关键词: 退化系统, 缓冲区库存, 几何过程, 平均费用率, 更换, 灵敏度分析

Abstract: To improve the continuity of production process,a deteriorating system with intermediate buffers was presented.Under the assumption that a machine could not be repaired as good as new,a replacement model of deteriorating system with geometric process was built by taking buffer of buffer K stock and replacement policy N as the decision variables.The minimum operating cost was taken as the objective to obtain the average cost rate C(N,K)of system,and the evolution algorithm for solving optimal joint policy was given.A numerical example was used to illustrate the proposed model,and the impact of some parameters on the optimal policy was studied.

Key words: deteriorating systems, buffer stock, geometric process, average cost rate, replacement, sensitivity analysis