EXTENDED RELIABILITY MODELING AND SIMULATION OF MULTI-STATE PRODUCTION SYSTEMS BASED ON DYNAMIC FAULT TREE

In order to cope with increasingly complex production tasks, the reliability requirements of some production systems are becoming increasingly high. During operation, the production systems are mostly multi-state in performance, mainly due to item failure or degradation in the system. As we all know, Dynamic Fault Tree is often used to evaluate the reliability of two-state systems, but it does not work for multi-state systems. Therefore, this paper extended the performance degradation logic gate model based on Dynamic Fault Tree and gave related simulation algorithms based on Monte Carlo sampling to calculate quantitative values for reliability such as Availability, MTBCF, MTTR, and so on. Finally, this article, taking production system D as an example, demonstrated the effectiveness of this method.