1. (3) A. Toba, T. Watanabe, H. Ohsawa, and Y. Koganei: “Design and Experimental Evaluations of 5kW-Surface Permanent Magnet Vernier Machines”, T. IEE Japan, Vol. 122-D, No. 2, pp. 162-168 (2002-2) (in Japanese)
2. (4) Y. Enomoto, M. Kitamura, T. Sakai, and K. Ohara: “Factor Analysis on Cogging Torque in Segment Core Motors”, IEEJ Trans. IA, Vol. 124-D, No. 1, pp. 85-90 (2004-1) (in Japanese)
3. (5) C. Kaido, J. Yamasaki, S. Kaneko, T. Hashimoto, T. Kimura, Y. Shishido, K. Hanzawa, T. Sadamasa, S. Kanao, and T. Uemura: “Study on Manufacturing Deterioration in Torque Charactreristics of Small Motor”, The Papers of Technical Meeting on Rotating Machinery, IEE Japan, RM-05-62 (2005) (in Japanese)
4. (6) M. Natsumeda and H. Takabayashi: “The calculation method of cogging torque considered the variation of the magnet”, The 2004 National Convention Record, IEE Japan, No. 5-094 (2004) (in Japanese)
5. (7) M. Natsumeda and H. Takabayashi: “The Relation between Electromagnetic Combination and Cogging Torque of Permanent Magnet Synchronous Motor”, The 2004 National Convention Record, IEE Japan, No. 5-107 (2005) (in Japanese)