Experimental Evaluation of Gain Scheduled H-inf Robust Controllers to Magnetic Bearing

This paper deals with the problem of an unbalance vibration of the Magnetic Bearing system. We design a control system achieving the elimination of the unbalance vibration, using a Loop Shaping Design Procedure (LSDP). After the introduction of our experimental setup, a mathematical model of the magnetic bearing is shown. Then, the gain scheduled H 00 robust controllers with free parameter are designed, based on the LSDP, so as to reject the disturbances caused by unbalance on the rotor asymptotically even if the rotational speed of the rotor varies. Finally, several experimental results show the effectiveness of this proposed methodology.