摘要
热连轧生产过程中,短行程是控制轧件头尾宽度的重要手段.为提高短行程的控制精度,提出了一种短行程自适应策略,以短行程关键坐标位置为优化变量并建立目标函数,使用单纯形替换法对目标函数求解,得到了最优宽度补偿曲线,进一步对短行程关键参数进行平滑处理,实现了对短行程曲线关键参数的优化过程,提高了轧件头尾的宽度控制精度.本优化策略已成功应用于某热连轧生产线,实际生产数据表明,采用自适应优化策略之后轧件头尾与中部稳定段的宽度偏差控制在2.0 mm之内达到了90%左右,提高了宽度控制精度,具有良好的实际应用效果.
The SSC （short stroke control） is a key issue in the width control of the strip head end in hot tandem roiling process. In order to enhance the width precision, art SSC adaptive strategy was proposed, the objective function with the key points of the SSC curve and actual width error curve was founded, and in the process for looking for the optimal solution, the NM （Nelder- Mead） simplex algorithm was used, finally the optimized width compensation curve was received, and the SSC on-line adaptive strategy was realized with the exponential smoothing method. The adaptive strategy was successfully applied to a tandem hot mill, and the application result showed that the width deviation between the head end and the stable part can be controlled within 2.0 mm, and the proportion is up to 90 % , which can meet the actual production, and has good application prospect.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第3期343-346,共4页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(51074051)
辽宁省博士启动基金资助项目(20131033)
关键词
热轧
短行程控制
目标函数
自适应策略
单纯形替换法
hot rolling
short stroke control （ SSC ）
objective function
adaptive strategy
simplex algorithm
