“…The safe and reliable operation of equipment is highly dependent on healthy performance; however, equipment will gradually age during operation, which in turn will lead to reduced performance or even failure, further causing system downtime or even catastrophic accidents. Modern equipment such as high-speed trains [ 1 ], missile weapons [ 2 , 3 ], industrial robots [ 4 , 5 ], petrochemical equipment, and other modern equipment are gradually becoming larger, more diversified, and integrated at the same time as their functions continue to improve. The service process is affected by variable environment, variable load, variable working conditions, large disturbances, and strong impact; the overall and key components performance will inevitably degrade; once the equipment performance degradation is caused by the final failure, it will cause huge casualties and property damage.…”