Abstract：Combining with R&D of a new levitation frame of EMS high-speed maglev, a maglev vehicle dynamic model including non-linear air-spring models and active electromagnetic controllers was established. With this model, dynamic responses of a maglev vehicle negotiating a small-radius vertical curved track at lower speed were simulated, and the results were compared to those adopting linear equivalent air-spring models. Results showed that there is no big difference between dynamic responses of car-body and electromagnet with linear equivalent air-spring models and non-linear air-spring ones, but the calculated expansion-contraction amount of linear equivalent air-spring model is significantly less than that of non-linear air-spring one; variation laws of vehicle unilateral 8 air springs’ vertical expansion-contraction deformation, rubber air bag inner pressure and vertical force conform to linear relationship; the simulation results based on nonlinear air-spring models can provide a basis for the design of secondary suspension system of high-speed maglev.
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