The Lateral Dynamical Analysis of the Magnetic Levitation System

The lateral dynamic character of the maglev system is investigated by constructing the model of it with the lateral tie. To analyze the relationship between vertical stability and lateral displacement of the electromagnet, the dynamic model is linearized at the equilibrium. Runge-Kutta numerical method is employed to obtain the numerical solution of the differential equations. The boundary curves are drawn, which can describe the ability of resisting the external disturbance. When lateral tie has different configuration, corresponding boundary curve is different either. Investigation of the curves shows that the lateral tie affects the system greatly to resist the lateral disturbance; properly configuring the lateral tie can improve the systems lateral robustness. On the maglev vehicle, slipway is installed between air spring and carriage; it allows air spring to glide beneath the car body laterally. The lateral tie can either be fixed on the car body or slipway. The ability to resist disturbance is also discussed here under above two conditions. Analysis of the boundary curve shows that when the lateral tie is configured on the car body, the system has the strongest ability to restrain disturbance.