Vibration Control of Smart Structures with Dynamic Characteristic Variation

This study is concerned with a vibration control strategy for a flexible-link system to achieve effective vibration suppression. It is required that the control system adapts to the dynamic characteristic variation of the system. A smart-link system composed of piezoelectric actuators and gain-scheduled controller is proposed to cope with change of the variable parameters which causes the dynamic characteristic variation of the system. An adaptive control is conducted by scheduling some LTI controllers to keep the stability and performance against the change of the variable parameters. The appropriate actuator location is determined by the target mode shapes. The scheduling gains for the LTI controllers designed at their operating points are optimized to obtain effective vibration suppression of the system.

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