B14 圧電素子を用いたハイブリッド多重動吸振器の設計(OS12-2 スマート構造/制振)

概要

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This paper describes a hybrid multi dynamic absorber using piezoelectric elements and an analogue circuit. There are some passive methods to suppress the vibration of flexible structures using piezoelectric elements, however, most of them can suppress only one vibrational mode although flexible structures have some vibrational modes even in low frequency domain. It is true that there are some methods to suppress some vibrational modes using multiple degree of freedom circuit, however, they have problems in the performance and it is complicated to design the circuit. Hence, this paper proposes a new method which solves those problems using an analogue circuit as in previous methods. The optimum values of each element of the circuit are determined by a simple formulation derived by the two fixed points method. Its performance and effectiveness are verified by the experiment.
2005-08-22