2011.33: Dynamic Optimal Scheduling Method and Its Application for Converter Fault in Steelmaking and Continuous Casting Production Process
2011.33: Shengping Yu, Tianyou Chai, Hong Wang, Xinfu Pang and Binglin Zheng (2011) Dynamic Optimal Scheduling Method and Its Application for Converter Fault in Steelmaking and Continuous Casting Production Process. In: 18th IFAC World Congress, August 28 - September 2, 2011, Milano, Italy.
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In steelmaking and continuous casting (SMCC) production process, converter fault can lead to unexpected changes to the pre-specified converter-continuous caster production mode so that the original scheduling plan becomes unrealizable. In this paper, the dynamic scheduling problem in response to converter fault is firstly analyzed. This is then followed by the establishment of a novel multi-objective nonlinear programming model (MONPM) by introducing the production mode parameter α, production schedule parameter β and χ. The proposed method considers changes in production mode, production schedule of charge, the interval characteristics of processing time. In specific, a two-stage dynamic optimal scheduling method is proposed including the production path planning of charges (PPP) and the production time scheduling (PTS). As a result, a dynamic optimal scheduling software system (DOSSS) is developed and is successfully applied to the scheduling of the largest iron and steel company (BaoSteel) in China. The real-time application shows that the proposed method can efficiently reduce scheduling time, significantly increase the outputs of converters and dramatically shorten the redundant waiting time for molten steel.
|Item Type:||Conference or Workshop Item (Paper)|
|Uncontrolled Keywords:||steelmaking and continuous casting; dynamic optimization; production mode; nonlinear programming; scheduling system.|
|Subjects:||MSC 2000 > 49 Calculus of variations and optimal control; optimization|
MSC 2000 > 65 Numerical analysis
MSC 2000 > 90 Operations research, mathematical programming
|Deposited By:||Mr Houman Dallali|
|Deposited On:||13 April 2011|