以带缓存双机系统为研究对象，结合随机波动的加工能力指标与可靠度，动态描述设备的综合性能退化程度，并进一步研究了维护规划与缓存配置的联合优化方法.针对带缓存双机系统的生产形式和运行特征，分阶段进行缓存动态建模，基于全局构建了系统的缓存和缺货成本模型，以总平均运行成本最低为目标，对系统的预防维护和缓存配置进行联合决策.通过案例分析获得最佳维护策略，论证了合理配置缓存对降低长期成本具有显著作用.
The article introduces a processing capability index combined with reliability into describing dynamic degradation of a two-machine-one-buffer system, and studies a joint optimization method of preventive maintenance and buffer allocation. Considering the production states and operation characteristics of manufacturing system, we establish a multi-stage dynamic model to illustrate the buffer fluctuation, and discuss the corresponding buffer cost and shortage cost models comprehensively. The minimum total average cost is used to develop the optimal joint policy of preventive maintenance and buffer allocation. A numerical case is used to prove the effectiveness of the proposed policy and the results have demonstrated the significant effect of buffer allocation on cost saving.
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