Research on the influence of track periodic short-wave irregularity on low-speed maglev train

The objective of this study is to investigate the influence of track short wavelength irregularity on low-speed maglev train. First of all, the source of short-wave irregularity is discussed and the model of suspension module for the maglev train is built. Then, for the purpose of research, the train is simulated as a rigid car with 5 independent bogies which each consists two separated suspension modules. In order to find the optimal length and sensitive length of the irregularity wave for the suspension system, the suspension gap and cabin acceleration fluctuation is discussed based on the outputs of the train which is stimulated by different length of short-wave irregularities. For the further analysis, the system performance is discussed with the change of controller parameters and structure of levitation module. The numerical simulation results show that the optimal length is beneficial to the performance of maglev train and is insensitive to the variation of the controller parameters. The conclusions can be taken into consideration for the track manufacture and guideway construction for maglev train.