In modern mass production,the production capacity of the assembly line is limited not only by the unrelia-bility of the equipment and the finiteness of the buffers,but also by the uncertainty of parts supply.Considering the impact of parts supply on assembly lines,the performance evaluation and inventory control of two-machine assembly lines with parts inventories was studied.For assembly workstation consisting of one assembly machine and one part inventories,a Markov chain model was established to interpret the dynamics of assembly workstation with(s,S)policy.Closed-form formulae for the steady state probability distribution were derived.For two-machine assembly lines,the assembly workstation was equivalent to one machine.Analytical formulae of performance indicators were derived.Furthermore,an inventory control model was formulated to balance inventory related cost and productivity.An adaptive Genetic algorithm was utilized to solve the inventory control model.The case studies were carried out to validate the accuracy of the proposed performance evaluation method and analyze the monotonicity of performance in-dicators to inventory control thresholds,as well as the variation trends of optimal control thresholds with assembly machine parameters.The results showed that this study provided effective methods of performance evaluation and inventory control for assembly lines with parts inventories.
关键词
装配线/性能评估/(s,S)库存控制策略/库存控制
Key words
assembly line/performance evaluation/(s,S)inventory control policy/inventory control
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基金项目
国家自然科学基金重点资助项目(72331003)
国家自然科学基金面上资助项目(71971052)
中国博士后科学基金面上资助项目(2023M730514)
大规模个性化定制系统与技术全国重点实验室开放课题资助项目(H&C-MPC-2023-04-03)
中央高校基本业务费国防重大资助项目(2023GFZD01)
中央高校基本科研业务专项资金资助项目(N2224002-03)
Fundamental Research Funds for the Central Universities,China(2023GFZD01)
Fundamental Research Funds for the Central Universities,China(N2224002-03)
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