Abstract
This paper proposes one of hybrid vibration suppression methods based on the passive one using piezoelectric elements and a LR circuit. A lot of hybrid methods have been proposed; however, most of them merely use both the active and the passive methods together. In contrast, large controlling force is generated in this method by amplifying the sensed voltage in piezoelectric elements using a sensor and an amplifier. Because the governing equations of the proposed method are also similar to those of the passive method, the optimum values of the circuit can be determined by simple formulations derived by the Two Fixed Points Method. The characteristics of the proposed method were investigated by theoretical analysis, and its effectiveness was verified by the experiment.
