关键词: 多部件系统, 视情机会维修, 非完美维修, 劣化状态空间划分, 联合稳态概率密度

Abstract: To further research the modeling method with imperfect maintenance effect,by using the deterioration state space partitioning method,the condition-based opportunistic maintenance for multi-units system with imperfect maintenance actions was modeled,and the condition-based opportunistic maintenance strategy based on periodic detection was formulated.The joint deterioration state space partitioning model was built,and all possible maintenance combinations of multi-unit systems with imperfect maintenance actions at each maintenance decision point and their corresponding probabilities were deduced.The stationary probabilistic density and its numerical solution were developed.The correctness of the proposed deterioration state space partitioning method was verified with numerical experiments.Eventually,the effectiveness of the proposed method for follow-up repair optimization was also verified．

Key words: multi-unit systems, condition-based opportunistic maintenance, imperfect maintenance, deterioration state space partitioning method, joint stationary probabilistic density