结合贝叶斯理论的飞控系统故障树诊断方法

Fault tree diagnosis method in flight control system combined with Bayesian

由于飞行器地勤维修的复杂性,在维修中容易造成地勤人员排故过程的盲目和低效,提出一种基于故障树理论知识的模糊故障诊断专家系统。利用贝叶斯理论修改模糊关系算式以获得定量运算关系,并且给出了决策步骤。应用飞行控制系统实例进行仿真验证,得到了满意的结果。

The complexity of aircraft ground maintenance always causes the blindness and low efficiency of ground crew during the debug process in flight service. For solving this problem, a method of the fuzzy fault diagnosis expert system based on fault tree theory was proposed. By using Bayes＇ theorem to modify fuzzy relation formula, the quantitative relation equation was got and the decision-making step was given. Through the simulation, a flight control example was given and satisfying results were got.