A control method and apparatus for suppressing the vibration components of a magnetic bearing. According to this invention, a vibration wave is sampled at pulses synchronized with the rotation of a rotor, the vibration waveform sampled values at each revolution are averaged, and only the frequency components...http://www.google.com/patents/US5256952?utm_source=gb-gplus-sharePatent US5256952 - Magnetic bearing control method and apparatus
