一种冗余系统诊断策略优化设计算法

在冗余系统中，一个测试往往可以检测多个故障的故障单元组合，即故障与测试之间呈现多对一的关系。针对冗余系统故障和测试之间的特殊关系，在前期工作的基础上，提出了一种适用于冗余系统诊断策略优化设计的算法，形成了一个完整的多故障诊断策略的生成方法框架。将此方法应用于某飞机供电系统，可以有效地完成冗余系统故障诊断。

An Optimal Design Algorithm of Redundant System Diagnostic Stategy

In redundant systems, a test may detect a combination of several faults, so the correlativity between faults and tests is a many-to-one mapping. Considering that the failure signature of mutiple failuers was differ- ent from the union of failure signature of individual failuers, based on the former achievements, an algorithm of generating diagnositic strategy for redundant system was presented and an integrated framework for multiple fault diagnosis was formed. The method was applied in power supply system of some aircraft, and the experiment re- suits showed that the strategy was effective.