Component reallocation and system replacement maintenance based on availability and cost in series systems  

作　　者：FU Yuqiang MA Xiaoyang 

机构地区：[1]School of Mathematics and Physics,University of Science and Technology Beijing,Beijing 100083,China [2]School of Information Management,Beijing Information Science&Technology University,Beijing 100192,China

出　　处：《Journal of Systems Engineering and Electronics》2022年第6期1342-1353,共12页系统工程与电子技术（英文版）

基　　金：supported by the National Natural Science Foundation of China(72101025,72271049);the Fundamental Research Funds for the Central Universities(FRF-TP-20-073A1);the China Postdoct oral Science Foundation(2021M690349)。

摘　　要：Component reallocation(CR)is receiving increasing attention in many engineering systems with functionally interchangeable and unbalanced degradation components.This paper studies a CR and system replacement maintenance policy of series repairable systems,which undergoes minimal repairs for each emergency failure of components,and considers constant downtime and cost of minimal repair,CR and system replacement.Two binary mixed integer nonlinear programming models are respectively established to determine the assignment of CR,and the uptime right before CR and system replacement with the objective of minimizing the system average maintenance cost and maximizing the system availability.Further,we derive the optimal uptime right before system replacement with maximization of the system availability,and then give the relationship between the system availability and the component failure rate.Finally,numerical examples show that the CR and system replacement maintenance policy can effectively reduce the system average maintenance cost and improve the system availability,and further give the sensitivity analysis and insights of the CR and system replacement maintenance policy.

关 键 词：component reallocation(CR) system replacement maintenance cost AVAILABILITY binary mixed integer nonlinear programming minimal repair 

分 类 号：U472[机械工程—车辆工程]