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在复杂航空电子装备的故障诊断中,经常存在某项测试信息丢失或不确定的情况。针对该问题,建立了复杂航空电子装备的测试信息不完备故障诊断信息系统,利用最大分布约简集获得不完备测试信息的最优选择;针对最优选择的不唯一性,提出一种改进的不完备测试信息最优选取方法。以某型雷达系统的不完备测试信息系统的诊断规则提取为例,验证了该方法的有效性,表明使用该方法可提高在测试信息不完备条件下对复杂电子装备实施故障诊断的效率。
In the complex avionics fault diagnosis, there is often a test information is lost or uncertain situation. In view of this problem, an incomplete fault diagnosis information system for testing information of complex avionics is set up, and the optimal choice of incomplete test information is obtained by using the maximum distribution reduction set. For the non-uniqueness of optimal choice, an improved Incomplete test information optimal selection method. Taking the extraction of the diagnostic rules of the incomplete test information system of a certain type of radar system as an example, the validity of the method is verified. It shows that this method can improve the efficiency of fault diagnosis of complex electronic equipment under the condition of incomplete test information.