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Appl. Sci. 2017, 7(3), 240; doi:10.3390/app7030240

Active Vibration Suppression of a Motor-Driven Piezoelectric Smart Structure Using Adaptive Fuzzy Sliding Mode Control and Repetitive Control

Department of Mechanical Engineering, National Taiwan University of Science and Technology, No. 43, Keelung Rd., Sec. 4, Taipei 106, Taiwan
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Author to whom correspondence should be addressed.
Academic Editors: Gangbing Song, Steve C.S. Cai and Hong-Nan Li
Received: 28 December 2016 / Revised: 10 February 2017 / Accepted: 28 February 2017 / Published: 4 March 2017
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Abstract

In this paper, we report on the use of piezoelectric sensors and actuators for the active suppression of vibrations associated with the motor-driven rotation of thin flexible plate held vertically. Motor-driven flexible structures are multi-input multi-output systems. The design of active vibration-suppression controllers for these systems is far more challenging than for flexible structures with a fixed end, due to the effects of coupling and nonlinear vibration behavior generated in structures with poor damping. To simplify the design of the controller and achieve satisfactory vibration suppression, we treated the coupling of vibrations caused by the rotary motion of the thin flexible plate as external disturbances and system uncertainties. We employed an adaptive fuzzy sliding mode control algorithm in the design of a single-input–single-output controller for the suppression of vibrations using piezoelectric sensors and actuators. We also used a repetitive control system to reduce periodic vibrations associated with the repetitive motions induced by the motor. Experimental results demonstrate that the hybrid intelligent control approach proposed in this study can suppress complex vibrations caused by modal excitation, coupling effects, and periodic external disturbances. View Full-Text
Keywords: flexible structure; piezoelectric materials; active vibration control; adaptive fuzzy sliding mode control; repetitive control flexible structure; piezoelectric materials; active vibration control; adaptive fuzzy sliding mode control; repetitive control
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Lin, C.-Y.; Jheng, H.-W. Active Vibration Suppression of a Motor-Driven Piezoelectric Smart Structure Using Adaptive Fuzzy Sliding Mode Control and Repetitive Control. Appl. Sci. 2017, 7, 240.

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