Integral Backstepping and Lyapunov Calm Control Design for Magnetic Levitation System

Aiming at the problem of maglev train passing through the track joints, this paper proposes a Lyapunov-based backstepping controller for Magnetic Levitation System. First, the theoretical model of the maglev system is, and then, the theoretical formulae of the backstepping controller is deduced; to achieve rapid current response, a current loop feedback is designed. Second, a numerical simulation is carried out, and the simulation results show that the backstepping controller is not only simpler in design, but also faster in response. Finally, the designed controller is verified by experiments in the existing maglev system. The experimental results show that compared with the traditional PID controller, the backstepping method has a smaller overshoot and a faster response speed when dealing with the problem of a maglev train passing through the track joints. Also, it is more adaptable to external disturbances.