【摘要】 从系统的角度分析了运载火箭控制系统漏电故障诊断的特殊性 ,提出了故障也是系统要素之间的一种联系方式 ,通过建立部件、征兆、观测和故障等基本概念 ,用图中的节点代表部件 ,边代表部件之间的故障传播关系 ,把系统模型化为图。在此基础上 ,根据信息论的原理给出了诊断算法的设计原则(对分原则 )。通过分析实际操作的可行性和熵函数的特点 ,采用部件权值代替部件熵的方法 ,给出了基于图论模型的诊断问题求解方法。更多还原

【Abstract】 In point of view of the system, the characteristic of leak current fault diagnosis in launch vehicle controlling system is analyzed. It is presented that the fault is a connecting way for sytem factors. By building some basic concepts such as componts, syptoms, observation and faults, the system model is turned into graph, where nodes represent components and edges represent fault transmission among components. Besides,designing rule, that is, bisection rule for diagnosing alglorithm is given based on the information theory. Operating feasibility and entropy function characteristic are analyzed using component trade-off value to substitute component entropy, giving fault problem-solving way based on the drawing model.更多还原