Yang S J. Low-noise electrical motor[M]. Oxford：Clarendon Press, 1981.
[2]
Ishibashi F, Noda S, Mochizuki M. Numerical simulation of electromagnetic vibration of small motors[J]. IEE Proceedings of Electric Power Applica- tions, 1998, 145 (6): 528-534.
[3]
Huang S, Aydin M, Lipo T A. Electromagnetic vibration and noise assessment for surface mounted PM machines[C]. Proceedings of IEEE Power Engineering Society Summer Meeting, 2001, 3: 1417-1426.
[4]
Zhu Z Q, Dahaman Ishak, David Howe, et al. Unbalanced magnetic force in permanent-magnet brushless machines with diametrically asymmetric phase windings[J]. IEEE Transactions on Industry Applications, 2007, 43(6): 1544-1553.
[5]
Wang J, Xia Z P, Long S A, et al. Radial force density and vibration characteristics of modular permanent magnet brushless AC machine[J]. IEE Proceedings on Electric Power Applications, 2006, 153(6): 793-801.
[6]
Jacek F Gieras, Chong Wang, Joseph Cho Lai. Noise of polyphase electric motors[M]. Boca Raton: CRC Press, 2006．
[7]
Chen Y S, Zhu Z Q, Howe D. Vibration of PM brushless machines having a fractional number of slots per pole[J]. IEEE Transactions on Magnetics, 2006, 42(10): 3395-3397.
