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Vibration Control of a Plate using a Self-sensing Piezoelectric Actuator and an Adaptive Control Approach

Institute of Fluid Science, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan, qiu{at}ifs.tohoku.ac.jp

Masakazu Haraguchi

Institute of Fluid Science, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan

This article describes the active vibration control of a plate using a self-sensing actuator (SSA) and an adaptive control method. In a self-sensing actuator, the same piezoelectric element functions as both a sensor and an actuator so that the total number of piezoelectric elements required can be reduced. A method to balance the bridge circuit of the SSA was proposed and its effectiveness was confirmed by using an extra piezoelectric sensor, which is not necessary for balancing bridge circuits of SSA in future applications. A control system including the SSA and an adaptive controller using a finite impulse response (FIR) filter and the filtered-X LMS algorithm was established. The experimental results show that the bridge circuit was well balanced and the vibration of the plate was successfully reduced at multiple resonance frequencies below 1.2 kHz.

Key Words: vibration control • self-sensing • piezoelectric actuator • sensor • adaptive control

This version was published on September 1, 2006

Journal of Intelligent Material Systems and Structures, Vol. 17, No. 8-9, 661-669 (2006)
DOI: 10.1177/1045389X06055760


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