在详细介绍了基于信息融合技术故障诊断的基本思想、研究现状及最新研究成果基础上,对现有的融合诊断方法和应用实例进行了分析,其中重点讨论了集成故障诊断方法,提出了一种基于多传感器信息融合集成故障诊断框架,给出了故障诊断组成结构和各级的融合功能,最后探讨了信息融合技术在故障诊断应用研究中的主要问题及今后的发展方向. Based on the detailed introduction of the basic ideas, research status and the latest research results based on fault diagnosis of information fusion technology, the existing fusion diagnosis methods and application examples are analyzed. The integrated fault diagnosis method is mainly discussed, and a Based on the multi-sensor information fusion integrated fault diagnosis framework, the fault diagnosis compositional structure and the fusion function at all levels are given. Finally, the main problems and future directions of the application of information fusion in fault diagnosis are discussed.