Analysis of A Stocastic Model on Three-Similar Units Three-Phased Series-Parallel-Series Mission System

In this article, we deal with the reliability and availability analysis of a stochastic model in a three-phase mission system with three similar units. The developed system was considered in which the units operate in series, parallel and series configuration respectively. The single repair facility is expected to repair drives according to the FCFS (first come first serve) model. Using the semi-Markov process and regenerative point techniques, different measurements of the system performance are obtained in each step. The system was analyzed graphically by taking a particular case. Different conclusions were drawn on the reliability and cost consideration of the system in each phase, as well as for the whole system (such as combined Phase I, Phase II, Phase III).