REVIEW OF RESEARCH ON KEY TECHNOLOGIES FOR HIGH-SPEED TRAIN WHEEL-RAIL CONDITION MONITORING

In the context of the increasing speed of high-speed trains, the safe and comfortable operation depends on the wheel-rail condition monitoring. First, this paper introduces the analysis of wheel-rail adhesion behavior from the aspects of rolling contact model and adhesion and wear. Second, this paper summarizes the research results related to the perception of wheel-rail condition information in recent years from the perspectives of wheel-rail force measurement and wheel-rail damage detection. Third, it focuses on the current situation of wheel-rail dynamic damage diagnosis and discusses the microdamage diagnosis around deep learning. Finally, the development trend of wheel-rail condition monitoring is stated from the perspectives of multicoupling wheel-rail dynamic contact system modeling, highly precise wheel-rail condition information perception, and wheel-rail dynamic microdamage diagnosis based on small sample.