可维修性三取二系统可靠性分析

摘要

为了综合考虑共因失效、人因失误及预防性维修对系统可靠性的影响,利用马尔科夫模型对可维修性三取二系统进行可靠性分析.建立了马尔科夫状态转移图,根据马尔科夫状态转移图列出常微分方程组,利用MATLAB进行仿真分析.结果表明:共因失效和人因失误降低了系统的可靠性,而预防性维修提高了系统的可靠性.%Markov model is formulated to analyze the reliability of three vote two redundant system influenced by the effects of common cause failure, preventive maintenance and human error. Then state transition diagram is established. And state transition equation could be acquired and simulation analysis with the help of MATAB. The results show that common cause failure and human error reduced system reliability, preventive maintenance increased system reliability.