圧電素子による永久磁石の運動制御を利用した反発形磁気軸受機構の開発(機械力学,計測,自動制御)

概要

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A magnetic bearing system using forces of repulsion between permanent magnets was developed. In the developed magnetic bearing, the radial motions of the rotor were passively supported by repulsive forces. The motion in the axial direction, which is inherently unstable, was stabilized by using the motion control of the permanent magnets for passive radial suspension with a piezoelectric actuator. The maximum displacement of the actuator was 200 μm. The developed magnetic bearing suspended a rotor without any mechanical contact. Its dynamic characteristics were studied experimentally. It was demonstrated that the rotor could follow stepwise command signal whose magnitude was within ±60 μm when I-PD control was applied.
一般社団法人日本機械学会の論文
2002-10-25