摘要： 轨道交通运行控制系统对安全计算机平台的可靠性及安全性要求很高。为此，采用马尔可夫模型，在考虑故障检测率、维修率及共模故障影响的情况下，通过Matlab仿真分析故障检测率及维修率对安全计算机平台可靠性与安全性的影响。结果表明，基于三模冗余的安全计算机平台具有较高的可靠性和安全性。

关键词: 三模冗余, 共模故障, 故障检测率, 维修率, 马尔可夫模型, 可靠性, 安全性

Abstract: Aiming at high reliability and high security design principles for rail transit security computer platform, this paper uses Markov models, considers the fault detection rate, maintenance rate and the impact of common mode fault, then analyses Three-module Redundancy(TMR) computer reliability and safety. The influences of faulty coverage ratio and maintenance rate on the reliability and security of the system are simulated with Matlab.

Key words: Triple-module Redundancy(TMR), common mode fault, fault detection rate, maintenance rate, Markov model, reliability, security

中图分类号: 

• TP315