μ synthesis, considering the perturbation and robust stability. The control performance of the proposed method is verified by experiment and demonstrates that piezoelectric fibers can be effectively used in vibration control.

Keywords: VIBRATION CONTROL; SMART STRUCTURE; METAL CORE PIEZOELECTRIC FIBER; MU SYNTHESIS

Document Type: Research article

DOI: http://dx.doi.org/10.1163/156855106778835195

Publication date: 2006-10-01