低速磁浮车辆导向方式及其横向动态特性

Guidance Mode and Dynamic Lateral Characteristics of Low-speed Maglev Vehicle

为了获得低速磁浮车辆导向设计的基本参数和设计原则,开展了磁铁模块导向性能的静态分析与动态仿真研究。对不同导向方式下磁铁模块导向力、导向刚度以及垂向和横向力耦合度的大小进行比对分析,结果表明:在被动导向方式下采用磁铁横向对中布置和在主动导向方式下采用磁铁横向错位布置可以得到良好的车辆导向性能,而且后者更优;横向位移及其速度反馈主动导向可显著增加导向力和导向刚度,极大地改善模块动态导向性能,基本实现模块垂向和横向力解耦。建议低速磁浮车辆采用磁铁横向错位布置和横向位移与速度反馈主动导向方式。

In order to obtain the basic data and guidelines for the guidance design of the low-speed maglev vehicle, this paper analyzes the static guidance characteristics of the magnet module and simulates its dynamic lateral responses. By comparing the guidance force, the guidance stiffness and the coupling degree between the vertical force and lateral force of the electromagnet module adopting various guidance modes, it is concluded that the guidance characteristics of the lateral-centered electromagnets with passive guidance mode and the lateral-offset electromagnets with active guidance mode have better guidance performances, and that the latter have preferable guidance characteristics. The active guidance mode using the lateral displacement and vdocity feedback can remarkably increase the guidance force and guidance stiffness, improve the lateral dynamic performances and decouple ultimately the interaction between the vertical and lateral force. It is suggested that the low-speed maglev vehicle should adopt the lateral-offset magnets and the active guidance mode using the lateral displacement and velocity feedback.