518 永久磁石内蔵型ハイブリッド磁気軸受の開発(新しい磁気浮上方式,OS-3:磁気浮上・磁気軸受の制御)

概要

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This paper proposes a new type of Hybrid (HB) magnetic bearings which has permanent magnet (PM) within the stator. It is intended for a magnetic bearing to have high efficiency, good dynamic response and low cost. HB magnetic bearing is recognized as an efficient one. But the bias PMs should be installed between the radial magnetic bearings. It requires thick magnetic circuit and produces flux leakage. Hence a new magnetic bearing is proposed based on the HB type. The bias PMs are installed inside the radial magnetic bearing. Hence all the magnetic circuit is closed inside the radial magnetic bearing and it is relatively free from the flux leakage. This magnetic bearing system is controlled using the hall diode as a position sensor which locates on the top of PMs.
社団法人日本機械学会の論文
2004-09-27