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Multi-objective optimization for draft scheduling of hot strip mill

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An Erratum to this article was published on 28 December 2012

Abstract

A multi-objective optimization model for draft scheduling of hot strip mill was presented, rolling power minimizing, rolling force ratio distribution and good strip shape as the objective functions. A multi-objective differential evolution algorithm based on decomposition (MODE/D). The two-objective and three-objective optimization experiments were performed respectively to demonstrate the optimal solutions of trade-off. The simulation results show that MODE/D can obtain a good Pareto-optimal front, which suggests a series of alternative solutions to draft scheduling. The extreme Pareto solutions are found feasible and the centres of the Pareto fronts give a good compromise. The conflict exists between each two ones of three objectives. The final optimal solution is selected from the Pareto-optimal front by the importance of objectives, and it can achieve a better performance in all objective dimensions than the empirical solutions. Finally, the practical application cases confirm the feasibility of the multi-objective approach, and the optimal solutions can gain a better rolling stability than the empirical solutions, and strip flatness decreases from (0±163) IU to (0±45) IU in industrial production.

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Authors and Affiliations

  1. College of Information Science and Engineering, Northeastern University, Shenyang, 110819, China

    Wei-gang Li  (李维刚) & Zhao-hui Guo  (郭朝晖)

  2. Automation Division of Research Institute, Baosteel Group Corporation, Shanghai, 201900, China

    Wei-gang Li  (李维刚) & Zhao-hui Guo  (郭朝晖)

  3. Research Institute of Science and Technology, Northeastern University, Shenyang, 110819, China

    Xiang-hua Liu  (刘相华)

Authors
  1. Wei-gang Li  (李维刚)
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  2. Xiang-hua Liu  (刘相华)
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  3. Zhao-hui Guo  (郭朝晖)
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Additional information

Foundation item: Projects(50974039, 50634030) supported by the National Natural Science Foundation of China

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Li, Wg., Liu, Xh. & Guo, Zh. Multi-objective optimization for draft scheduling of hot strip mill. J. Cent. South Univ. 19, 3069–3078 (2012). https://doi.org/10.1007/s11771-012-1380-z

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  • DOI: https://doi.org/10.1007/s11771-012-1380-z

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