Abstract
This paper describes a new hybrid vibration suppression technique for flexible structures using piezoelectric elements. There are two main methods to suppress vibration of flexible structures. One is active vibration control and the other is passive vibration suppression. The former is effective but has stability problems. While the latter avoids such instability, its controlling force is small. Hence, this paper proposes a new hybrid control composed of inductance, resistance and amplifier that is stable and effective. The optimum values of inductance and resistance used in the circuit can be determined by a simple formulation derived by the two fixed points method. This method is verified by experiments. The results demonstrate that the hybrid control is more effective than passive vibration suppression.
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