基于热连轧机的厚度复合控制应用研究

Applied research on strip thickness composite control based on hot continuous rolling mill

针对单一反馈式的AGC方法解决热连轧机控制系统厚度精度不够的问题,本文引入了GM-AGC的前馈预控作为复合控制的控制策略,实时解决了由于轧机入口随机厚度波动的干扰对出口厚度精度的影响,同时减轻了复合控制中反馈调节的负担。仿真结果表明了复合控制的有效性,带材厚度波动由8%降到1%,其成果对有色冶金行业提高带材质量具有重要的实用价值。

Since the single teedback AGC method is not enough to solve the thickness accuracy problem for hot continuous rolling mills, the GM-AGC feedforward pre-control is introduced in this paper as composite control strategy to eliminate the influence of the entrance random thickness fluctuations on outlet thickness accuracy and reduce the burden on the feedback regulation in the composite control. The simulation result indicates the effec- tivity of composite control. The strip thickness fluctuation was decreased from 8% to 1% by the control meth- od. It is very important for colored metallurgy industry to improve the quality of steel strip .