Suspension Parameters Optimization of HTS Maglev Under Random Vibration

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.