综述国内外故障诊断技术的研究现状,并对该技术在载人航天中的应用情况及存在问题进行了总结。介绍了用于故障诊断的各种方法,分析了不同方法之间的优缺点;并对故障诊断技术的应用领域和发展趋势进行了分析;最后探讨了载人航天器故障诊断的特点,阐述了载人航天故障诊断研究现状以及研究和应用中存在的主要问题。 The current research status of fault diagnosis technology both at home and abroad are summarized, and the application of the technology in manned space flight and its existing problems are summarized. Introduced various methods for fault diagnosis, analyzed the advantages and disadvantages between different methods, and analyzed the application fields and development trends of fault diagnosis techniques. Finally, the characteristics of fault diagnosis for manned spacecraft The status quo of manned spaceflight fault diagnosis and the main problems in research and application.