Performance Modeling of Fault-Tolerant Machining System with Working Vacation and Working Breakdown

摘要

This study deals with the performance modeling of finite Markov M/M/1/L/WV model for the fault-tolerant machining system (FTMS). The concepts of redundancy along with the provision of dissimilar warm standbys are taken into account in order to maintain the pre-required high reliability of the system. The repairman is allowed to take a vacation in case of no workload of broken down machines. The failed machines are also repaired with slower rate by the repairman during working vacation period. The analytical method, namely matrix method, is implemented for evaluating the transient queue size distribution and closed form expressions of the performance metrics of multi-component FTMS. Moreover, cost function is constructed, which can be further used to control the system cost and other factors. Numerical simulation is also carried out to exhibit the effect of parameters on various system indices.