Development of Five-Axis Active Controlled Axial-Flux Self-Bearing Motor using Unipolar Magnetic Field

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  • 単極磁界を用いた5軸能動位置制御型アキシャルフラックスセルフベアリングモータの開発

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<p>　This paper introduces a five-axis active-controlled axial-flux self-bearing motor that uses unipolar and four-pole magnetic fields to control radial force and tilt moment of the two-pole permanent magnet rotor. The proposed method controls the only one-axis radial force and tilt moment by a unit of the rotor and stator, therefore two units are necessary for radial motion control. The stators can be placed on the double-side and single-side of the rotor. In this paper, the principle of the proposed motor is introduced, and the radial force and tilt moment are analyzed theoretically. Then two experimental devices with double-side and single-side stators are made and levitation and rotation tests are carried out. The results confirm that the proposed motor achieved stable rotation up to 900 rpm in a double-side stator and 440 rpm in a single-side stator.</p>

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