Abstract:The structure of a kind of electro magnetic suspension(EMS) maglev train based on v shaped guideway is proposed, and this study focuses on its suspension and guidance technologies. In this structure, suspension, guidance and propulsion are realized by a single set of magnets on the vehicle and the long stator coils on the guideway, which promises the simplicity of structure when compared with existing maglev trains. Firstly, the dynamical model of the plane motion for the maglev train is established. By analysis, it is concluded that the open loop system composed of suspension, guidance and roll motion is unstable but controllable. Secondly, the control strategy that suspension controller as well as guidance rolling controller should be designed separately is designed, based on the conclusion that the suspension motion is independent, while the guidance and roll motion are coupled. Finally, a feedback controller is designed according to the proposed control algorithm as an example. The simulation results indicate that suspension, guidance and roll motions can be effectively stabilized under the proposed controller, which validates the feasibility of realizing suspension, guidance and propulsion by a single set of magnets on the vehicle based on the v shaped guideway.
