空气弹簧组件对列车磁悬浮系统的影响

刘恒坤王泉涂俊

Influence of Air Spring Components on Maglev Train System

LIU HengkunWANG QuanTU Jun
摘要:
[目的]为研究作为组件之一的空气弹簧对列车磁悬浮系统的影响,解决磁浮列车磁悬浮系统因空气弹簧的影响而导致的悬浮性能变差的问题,开展了空气弹簧对磁悬浮系统性能影响的机理研究和仿真分析。[方法]首先建立不含空气弹簧的磁悬浮模型,并在此基础上设计控制算法,根据磁悬浮系统的性能指标,设计其最优控制参数;在控制算法和最优控制参数确定之后,再将空气弹簧的影响考虑到磁悬浮系统模型中,以研究空气弹簧的刚度对磁悬浮性能的影响。采用MATLAB软件对磁悬浮系统的性能进行了仿真,仿真过程中,在不改变控制参数时改变空气弹簧的刚度,以观测磁悬浮性能的变化情况;当磁悬浮性能变差时,通过优化控制参数,使得磁悬浮性能保持最优。[结果及结论]仿真结果表明:当空气弹簧的刚度在某一范围内时,刚度越大越不利于磁悬浮系统的稳定;在空气弹簧的刚度增大时,适当增加控制系统的刚度和阻尼会有利于磁悬浮系统的稳定。
Abstracts:
[Objective] To study the influence of air springs on maglev train system as one of the components, and solve the problem of deteriorated suspension performance in maglev train system due to the influence of air springs, the mechanism research and simulation analysis of the above problem are carried out. [Method] First, a maglev model without air springs is built, and based on this, a control algorithm is designed. According to the performance indicators of the maglev system, the optimal control parameters are designed. After determining the control algorithm and optimal control parameters, the influence of air springs is considered in the maglev system model to study the influence of air spring stiffness on maglev suspension performance. The performance of the maglev system is simulated using MATLAB software. During the simulation process, the air spring stiffness is changed without changing the control parameters, and the changes in maglev suspension performance are observed. When the maglev suspension performance deteriorates, the optimal suspension performance is maintained through optimizing control parameters. [Result & Conclusion] Simulation results show that the air spring stiffness is within a certain range, and the greater the stiffness, the less conducive to the maglev system stability. When the air spring stiffness increases, increasing the stiffness and damping of the control system appropriately is beneficial for the stability of the maglev system.
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