计算机联锁系统的可靠性和安全性比较  

Comparing of reliability and security with Computer-based Interlocking System multiplyingmodel

作　　者：马小玲[1] 张友鹏[1] 杜求茂[1] 郑伟[1] 

机构地区：[1]兰州交通大学自动化与电气工程学院,兰州730070

出　　处：《铁路计算机应用》2009年第6期46-49,共4页Railway Computer Application

摘　　要：可靠性和安全性是计算机联锁系统的重要性能指标。本文在考虑了故障覆盖率及维修率的情况下,建立了三取二和二乘二取二计算机联锁系统的马尔可夫模型。利用MATLAB仿真功能计算了两系统的可靠度和安全度,并给出了相关时间曲线。通过分析比较,得出故障检测率对两系统可靠度和安全度有较大影响,且二乘二取二比三取二系统具有更高可靠性和安全性。Reliability and safety were key properties of the Computer-based Interlocking System. The Markov model of the two systems were set up with considering maintenance rate and faulty coverage ratio. Then, the reliability and security of the two systems were simulated and computed with Matlab. It was showed that faulty coverage ratio had a greater impact on reliability and safety of the two systems ,and 2-out-of-2 multiplying＇s reliability and safety were better than the System of 2- out-of-3.

关 键 词：计算机联锁系统 可靠性 安全性 比较 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]