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Two-stage optimized scheduling method and application for steelmaking and continuous casting

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4 Author(s)
Xiuying Wang ; Research Center of Automation, Northeastern University, Shenyang 110006, Liaoning, China ; Tianyou Chai ; Binglin Zheng ; Hong Wang

Steelmaking and continuous casting is a difficult process that is manually scheduled due to its overwhelming number of objectives and restriction factors. This paper provides a new method of two-stage optimized scheduling for steelmaking and continuous casting. In the first stage, a preliminary schedule is established based on the same usage rate of parallel machines and minimized time conflict. In the second stage, a linear programming model of elimination time conflict is established. By solving the two mathematical models, an operable schedule is produced. The method of two-stage optimized scheduling has been embedded a scheduling system which is also developed and successfully applied to a large steel plant in China. The industrial application has demonstrated that the proposed method cannot only meet the requirement of practical production, but also has a wide application in industry.

Published in:

Proceedings of the 2010 American Control Conference

Date of Conference:

June 30 2010-July 2 2010