ABSTRACT

Since the CRH (China Railway High-Speed) trains was put into operation in China, rich service data has been accumulated, including shape data of wheels, the parameter of suspension systems. These parameters are closely related to the safety and comfort of the train. In this article, the evolution law of the dynamic parameters are disclosed, and a dynamic model of the train system, which considers the dynamic parameters as the stochastic process, is created. Finally, the influence of parameters’ change on vehicle dynamic performance are researched.