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在容错控制系统的设计过程中，进行系统的可靠性建模和分析求得容错控制系统可靠性是一项非常重要的工作．它是许多设计工作，如设计方案的选择优化和一些设计参数的确定等的重要理论依据．在容错控制系统的可靠性分析中，利用马尔柯夫过程理论对容错控制系统进行可靠性建模能够较为真实地描述系统的实际工作情况．但是由于容错系统为了达到高可靠性而采用了大量的冗余配置及重构技术，使得该可靠性模型往往变得相当复杂．因此，对系统可靠性模型进行一些必要的化简，可以减少许多计算量和使该模型更加符合实际使用的要求
In the design process of fault-tolerant control system, it is very important to carry on the system reliability modeling and analysis to get the reliability of the fault-tolerant control system. It is a lot of design work, such as design optimization and selection of some design parameters to determine the important theoretical basis. In the reliability analysis of fault-tolerant control system, the use of Markov process theory to fault-tolerant control system for reliability modeling can be more realistic description of the actual work of the system. However, due to the large number of redundant configurations and reconfiguration techniques used in fault-tolerant systems to achieve high reliability, the reliability model often becomes quite complex. Therefore, some necessary simplification of the system reliability model can reduce many computations and make the model more in line with the requirements of actual use