Study on the Active Vibration Control of Magnetic Bearing System using $H_{\infty}$ Controller

능동 자기 베어링 제어를 위한 $H_{\infty}$ 제어기 설계

Magnetic bearings have been adopted to support the rotor by electromagnetic force without mechanical contact and have many advantages. The application of the magnetic bearings have become more and more widespread in recent years. But magnetic bearings require feedback control for stable operation because they are inherently open loop unstable systems. In this study, H infinity controller has been applied for rotor-magnetic bearing system for vibration control. The result showed that H infinity controller has better performance than PID controller through simulations.