基于粗糙集的复杂航空电子装备故障诊断

摘要

As avionics is high—tech and complicated equipment, so its fault diagnosis is difficult. To the characteristic of fault diagnosis, this article gives a introduction of the concept of rough concourse, information system and diagnosis process of fault diagnosis based on rough set, and pays attention to the system and reduction of decision —making information. At last, give a explanation that the theory of rough set could be used to diagnose complicated avionics effectively and achieve much compactter and correctter fault diagnosis information through an example of a test of a radar system which gains some parameter and predigests the item of the test with the help of the rough set theory.%航空电子装备是高科技复杂装备,故障诊断的难度较大.本文针对故障诊断领域的特点,介绍了粗糙集的相关概念,重点提出了决策信息系统及其约简,介绍了利用粗糙集进行故障诊断的信息系统及诊断流程.最后以某型雷达系统的整机测试为实例,运用粗糙集理论进行运算,得到一系列的参数,并简化了测试的项目,最后所得的结论说明粗糙集理论有效的用于复杂航空电子装备的故障诊断中,得出更为简洁、准确的故障诊断信息.