高速磁浮列车电磁铁安装结构的动力学建模与分析

Dynamic Analysis on the Magnet Fixing Structure of the High Speed Maglev Vehicle

电磁铁和悬浮架都是磁浮列车的重要组成部件,它们之间的连接结构对悬浮控制系统影响很大,若连接不善,电磁铁会产生振动,进而导致悬浮控制系统崩溃。为深入研究高速磁浮列车电磁铁的振动机理,本文描述了高速磁浮列车电磁铁和托臂的安装结构并建立电磁铁转动的动力学模型。基于此模型,分析电磁铁的转动规律及电磁铁转动对电磁力的影响,并定性分析叠片弹簧的刚度与电磁铁转动频率之间的关系。探讨电磁铁-托臂连接结构与列车悬浮控制之间的关系,提出了抑制电磁铁转动的方法。

The magnet and chassis are both important components of the maglev train. The juncture between them profoundly influences the suspension control system. If badly designed, the juncture will make the magnet vibrate, even cause the suspension control system corrupt. TO research the vibration mechanism of the maglev train, in this paper, the juncture between the magnetand the bracket of the chassis is presented. Then the dynamic model of the magnet is set up. Based on the model, the roll action of the magnet is analyzed. Accord- ing to the analysis, the relation between the spring stiffness and the magnet roll frequency is achieved, and the result is also got that the magnet roll action affects the electro-magnetic force greatly on certain conditions. Furthermore, the relation between the juncture and the vertical suspension control of the magnet is discussed. Finally, the method to restrain this kind of roll is recommended.