Adaptive Vibration Compensation Control Research on Rotor in Active Magnetic Bearing System

In active bearing system, the synchronous periodic disturbances are mainly caused by the sensor run-out and mass unbalance. The rotational accuracy of rotor is mainly affected by this synchronous disturbance. To improve the rotational accuracy of magnetically levitated rotor, this paper proposed a new approach for simultaneous compensation of periodic disturbances in active magnetic bearings system. A novel adaptive algorithm is developed to determine the harmonic components of both disturbances and guarantee asymptotic stability of the rotor geometric center about the origin based on Lyapunov´s method. The simulation and experimental results have validated the effectiveness of this method.