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Adaptive Non-Model-Based Vibration Control of Critical Flexible Modes in Mechatronic Systems

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Author
Pang, Chee Khiang
Dai, Gangquan
Lee, Tong Heng
Nagashima, Masaki
Date
2011
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Abstract
Robust vibration control of critical flexible modes in flexible mechanical structures is crucial for synergistic integration of R&D and manufacturing of modern mechatronic systems. In this paper, an adaptive non-model-based control is implemented to the piezoelectric (PZT) actuated flexible structure for enhanced vibration suppression on critical flexible modes in mechatronic systems. The strain signal of the PZT actuators is extracted by a self-sensing circuit and used in the adaptive feedback term along with a PID control to directly compensate for the vibration of the PZT-actuated flexible structure. The adaptive scheme, which is derived based on a simple energy function, ensures elimination of the control/observer spillover and stability of the closed-loop system. Extensive simulations and experiments have been conducted to evaluate the effectiveness of the adaptive scheme in vibration suppression on the critical flexible modes of the PZT-actuated suspension in a commercial dual-stage hard disk drive. The implementation results show that the adaptive scheme is robust t flexible mode fluctuations, and the vibration suppression performance is greatly improved.
Description
Proceedings of the 18th World Congress The International Federation of Automatic Control Milano (Italy) August 28 - September 2, 2011
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
URI
http://hdl.handle.net/10945/61860
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