磁歪材料と圧電材料の積層を用いた磁気力制御素子の静特性評価

概要

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A magnetic force control device using laminate composite of magnetostrictive and piezoelectric materials is proposed. This magnetic force control is based on the inverse magnetostrictive effect, whereby the variation of the magnetization in the magnetostrictive material changed with an applied voltage on the piezoelectric material is converted to that of a magnetic force via magnetic circuit. Due to the capacitive property of the piezoelectric material, the device requires little electric energy to maintain constant force. Furthermore, the device is easy to assemble compared with our proposing conventional device. In this paper, the static characteristics, voltage vs. magnetic force, energy conversion ratio and power consumption are investigated. The calculation of the magnetic force combining a FEM and equivalent magnetic circuit analysis is verified.
2004-05-01