热轧带钢交叉轧制窜辊策略的两阶段优化仿真  

Simulation-based Two-Stage Optimization for Roll Shifting Strategy in Cross Rolling Campaign of Hot Strip Mill

作　　者：李维刚[1,2] 郭朝晖[2] 刘相华[3] 

机构地区：[1]东北大学信息科学与工程学院,沈阳110819 [2]宝钢集团中央研究院自动化所,上海201900 [3]东北大学研究院,沈阳110819

出　　处：《系统仿真学报》2013年第11期2737-2742,共6页Journal of System Simulation

基　　金：国家自然科学基金(50974039;50634030)

摘　　要：工作辊轴向窜动技术是实现自由规程轧制的有效途径,窜辊策略对热轧交叉轧制的带钢板形具有重要影响。首先建立了轧辊综合辊型的仿真模型,通过仿真研究窜辊策略对综合辊型的影响,提出中部平滑和边部平滑两个评价指标。接着基于交叉轧制带钢宽度交替变化的特点,建立了交叉轧制窜辊策略的两阶段多目标优化模型;第一阶段优化整个轧制计划带钢的窜辊位置,第二阶段进一步优化宽带钢的窜辊位置,从而获得最终的Pareto优化窜辊策略。工业应用案例验证了相关模型和优化窜辊策略的有效性,显著改善了交叉轧制带钢的板形质量,延长了轧制计划公里数。Work roll shifting technology is an effective way to achieve schedule free rolling, and shifting strategy significantly affects strip profile in cross rolling campaign of hot strip mill. Firstly, a simulation model for roll comprehensive contour was built. The effect of roll shifting strategy on comprehensive contour was investigated by numerical simulation, and two evaluation indexes including body smoothness and edge smoothness were presented. Secondly, based on alternate change of strip width, a simulationbased two-stage optimization model for roll shifting strategy was built. Shifting position of all strips was optimized in the first stage, and the one of wide strips was further optimized in the second stage, then the final Pareto-optimal solutions were obtained. Finally, industrial test confirms the validity of related model and shifting strategy, and it can improve strip profile and extend rolling miles of rolling campaign.

关 键 词：热轧 交叉轧制 轧辊横移 系统仿真 多目标优化 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]