708 ピエゾ素子を用いた鉄道車両の弾性振動低減(新幹線車体 1/5 模型による検討)

概要

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Piezoelectric elements, that are electrically connected to external shunt circuits, are introduced to suppress bending vibration of an scalemodel of a railway vehicle. The authors proposed two types of shunt circuits aiming at practical use. One circuit is equivalent to a inductor and a resistor in series, and the other a negative capacitor and a resistor, and both circuits are designed for use under conditions of large vibration amplitude that causes high voltage generated by the elements. Results of excitation tests show that the first mode bending vibration of the scalemodel can be suppressed successfully. Moreover, the circuit including the negative capacitor can also reduce vibration associated with higher eigen modes. According to the simulation results, it is also expected that this method effectively suppresses vibration in case the elements are attached on the actual vehicle.
社団法人日本機械学会の論文
2003-09-15