Analysis on the Dynamic Response of an EDS Maglev Train Based on Pacejka Similarity Tire Model

Abstract

To research into the key technologies of the super-conducting electro-dynamic suspension (EDS) maglev train, an experimental system which contains all the key elements including a 200-meter test-bed, a propulsion power supply system, an operation control system, a data collecting system and a prototype of a maglev train is established. In this study, we mainly focus on the stability of the train during the accelerating maneuver and analyze the dynamic response of the train through simulation. In this paper, a dynamic model of an EDS maglev train is established in Simpack to analyze the influences of various aspects on the stability of the train during the accelerating maneuver. Specifically, we analyzed the influences of the railway irregularity and vertical tire stiffness on the lateral displacement and acceleration based on the Pacejka Similarity tire model. The simulation results demonstrates that the lateral displacement and acceleration decrease as the railway irregularity or tire vertical stiffness decrease, which means that reducing irregularity or the tire stiffness helps to improve the stability of the train. This conclusion provides effective theoretical guidance to the design of the railway and tire of an EDS maglev train.