复合故障诊断技术综述

Review of multiple fault diagnosis methods

复合故障诊断是故障诊断技术中的难点问题,因为实际工程和复杂系统中多个故障经常存在.本文对复合故障的故障机理、表现形式、诊断思路进行了概述.将故障模式识别存在多输出可能性的求解问题定义为复合故障诊断的科学问题.分析了复合故障诊断的难点.讨论了复合故障的研究现状,按照基于解析模型、基于定性经验、数据驱动的分类方式分别对现有的典型诊断方法和相关技术进行了综述,指出了这些方法的适用范围和优缺点.并探讨了复合故障诊断技术的发展方向.

Multiple fault diagnosis（MFD） is a key issue in fault diagnosis technology,because multiple fault commonly exists in engineering and complex systems.We give a survey on fault mechanism,manifestation of symptoms,and approach thinking for MFD.Problem-solving on possible multiple output in fault mode identification is defined as a scientific problem of MFD.Difficulties for MFD is analyzed,and the research status of MFD is discussed.Meanwhile,all typical diagnosis methods and relevant technologies in the discussion are classified into three categories,i.e.,analytical model-based approaches,qualitative knowledge-based approaches,and data-driven-based approaches.Advantages,disadvantages,and scopes of these methods and technologies are separately listed;research directions for MFD are mentioned.