Diagnostic Tree Generation Method Based on Global Optimal AO * Algorithm

In order to improve the fault diagnosis efficiency of complex systems and reduce the maintenance cost, this paper proposes a diagnosis tree generation method based on the global optimal AO* algorithm. Based on the establishment of the correlation model between the system fault mode and the test vector, this method comprehensively considers the problems of fault occurrence rate and test cost,and uses AO * algorithm to generate the optimal diagnosis tree, which effectively guides the maintenance personnel to quickly locate the fault.