Parameters self-turning fuzzy control for controllable excitation linear synchronous motor magnetic suspension system

This paper presents parameters self-turning fuzzy control of magnetic levitation system of controllable excitation linear synchronous motor(CELSM) magnetic suspension feeding platform. Magnetic suspension feeding platform has the characteristics of direct drive and magnetic suspension, which meet requirements of high speed, high positioning precision. Magnetic levitation system is an important subsystem of feeding platform, which is highly nonlinear, inherently unstable, time-varying and highly dependant on initial condition. In view of the above phenomena, the main pole field directional control mode is used to minimize the impact of magnetic coupling phenomenon of CELSM on the suspension system. In the normal force, the electromagnetic force generated by the interaction between the field excitation and the mover core is taken as controllable force, and the other parts are treated as disturbances of the suspension system. A parameters self-turning fuzzy controller is designed to control maglev system. Simulation results reveal that the proposed control scheme meets the performance requirements.