摘要
在工程风险评价的失效可能性计算中,故障树重要度分析是一项重要技术,它经常遇到许多不确定、不完整的因素.采用粗糙集理论对这些不确定、不完整数据进行处理与分析,并通过埋地燃气管道的外腐蚀故障树重要度分析的实例,阐述了粗糙集理论的概念、原理、方法和应用.结果表明,粗糙集理论是一种完全基于客观的综合重要度分析方法,在工程上具有实用意义.
In the computation of LoF （ Likelihood of Failure） for engineering risk analysis the importance analysis of fault tree is an important technology. In the analysis a lot of incomplete and uncertain factors are often met. The importance analysis of these factors in fault tree was processed and analyzed by rough set theory. The concepts, principle, methodology and application of rough set theory were expressed by an example of importance analysis on external surface corrosion fault tree of gas pipe. The computed results showed that the approach processing incomplete and uncertain data by rough set theory is an objective approach for structur importance analysis and a useful significant method for engineers.
出处
《南京工业大学学报（自然科学版）》
CAS
2007年第1期60-64,共5页
Journal of Nanjing Tech University(Natural Science Edition)
关键词
粗糙集理论
故障树
重要度分析
腐蚀
rough set theory
fault tree
importance analysis
corrosion
