The world's first high temperature superconducting(HTS)magnetic levitation (maglev) engineering prototype vehicle and test line were officially put into use at Southwest Jiaotong University, China, on January 13 th , 2021. This event means that HTS maglev has now made the leap in the engineering research. The influence of the suspension parameters on the random vibration of vehicle is an important content in dynamic optimization, which will affect the operation stationarity. In this paper, we investigated the random vibration of HTS maglev prototype by numerical simulation and optimized the suspension parameters to obtain a good operation quality. Firstly, a dynamic model of the HTS maglev engineering vehicle was established based on UM software. Secondly, the influence of suspension parameters and operation speed on vehicle operation stationarity were studied. Finally, simulation results were discussed in detail based on a set of selected suspension parameters. Results show that the suspension parameters and operating speed have obvious effects on the vehicle stationarity, and the reasonable selection of the secondary suspension parameters can ensure the stable operation of the HTS maglev at a maximum speed of 620 km/h.

中文翻译：

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随机振动下高温超导磁悬浮悬架参数优化


2021年1月13日，全球首台高温超导磁悬浮工程样车及试验线在西南交通大学正式投入使用。这一事件意味着高温超导磁浮现已实现跨越式发展。在工程研究中。悬架参数对车辆随机振动的影响是动态优化的重要内容，会影响车辆运行的平稳性。本文通过数值模拟研究了高温超导磁浮样机的随机振动问题，并对悬挂参数进行了优化，以获得良好的运行质量。首先，基于UM软件建立了高温超导磁浮工程车的动力学模型。其次，研究了悬架参数和运行速度对车辆运行平稳性的影响。最后，根据一组选定的悬架参数详细讨论了仿真结果。结果表明，悬架参数和运行速度对车辆平稳性有明显影响，合理选择二悬架参数可以保证高温超导磁浮在最高速度620 km/h下稳定运行。