Parameter Estimation of Piezoelectric Elements Only Based on Impedance Measurement and Its Application to Passive Damping(Mechanical Systems)

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  • インピーダンス計測のみに基づく圧電素子のパラメータ推定と受動制振への応用(機械力学,計測,自動制御)
  • インピーダンス計測のみに基づく圧電素子のパラメータ推定と受動制振への応用
  • インピーダンス ケイソク ノミ ニ モトズク アツデン ソシ ノ パラメータ スイテイ ト ジュドウ セイシン エノ オウヨウ

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Abstract

This paper discusses a parameter estimation method of piezoelectric elements aiming at piezoelectric shunt damping. The proposed method only requires electrical impedance measurements. The introduced impedance model, which consists of multiple vibration modes, indicates that the capacitance varies depending on the choice of the target mode. Two kinds of frequency-domain estimation methods, linear and nonlinear least squares methods, are proposed. The experimental results show the effectiveness of the proposed method and the validity of the estimated parameters.

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