摘要
为提高DCS系统的安全性和可靠性,提出一种基于区间T-S(takagi-sugeno)模糊故障树的DCS系统输出模块可靠性分析方法。以T-S模糊故障树为基础,构建区间T-S模糊故障树模型,根据底事件的模糊信息计算顶事件失效的故障可能性和模块薄弱环节,给出输出模块可靠性和组成部件的重要度排序,并结合核电厂模拟量输出模块进行实例分析。结果表明:该方法与实际情况相符,可作为传统可靠性分析方法的主要补充。
In order to improve the security and reliability of DCS system,a reliability analysis method of output module of DCS system based on interval T-S(Takagi Sugeno)fuzzy fault tree is proposed.Based on the T-S fuzzy fault tree,the interval T-S fuzzy fault tree model is constructed.According to the fuzzy information of the bottom event,the failure probability of the top event and the weak link of the module are calculated.The reliability of the output module and the importance ranking of the components are given,and an example is analyzed with the analog output module of the nuclear power plant.The results show that the method is consistent with the actual situation and can be used as the main supplement of the traditional reliability analysis method.
作者
曾丽芳
吴志强
刘朝晖
刘明星
田旭峰
Zeng Lifang;Wu Zhiqiang;Liu Zhaohui;Liu Mingxing;Tian Xufeng(Computer School,University of South China,Hengyang 421001,China;Nuclear Power Institute of China,Chengdu 610213,China)
出处
《兵工自动化》
2021年第1期55-59,共5页
Ordnance Industry Automation
