圧電素子を用いた受動制振システムにおける一般化電気機械結合係数の簡易同定手法の提案(機械力学,計測,自動制御)

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  • Simple Identification Method of Generalized Electromechanical Coupling Coefficient for Passive Vibration System via Piezoelectric Element(Mechanical Systems)
  • 圧電素子を用いた受動制振システムにおける一般化電気機械結合係数の簡易同定手法の提案
  • アツデン ソシ オ モチイタ ジュドウ セイシン システム ニ オケル イッパンカ デンキ キカイ ケツゴウ ケイスウ ノ カンイ ドウテイ シュホウ ノ テイアン

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This paper proposes a simple identification system of generalized electromechanical coupling coefficient for passive vibration suppression system by piezoelectric element. The proposed system consists of piezoelectric element, external impedance, voltage source and bridge circuit. Voltage input causes the resonant oscillations of the system and the system yields some resonant frequencies which can be observed from the voltage output of bridge circuit. Applying a formula to the obtained frequencies, the generalized electromechanical coupling coefficient is identified. In the proposed method the method of excitation and measuring of the resonant oscillations are realized by electric and electronic components while the excitation of the conventional method is done by mechanical method. Consequently, the proposed system can be realized in compact and simple configuration and the identification can be realized in simple procedure. Passive vibration suppression system is designed by the use of the parameter which is identified by the proposed method. And experiment of the vibration suppression validates the proposed method.

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