A Review of Fault Diagnosis Methods for Key Systems of the High-Speed Train

High-speed train is a large-scale electromechanical coupling equipment with complex structure, where the interlaced between various system components, and excitation sources are diverse. Therefore, reliability has become top priority for safe operation of high-speed trains. As operating mileage trains increases, key systems experience degrees performance degradation damage failures. Moreover, it accompanied by influence external environmental high interference noise weak early fault information. Thus, those factors serious challenges condition monitoring diagnosis this paper summarizes research progress theoretical results detection, isolation, methods Finally, applicability main methods, discusses opportunities trains, looks forward to improving its level.