1. Azuma, T., Kanemitsu, Y., Takahashi, N., Fukushima, Y. and Matsushita, O., Magnetic bearing guidebook for rotating machine designers, Japan Industrial Publishing (2004), pp.91-94 (in Japanese).
2. Fan, Q., Nonami, K. and Ueyama, H., Unbalance vibration control of magnetic bearing systems using adaptive algorithm with disturbance frequency estimation, Transactions of the Japan Society of Mechanical Engineers, Series C, Vol.63, No.609 (1997), pp.1448-1454 (in Japanese).
3. Habermann, H., Brunet, M. and Joly, P., Device for compensating synchronous disturbances in the magnetic suspension of a rotor, United States Patent 4121143 (1978b).
4. Habermann, H., Brunet, M. and Joly, P., Device for damping the critical frequencies of a rotor suspended by a radial electromagnetic bearing, United States Patent 4128795 (1978a).
5. Matsui, J., Sirai, K. and Kurokawa, J., Numerical simulation of two dimensional flow in the turbo molecular pump, Transactions of the Japan Society of Mechanical Engineers, Series B, Vol.67, No.661 (2001), pp.2159-2165 (in Japanese).