高温超导磁悬浮车辆曲线通过动态特性分析

Analysis of Dynamic Characteristics of High Temperature Superconducting Maglev Vehicle in Curve Passing

为提高高温超导磁悬浮车辆曲线通过性能,针对悬挂系统和高温超导悬浮导向力的非线性特性,建立了高温超导磁悬浮车辆横垂耦合动力学模型,分析了高温超导磁悬浮车辆悬浮架曲线通过性能,对比了车辆通过有无超高曲线时悬浮杜瓦横向和垂向位移。仿真结果表明,车辆在通过有超高曲线时,在缓和曲线路段,原H型构架由于无一系悬挂,难以适应曲线路段的线路扭曲,使得局部杜瓦垂向位移较大。为此,对悬浮架设计方案提出了优化措施,并对优化方案进行仿真分析。结果表明,采用增设橡胶垫等方式可增加H型构架纵梁与横梁之间的点头自由度,以及增设杜瓦与H型构架之间的一系悬挂对改善车辆的曲线通过能力均有效果,并且后者效果更为明显。综合2种优化方案,提出了有利于高温超导磁悬浮车辆曲线通过的悬浮架结构方案。

In order to improve the curve passing performance of HTS(high-temperature superconducting)maglev vehicle,aiming at the nonlinear characteristics of suspension system and high-temperature superconducting levitation and guidance force,the dynamic model of HTS maglev vehicle which coupled lateral and vertical was established.The curve passing performance of suspension frame of HTS maglev vehicle was analyzed,and the lateral and vertical displacement of dewar were compared when the vehicle passed through the curve with or without superelevation.The simulation results show that the original H-frame is difficult to adapt to the line distortion of the transition curve section because there is no primary suspension when the vehicle passeing through the curve with superelevation,which makes some of the vertical displacement of dewar larger.Therefore,the optimization measures were carried out for the design scheme of suspension frame,and the analysis of the optimization scheme was given.The results show that adding rubber pad can increase the nodding freedom between longitudinal and horizontal beam of H-frame.Furthermore,adding primary suspension between dewar and H-frame can improve the curve passing ability of vehicles.In addition,the effect of adding primary suspension is better.A suspension frame structure scheme which is beneficial to the curve passing of HTS maglev vehicle is carried out combining the two optimization schemes.