在飞机系统和设备的维修中,故障检测与隔离所需的时间约占维修时间的35％左右。能否迅速准确地进行故障诊断对降低维修费用和战备完好性有着极大的影响。现在飞机所用的自动检测方法的诊断能力不足,虚警率高,不必要的设备拆卸率高达30％～50％,所以,美国在80年代初就开始了综合诊断问题的研究。(见右边综合诊断示意图) In the maintenance of aircraft systems and equipment, the time required for fault detection and isolation accounts for about 35% of maintenance time. The ability to diagnose problems quickly and accurately has a tremendous impact on reducing maintenance costs and readiness for combat readiness. Nowadays, the automatic detection methods used in the aircraft are not capable of diagnosing, the false alarm rate is high, and the unnecessary disassembly rate of equipment is as high as 30% -50%. Therefore, the United States started the study of comprehensive diagnosis in the early 1980s. (See the right synthesis diagnosis diagram)