It mainly focuses on the research of load identification and damage identification (crack identification) and structural health monitoring (SHM) technology of key components of vehicles. At present, the main research content is real-time status recognition of wheel-rail force based on vibration response data; real-time monitoring of wheel tread damage, track tread damage, and wheel-rail fatigue contact cracks; load identification and damage identification of composite materials for vibration and noise reduction; rail vehicles Key technologies of remote crack monitoring robots; development of new recognition algorithms for vehicle PHM technology, etc.