针对目前机载电子设备故障诊断中多条件属性多决策属性的复杂问题,提出基于区间值的变精度双论域粗糙集的机载电子设备故障诊断方法.利用常规关系的变精度双论域粗糙集求得研究对象的双论域正域、可能域、负域和边界域,得到2条确定性诊断规则和可能性诊断规则,并以某型机载话音数字保密机为例进行实例验证.验证结果表明:该方法的诊断规则有效,能为机载电子设备最终的决策诊断提供有力证据.%Aimed at the complex problem of multi-condition attribution and multi-decision attribution in current airborne electronic equipment fault diagnosis, put forward the airborne electronic equipment fault diagnosis method with varied precision dual domain rough set based on interval value. Used varied precision dual domain rough set of conventional relation to acquire dual domain positive region, probability region, negative region and boundary region of research target, then got 2 certainty diagnosis principle and probability diagnosis principle. And used certain type airborne voice digital encryption equipment as example to carry out verification. The verification results show that the method's diagnosis principle is useful, it can provides strong evidence for final decision-making diagnosis of airborne electronic equipment.
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