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EMS(electric-magnetic suspension)型磁悬浮列车在上坡和下坡过程中,由于轨道曲线快速变化,在磁浮试验线中反复出现车辆砸轨现象,对磁浮系统的安全性、舒适性造成很大影响.针对这一问题,本文建立了磁浮车—轨道系统的动力学模型,理论分析了轨道坡度、传感器安装位置、车辆速度、车辆质量在磁浮列车通过轨道变坡点时对于稳定性的影响,推导了轨道坡度—车辆各主要参数和稳定性之间的关系表达式.数值仿真验证了稳定性条件的有效性,该结论对于磁浮车辆和轨道系统设计具有参考意义.
During the course of uphill and downhill, maglev train with EMS (Electromagnetic-Magnetic Suspension) has the phenomenon that the vehicle hit the track repeatedly in the maglev test line due to the rapid change of the track curve, which greatly affects the safety and comfort of the maglev system In response to this problem, this paper established a dynamic model of maglev vehicle-track system, and analyzed the influence of track gradient, sensor installation position, vehicle speed and vehicle mass on the stability of maglev train passing the track change point The relationship between the grade of the track and the main parameters of the vehicle and the stability is verified by numerical simulation.The validity of the stability condition is validated by the numerical simulation.The conclusion is of great significance for the design of the maglev vehicle and the track system.