摘要
安全性评估是适航符合性验证的重要方法。对马尔可夫分析在系统安全性评估中的应用进行了深入研究,给出了马尔可夫在系统安全性评估中的一般分析方法。运用马尔可夫方法和故障树方法分别对飞行控制系统的同一种失效状态进行了建模分析,并对二者的分析结果进行了比较,得出对并联顺序系统进行安全性分析时马尔可夫分析方法具有更高的定量分析精度,并克服了故障树静态分析特性的缺点。
Safety analysis is an important method of compliance demonstration for airworthiness regulation. The application of Markov analysis in system safety assessment is studied, and the common method of Markov analysis for system safety assessment is given. A failure state of flight control system is modeled and analyzed by Markov analysis and fault tree analysis respectively, and the results of the two methods are compared. It shows that Markov method has higher accuracy of quantitative analysis when the safety analysis of the sequence parallel system is analyzed. This method also overcomes the shortcomings of the static analysis features of the fault tree analysis.
出处
《中国民航大学学报》
CAS
2011年第4期16-19,共4页
Journal of Civil Aviation University of China
基金
民航局科技项目(MHRD200918)
关键词
安全性评估
飞控系统
故障树
马尔可夫
safety assessment
flight control system
fault tree analysis
Markov analysis
