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使用MATLAB建立了EMS型磁浮列车一节完整车厢的动力学模型,模型描述了车体-悬浮架-弹性轨道之间的关系,并具有4个自由度。仿真分析了车辆以200 km/h速度通过弹性轨道,当悬浮控制器分别采用3种不同的控制算法时车-轨耦合振动的系统动力学行为。仿真结果表明,在一定速度以及固定的车辆-轨道物理参数条件下,悬浮控制器采用不同的控制算法,车体-悬浮架-轨道各自的动力学行为有明显差异,磁浮列车的安全性与舒适性互相矛盾。理想的悬浮控制器算法应该在保证列车安全性的前提下,尽可能提高舒适性,同时通过改良悬浮控制算法可以提高车-轨耦合振动过程中系统的动态性能。此研究对于完善磁浮列车悬浮控制器设计具有参考价值。
The dynamic model of a full carriage of a EMS-type maglev train is established using MATLAB. The model describes the relationship between the body-suspension frame-elastic track and has four degrees of freedom. The dynamic behavior of the vehicle-rail coupling vibration system is analyzed by simulation when the vehicle passes the elastic track at 200 km / h and the suspension controller adopts three different control algorithms respectively. The simulation results show that under certain speed and fixed vehicle-orbit physical parameters, the suspension controller adopts different control algorithms, the dynamic behaviors of the body-suspension frame-orbit are obviously different, the safety and comfort of the maglev train Sexually contradictory. The ideal suspension controller algorithm should improve the comfort as much as possible while ensuring the safety of the train. At the same time, the improved suspension control algorithm can improve the dynamic performance of the system during the vehicle-track coupling vibration. This study has reference value for improving the design of maglev train suspension controller.