Generally, passive and active faulttolerantcontrol systems depend on system models-quantitative, qualitative or quasi - quantitative.
被动容错控制和主动容错控制多依赖于系统的模型：定量，半定量或定性模型。
2
The fault probability, the degree of fault tolerance and problem of reliabilty in the faulttolerantcontrolsystem are analyzed in the view of statistics.
基于系统的状态划分，以统计理论的观点分析了容错控制系统中的故障概率、容错能力和可靠性问题。
3
The Markov method is used to analyse the reliability of dual hot - redundant reparable faulttolerantcontrolsystem, and some calculating formula are derived.