Experimental and numerical investigations of negotiation capability of EMS high-speed maglev train on sharp curve

Abstract

To improve EMS high-speed maglev vehicle adaptability to diverse terrains, curve negotiation performance on sharp-radius tracks requires thorough investigation. Previous research has not adequately characterized the dynamic performance of these vehicles under such conditions. This study first conducts dynamic testing at discrete speed levels on Tongji University’s maglev test line to identify guidance performance characteristics on a sharp curve. Experimental data subsequently validate the reliability of the co-simulation model. Then, the comprehensive responses of the full-vehicle are analyzed. Finally, a parametric study is performed, and the optimal parameter combination is selected. Key findings demonstrate that guidance offset exhibits speed invariance on a sharp curve. However, the outermost control current of the end guidance electromagnet increases proportionally with vehicle speed at approximately 3.5% per 10 km/h increment. Additionally, proportional feedback in the guidance control system exerts greater influence on curve negotiation performance than other examined parameters. It is also noted that excessive secondary bumpstop clearance significantly degrades ride quality during negotiation of sharp curves.