板磁石を利用した非接触磁気リニア駆動機構の設計開発

（第2報，減速比1/6～1/2における伝達性能に及ぼす中間磁性媒体形状の影響）

抄録

The purpose of this study was clarified optimum shapes and dimension of pole-piece at linear magnetic gear to be obtained the maximum transmission load. The linear magnetic gear composed by two plate magnets unit and ferromagnetic pole piece based on magnetic gear design. Gear ratio of the linear magnetic gear designed at 1/2, 1/3 and 1/6, the gear ratio. The shape of pole piece was designed six various types such as symmetry Box type, I type, Drum type, asymmetry S type, Z type and SZ type, and the width of pole piece was 8mm and 12mm. By the transmission test result, the optimum shape of pole-piece was Drum type, the maximum driven load of Drum-type pole-piece in width 8mm (D8) was 57N, minimum driven load of ZS type in width 8mm (ZS8) was 36N at gear ratio 1/3. When the gear ratio was larger, the driven magnet hardly affected by magnetic flux of pole pieces that change magnetic pole, because the distance between two pole-pieces which change magnetic pole was larger. For the same reason, the optimum width of pole-piece was 8 mm rather than 12mm.