CAJ | 학술논문

针对传统的可靠性分析方法分析CTCS-3级ATP系统动态失效问题的不足，提出采用动态故障树分析其可靠性。首先，分析系统的结构和功能建立动态故障树模型；其次，采用深度优先最左遍历算法搜索动态故障树模型，得到独立的子树；最后，在引入可修系统可靠性指标基础上，采用解析法和马尔科夫矩阵迭代法求解子树，结合分层迭代方法对动态故障树分析法改进，以减小运算量，使得上述可靠性指标能用于CTCS-3级ATP系统的可靠性评估。计算所得可靠性指标与可靠性框图分析得到的结果对比表明：动态故障树能够更好地描述系统的冗余性和容错性等特点，提高了可靠性指标的精度。
침대전통적가고성분석방법분석CTCS-3급ATP계통동태실효문제적불족，제출채용동태고장수분석기가고성。수선，분석계통적결구화공능건립동태고장수모형；기차，채용심도우선최좌편력산법수색동태고장수모형，득도독립적자수；최후，재인입가수계통가고성지표기출상，채용해석법화마이과부구진질대법구해자수，결합분층질대방법대동태고장수분석법개진，이감소운산량，사득상술가고성지표능용우CTCS-3급ATP계통적가고성평고。계산소득가고성지표여가고성광도분석득도적결과대비표명：동태고장수능구경호지묘술계통적용여성화용착성등특점，제고료가고성지표적정도。
According to the draw back of traditional methods of reliability analysis describing the dynamic failure problem of the ATP system of CTCS-3 ,dynamic fault tree was used to analyze the reliability of the system .Firstly ,the dynamic fault tree model was established by analyzing the structure and function of the system .Secondly ,the depth-first left-most traversal algorithm was used to search on the dynamic fault tree model to obtain the independent subtrees .Finally ,after introducing the reliability indexes of repairable system ,the analytic method and Markov matrix it-eration method were adopted to solve subtrees .The hierarchical iteration method was applied to improve dynamic fault tree analysis method to reduce the quantity of computation so that the reli-ability indexes could be used for reliability evaluation of the ATP system of CTCS-3 .Comparing the results of above method with the results of the reliability block diagram method ,it is show that dynamic fault tree analysis can describe the characteristics of redundancy and fault-tolerance of system better and the accuracy of reliability indexes is improved .