关键词: 故障模式, 故障诊断, 现状与趋势, 液压能源系统, 液压伺服系统

Abstract: Based on mechanism analysis of hydraulic power and servo systems, the primary failure modes of hydraulic systems are briefly introduced. According to the key and difficult topics on diagnosis of power and servo subsystems, the theories, the approaches and the developing situation of fault diagnosis technology in recent years are comprehensive analyzed and summed up. By summarizing the advantages, limitations and applicable areas of each method, suggestions and comments are given for further research efforts.

Key words: Current research and developing trends, Failure mode, Fault diagnosis, Hydraulic power systems, Hydraulic servo systems