磁浮列车车-轨耦合自激振动机理及实验研究

项目名称： 磁浮列车车-轨耦合自激振动机理及实验研究

项目编号： No.11302252

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 周丹峰

作者单位： 中国人民解放军国防科学技术大学

项目金额： 28万元

中文摘要： 吸力型磁浮列车依靠电磁吸力抵消自身重力从而悬浮在轨道之上，但在某些情况下，当磁浮列车静止悬浮在某段轨道上时，磁浮列车的电磁铁和轨道会同时出现大幅垂向振动，这种现象被称为磁浮列车的车-轨耦合自激振动。这种振动的振幅往往较大，对轨道和车辆的结构损伤较大，同时会使乘客感到不适。目前国内外对于该问题的研究尚不够完善，车-轨耦合自激振动产生的机理还没有认识清楚；在工程上，车-轨耦合自激振动问题仍未得到很好解决。本项目在现有研究的基础上，以我国自主研发的中低速磁浮列车为研究对象，通过理论建模、有限元仿真以及实验验证等手段，研究磁悬浮列车车-轨耦合自激振动产生的机理，从而为磁悬浮列车商业化线路的修建提供依据。此外，依托实验条件，寻找至少一种抑制车-轨耦合自激振动的方法，为解决当前磁浮列车的耦合自激振动问题提供一种控制策略，同时也为磁浮列车的商业运营提供安全保障。

中文关键词： 磁悬浮；自激振动；稳定性；试验平台；

英文摘要： The electromagnetic levitated (maglev) train utilizes attractive magnetic forces to neutralize its weight, thus the vehicle can be suspended above the guideway with no contact with the guideway. However, in some cases, when the train is suspended above the guideway without moving, the electromagnets of the train, together with the guideway, tend to vibrate in the vertical direction, and this phenomenon is called maglev vehicle-guideway coupled self-excited vibration. Generally, the amplitude of the self-excited vibration is rather large, and it may cause damages to the structure of the vehicle and the guideway, and it also makes the passengers feel uncomfortable. So far, the principle of the self-excited vibration has not yet been well studied; and in practice, the vehicle-guideway coupled self-excited vibration problem has not been solved, either. Based on the current research, taking the medium-low speed maglev train developed in China as the object, this project tries to investigate the principle of the coupled excited vibration via theoretical modeling, finite element analysis, as well as experimental validation, which intends to provide a reference for the construction of commercial maglev lines. In addition, to solve the self-excited vibration problem in the current maglev system, at least one method to su

英文关键词： Maglev；Self-Excited Vibration；Stability；test platform；