Optimization of diagnostic strategy in non-redundant multi-fault system based on probability threshold

This paper propsoed a multiple fault diagnostic strategy for non-redundant system based on probability threshold.Firstly,it expanded system dependency models,removed fault states which were below probability threshold,and established multiple fault diagnostic models of non-redundant system.Then using entropy algorithm as base algorithm,it presented Rollout algorithm to obtain best test sequence.At last,it built the fault diagnosis tree and calculated test cost.It put forward an airborne electronic system to prove its effectiveness.It can obtain the best test sequence by minimums cost test.