Reliability Analysis of 2-Component Standby Redundant System with Priority under Limited Information

Some theoretical evaluation methods of mean time to failure (MTTF) in 2-component standby redundant system with priority have been suggested under the prerequisite that the probability distributions of failure and repair times in each component are respectively specified by the explicit functions. However, this prerequisite might be considerably strict in practical scenes. If we cannot identify explicitly the probability distributions of failure and repair times in each component, the methods mentioned above are not applicable. In contrast, the mean and variance are the required minimum information on the probability distribution. In late years, under the limited information that only the mean and variance of failure and repair times in each component are specified, the evaluation method of MTTF in the 2-component standby redundant system with priority has been proposed. In this study, we expand the evaluation method of MTTF in the 2-component standby redundant system with priority under such a situation. We consider the evaluation of the variance of system failure time in the 2-component standby redundant system with priority in the case that only the mean and variance about failure and repair times are specified. Furthermore, based on the evaluated MTTF and variance of system failure time, the reliability analysis in the standby redundant system is addressed.