复杂系统模糊概率故障图模型研究  

Research on Fault Graph Model of Complex System Based on Fuzzy Probability

作　　者：韩光臣[1] 孙树栋[1] 王军强[1] 蔡志强[1] 

机构地区：[1]西北工业大学,西安710072

出　　处：《中国机械工程》2005年第9期801-804,共4页China Mechanical Engineering

基　　金：国家 863 高技术研究发展计划资助项目(2003AA411110);国防基础科研项目(2004771-K1804020511)

摘　　要：建立了一种描述复杂系统故障关联关系的模型,即模糊概率故障图模型。该模型利用图论理论和面向对象建模思想,将复杂系统故障关联关系抽象为一个由三元组描述的有向图,引入故障模糊状态和故障概率信息,体现了故障关系随系统或部件工作状态而变化的特性。给出了模糊概率故障图模型的对象类定义、层次分解方法及模型特性。通过模型在复杂机电设备系统故障诊断中的实际应用说明了它的适用性。A model was presented to describe the fault relation of complex systems, the model abstracted a complex system as a directed graph that was described by ternary combination, using graph theory and object-oriented method. The model introduced fuzzy state and probability information of faults, which depicted the characteristics that the fault dependence relation was variational along with the state of system or parts. The definition of object classes, layer decomposition method and characteristics of the model were depicted. Finally, the applications in fault diagnosis of complex machinery and electronic systems are used to validate the applicability of the model.

关 键 词：模糊概率 图模型 复杂系统 面向对象建模 系统故障诊断 关联关系 图论理论 故障概率 模糊状态 工作状态 模型特性 分解方法 机电设备 有向图 三元组 类定义 适用性 

分 类 号：O159[理学—数学] TP301.6[理学—基础数学]