Application of H_∞ robust fuzzy control in the magnetic levitation suspension system

Based on the physical structure and the nonlinear of the magnetic levitation suspension system,a nonlinear mathematical model is set up,and then presented in a linear one based on the approximation linear theory.Under the optimization robust control condition,a H∞ robust fuzzy controller is proposed with the singleton fuzzification theory,product fuzzy reasoning and center-average defuzzification.The simulation results indicate that the controller is effective.