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A complexity model for sequence planning in mixed-model assembly lines
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DOI：10.1016/j.jmsy.2011.07.006.png)
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Sequence planning is an important problem in assembly line design. Iris to determine the order of assembly tasks to be performed sequentially. Significant research has been done to find good sequences based on various criteria, such as process time, investment cost, and product quality. This paper discusses the selection of optimal sequences based on complexity induced by product variety in mixed-model assembly line. The complexity was defined as operator choice complexity, which indirectly measures the human performance in making choices, such as selecting parts, tools, fixtures, and assembly procedures in a multi-product, multi-stage, manual assembly environment. The complexity measure and its model for assembly lines have been developed in an earlier paper by the authors. According to the complexity models developed, assembly sequence determines the directions in which complexity flows. Thus proper assembly sequence planning can reduce complexity. However, due to the difficulty of handling the directions of complexity flows in optimization, a transformed network flow model is formulated and solved based on dynamic programming. Methodologies developed in this paper extend the previous work on modeling complexity, and provide solution strategies for assembly sequence planning to minimize complexity. (C) 2011 The Society of Manufacturing Engineers. Published by Elsevier Ltd. All rights reserved.
Keyword:
Complexity
Assembly sequence
Mixed-model assembly systems
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IF:
14.2
论文数:
2.7K
被引数:
1.6W
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