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提出了在系统部件和结构模型规范化描述的基础上,对含有分流和汇流结构的负反馈系统故障树自动建造的处理方法。采用此方法,可利用规范化和标准化的元部件模型库,通过拖拽的方式形成系统功能图(即得到系统结构模型),在此基础上,可按任意指定的顶事件状态,实时的自动生成故障树。该方法在混合动力电动汽车系统中的应用,为发现系统可靠性设计的缺陷、进行故障的实时监测诊断和进行控制率的实时切换提供了依据;提供了混合动力电动汽车系统多态故障树自动建造的实例结果,冗余支路少、符合逻辑、结果正确,证明了该方法的正确性;具有通用性,也可用于其他大型复杂系统故障树的自动建造。
Based on the standardized description of system components and structural models, a new method of automatic fault tree construction for negative feedback system with shunt and confluence structure is proposed. Using this method, the standardized and standardized component model library can be used to form a system function diagram (that is, get the system structure model) by dragging and dragging, and based on this, the automatically generated event can be automatically generated in real time according to any designated top event status Fault tree. The application of this method in HEV system provides a basis for discovering the defects of system reliability design, real-time monitoring and fault diagnosis, and real-time switching of control rate. It also provides a multi-state fault tree for hybrid electric vehicle system The results of the construction example, with fewer redundant branches, are logically correct and the result is correct, which proves the correctness of the method. It is universal and can also be used for automatic construction of fault trees of other large complex systems.