针对多态系统的任务需求可变问题, 对马尔可夫模型进行一定扩展, 结合马尔可夫回报模型的基本定义, 推导出多态可修系统的性能-需求模型。在此基础上, 通过对回报矩阵和转移强度矩阵进行一定变换, 提出一种考虑任务需求可变的多态可修系统可靠性评估方法, 并用案例验证了方法的可行性。

In order to solve the problem of variable task requirements in Multi-State System(MSS), the Markov model is extended, and a performance-demand model of multi-state repairable system is derived based on the basic definition of Markov reward model.On this basis, a reliability evaluation method is proposed for the multi-state repairable system considering variable task requirements by certain transformation of reward matrix and transition intensity matrix. The feasibility of the method is verified by using a case.