Robust electromagnetic levitation control based on mixed sensitivity

The electromagnetic suspension control system is a complex open-loop unstable system. The system has problems such as unmodeled dynamic characteristics, uncertain external interference, and sensor noise. In order to make the controller designed under the influence of uncertain factors in the system, The system can still keep the system stable. In this paper, a robust electromagnetic levitation control algorithm is designed based on mixed sensitivity. Simulation results show that the algorithm can still maintain the system's expectations in the presence of model uncertainty or external interference Performance.