Model and control law of CMG active magnetic bearing rotor

The model of active magnetic bearing (AMB) rotor control system in industry can not manifest the gyro effect in CMG, so that it is inconvenient to design the control law against the rotor vortex. A system model based on the rotor translation and rotation is introduced, and the gyro effect is clearly reflected. The backward vortexes under different methods of AMB control including the decentralized control and the cross-feedback control are analysed. The concept of modal decouple control is put forward, and the backward vortex of rotor can be diminished at the original offset situation and a better stability is achieved under this control law.