关键词: 多部件系统, 经济生产批量, 视情维护, 部件结构重要度, 蒙特卡洛仿真

Abstract: A joint model of production lot sizing and condition-based maintenance for a complex production system was proposed.Aiming at the differences of fault mechanism between components,Weibull distribution and gamma process was used to model the life and the deterioration process for different components.To evaluate the conditions of components,the inspections were carried out after each production run.Based on predictive reliability and structural importance of each component,the condition-based maintenance decision-making rule was formulated.By taking the production lot size and the preventive maintenance threshold as the 2D decision variables,a total cost mathematical model in finite time horizon was built with the assumption that the preventive maintenance was imperfect.Based on Monte Carlo simulation technique,an optimization algorithm was devised to solve the problem.The proposed model was illustrated through a case study and some comparative experiments were conducted.

Key words: multi-component system, economic production quantity, condition-based maintenance, structural importance measure, Monte Carlo simulation