磁悬浮列车磁浮力的计算与分析

Calculation and Analysis of Magnetic Suspension Force of Maglev Trains

磁悬浮交通系统具有速度域宽、噪声小、环保节能、无接触悬浮与导向等特性,受到较为广泛的关注与研究。在磁浮列车-桥梁耦合系统动力学问题中,作为桥梁与磁浮列车之间的相互作用力,磁浮力是引起磁浮列车-桥梁耦合系统振动最根本的激励源,对其进行准确的计算与分析及其重要。简要阐述常导电磁悬浮、电动磁悬浮、高温超导磁悬浮的悬浮特点与基本原理,综述3种磁悬浮模式下磁浮力的计算公式,分析不同磁悬浮原理的优缺点及其适用情况。研究结果可为不同制式下磁浮列车-桥梁耦合系统中磁浮力的确定提供一定的参考。

The maglev transportation system has received extensive attention and research with its characteristics of wide speed domain,low noise,environmental protection and energy saving,non-contact suspension and guidance.In the dynamics of the maglev train-bridge coupling systems,maglev force,the interaction force between the bridge and the maglev train,is the most fundamental excitation source for the vibration of the maglev train-bridge coupling system.It is extremely important to calculate and analyze the force in an accurate way.Through literature analysis and refinement,the levitation characteristics and the basic principles of the electromagnetic suspension,the electrodynamic suspension,and the high-temperature superconducting suspension were described briefly.A summary was given on the formulas of the maglev forces under the three levitation modes and an analysis was conducted on their respective advantages,disadvantages and applicable situations.The research result can provide certain reference values for the determination of the maglev forces in the maglev train-bridge coupling system under different maglev systems.