supported by National Natural Science Foundation of China (Grant No. 50437010);National Hi-tech Research and Development Program of China (863 Program,Grant No. 2006AA05Z205);Fund of Aeronautics Science of China (Grant No. 2008ZB52018)
As the dynamic stiffness of radial magnetic bearings is not big enough, when the rotor spins at high speed, unbalance displacement vibration phenomenon will be produced. The most effective way for reducing the displac...