543 ピエゾ素子を用いた鉄道車両の弾性振動低減 : 特性変化による性能劣化防止に関する検討(信頼性・品質, OS-17 知的材料・構造システム)

概要

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This paper describes the application of piezoelectric elements to suppress the bending vibration of a scale model of railway vehicle. The elements are electrically connected to external shunt circuits. Simple shunt circuits tend to worsen the performance of vibration suppression when vibration characteristics of vehicle or parameters of circuit elements are perturbed. The authors propose a new method to implement the shunt circuit, in which part of impedance is virtually realized. The impedance of the circuit can be easily tuned by software procedures. This method is introduced to make it possible to realize arbitrary shunt circuits, even though the impedance of the circuits are require to have very complicated characteristics, or to be tuned by real-time processing. Excitation tests show that the first mode bending vibration of the scale model can be suppressed successfully by using the proposed shunt circuit. According to the simulation results, it can be expected that the optimized shunt circuit designed based on the robust control theory improves the performance of vibration suppression even if the characteristics of control objects are perturbed.
一般社団法人日本機械学会の論文
2004-09-27