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论文类型：期刊论文

发表时间：2009-06-01

发表刊物：CONTROL ENGINEERING PRACTICE

收录刊物：SCIE、EI

卷号：17

期号：6

页面范围：629-641

ISSN号：0967-0661

关键字：Hot rolling production scheduling; Vehicle routing problem with time windows; Heuristics; Intelligent search algorithms

摘要：Hot rolling scheduling is a difficult problem in the steel processing industry. It involves many objectives and constraints in both technical and practical respects. A two-stage scheduling method is proposed in this paper. Batch planning of staple material is formulated as a VRPTW, which is solved with a modified PGA. Then, batches of the established units are optimized by adjusting rolling sequences using intelligent search algorithms to reach higher hot charge ratios. This method has been applied to a hot strip mill belonging to Baosteel in China. Our results demonstrate that the proposed technique can improve production efficiency and offer significant economic benefits. (C) 2008 Elsevier Ltd. All rights reserved.