Study and application of scheduling method for just-in-time production in flexible job shops
Study and application of scheduling method for just-in-time production in flexible job shops
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DOI：
10.1109/ieem.2011.6117930
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发表时间：
2011-12
期刊：
影响因子：
--
通讯作者：
W. Weng;S. Fujimura
中科院分区：
文献类型：
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作者：
W. Weng;S. Fujimura
由于连锁生产车间之间的加工速度和交付不一致，制造链上沿着生产车间之间的作业流不顺畅是工业中常见的问题。由于生产车间之间的协调涉及许多因素，问题很复杂，迄今为止很少有解决方案。本研究提出了一种方法，能够解决这个问题，通过实施基于时间的制造，使速度和时间的每个商店的工作流出，以配合其继任者的工作流入。该方法由离线作业计划制定和在线作业过程控制两部分组成。它的目标是在下一个生产车间需要的时候以准时（JIT）的方式完成每一项工作。该方法基于柔性作业车间环境，易于转化为具有相似特征的其他车间，有望广泛应用于JIT调度问题。最后通过一个工业实例进行了分析，结果表明该方法具有较强的准时化作业完成能力，能有效地预防误工，减少最大完工时间。
The unsmooth job flow between the production shops along a manufacturing chain is a problem commonly seen in industries due to the inconsistency in processing speed and delivery between the chained production shops. With many factors involved in the coordination between production shops, the problem is complex and few solutions have been provided to date. This study presents an approach able to solve this problem by implementing time-based manufacturing that enables the speed and timing of each shop's job outflow to match those of its successor shop's job inflow. The proposed method is composed of offline schedule making and online job processing control. It aims to complete each job in a just-in-time (JIT) manner at the time the job is wanted by the next production shop. Designed upon a flexible job shop environment, which is easy to be transformed into other shops with similar characters, the proposed method is expected to be widely applicable to JIT scheduling problems. An industrial case study is made and results show that the proposed method has a strong ability in JIT job completion, tardy job prevention and makespan reduction.