针对目前航电设备故障诊断能力相对较弱的现状,提出一种将粗糙集中的条件熵算法应用于故障诊断的方法,并将该方法应用于实例,结果表明诊断结果准确简化,有助于提高装备可靠性和维修性。 Aiming at the current situation that the avionics equipment fault diagnosis ability is relatively weak, this paper proposes a method to apply the condition entropy algorithm to the fault diagnosis, and applies the method to the examples. The results show that the diagnosis results are accurate and simplified, Equipment reliability and maintainability.