研究离散时间可修系统,讨论了一个可在不同环境下工作的单部件 可修系统,其所处环境的 改变服从马尔可夫更新过程；利用马尔可夫更新理论,得到了系统的可用度,故障频度 和可靠度等各项指标.

Discrete time repairable system is studied in this paper. We discuss a one-unit repairable system operating under changing environment subject to a Markov renewal process. Using Markov renewal theory we obtain some indexes such as the system availability, failure frequency and reliability function.