Optimization Model for Roll Shifting Strategy With Varying Stroke in Hot Strip Mill
LI Wei-gang1,2,LIU Xiang-hua3,YI Jian2,GUO Zhao-hui2
1. College of Information Science and Engineering, Northeastern University, Shenyang 110819, Liaoning, China 2. Institute of Automation, Baosteel Technology Center, Shanghai 201900, China 3. Research Institute of Science and Technology, Northeastern University, Shenyang 110819, Liaoning, China
Abstract：An optimization model of shifting strategy with varying stroke for conventional flat work rolls was presented, and it could solve the optimal roll shifting strategy for specific rolling campaign. First, selection principle of control parameters in conventional shifting strategy was gained by simulation analysis. And then, a generation algorithm of shifting strategy with varying stroke was proposed. It decided mapping relationship between four shifting control parameters and roll shifting strategy for a roll campaign. The objective function was set up by characteristic parameters of roll wear, namely cat ear height and the width of roll surface wear. Finally, the PSO algorithm combining with heuristic rules of shifting strategy was used to solve the optimal solution of shifting strategy. Industrial production verifies the validity of the model. The optimal shifting strategy with varying stroke can significantly improves the quality of strip flatness and profile, extending rolling miles of a roll campaign.
李维刚,，刘相华，易剑，郭朝晖. 热轧带钢变行程窜辊策略优化模型[J]. 钢铁, 2012, 47(3): 46-50.
LI Wei-gang1,2,LIU Xiang-hua3,YI Jian2,GUO Zhao-hui2. Optimization Model for Roll Shifting Strategy With Varying Stroke in Hot Strip Mill. Iron and Steel, 2012, 47(3): 46-50.
2012, Vol. 47 
