Coupled Faults Analysis and Evaluation M ethods Based on Cellular Automata

The reliability analysis of coupled faults may be difficult due to its properties of multiple and intermittent. The challenge is to find the rule and depict of the cross-linking relationship by mathematical model. The method in this study was developed around the Cellular Automata（ CA） with a novel neighborhood definition and the structure of network model to build the failure cellular automata. And the simulation of the coupled faults influence combined with the importance evaluation method of network node to find the most critical faults which were beneficial to improve the design,without consuming massive computational overhead.     

基于贝叶斯网络的GO法模型算法

GO法是评价具有多状态时序特性的复杂系统可靠性的有效方法,但GO法操作符众多、算法复杂并且缺乏工具软件支持,制约了GO法的工程应用。针对该问题,本文提出一种基于贝叶斯网络的GO法新算法。首先,定义常用操作符到贝叶斯网络节点映射规则;然后,给出GO模型映射转换为贝叶斯网络的可编程流程;最后,利用贝叶斯网络成熟工具支持,定量求解映射后的贝叶斯网络模型。新算法操作符映射规则统一,模型映射转换流程简单直观,便于工程人员掌握和应用。此外,除了能得出传统的定量结果,新算法使得GO法还具有故障推理和诊断能力。