Reliability Analysis of Repairable System with Multiple Closed-Loop Feedbacks Based on GO Method

In order to solve the problem of reliability modeling and the analysis of complex systems with multiple closed-loop feedbacks, a new reliability analysis method for repairable systems with multiple closed-loop feedbacks is proposed based on the goal-oriented (GO) methodology. Firstly, the basic theories and advantages of GO method are introduced. Secondly, a type-24B multiple closed-loop feedback structure operator is proposed through GO method with its operation formula given, which expands the types of GO method operators and the application scope of their reliabil-ity analysis. Finally, taking a certain type of diesel engine fuel supply system an example, the quan-titative and qualitative analysis is carried out through GO method, Monte Carlo simulation as well as FTA respectively. The availability results verify the availability of the proposed type-24B opera-tor in the reliability analysis of multiple closed-loop feedback systems. The qualitative analysis results indicate the accuracy and usability of the GO method as a qualitative analysis method.