Optimal transfer lots for batch manufacturing: A basic case and extensions
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One of the weaknesses of most MRP systems, is that they do not allow overlapping of activities on a batch by sequential machines. However, by letting the second machine start processing a batch before the first one has finished it yet--a well known idea utilized by many practitioners--we can often achieve considerable improvement in terms of shorter lead time. This requires the use of partial transfer lots. In this paper we address the problem from a theoretical point of view. We optimize the sizes of the transfer lots for overlapping processing on two machines to as to minimize the makespan under a constraint on the number of transfers. We also discuss the issue of several consecutive jobs (batches), and how to extend the solution to several machines in such a manner that all machines process the batch continuously
NPS Report NumberNPS-54-87-010
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Trietsch, Dan (Monterey, California. Naval Postgraduate School, 1989-09); NPS-54-89-011Using transfer lots, we can overlap the processing of a batch on several consecutive machines, and thus reduce the makespan considerably. This in turn promotes work-in-process reduction. In this paper we investigate the ...
Shaeffer, Blanca A. (Monterey, California. Naval Postgraduate School, 2000-03-01);Nowadays, it is common to see the use of a network of machines to distribute the workload and to share information between machines. In these distributed systems, the scheduling of resources to applications may be accomplished ...
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