铝箔厚度控制系统及厚度优化策略

根据铝箔轧制的特点和轧机仪表配置，设计了适用于铝箔轧制的厚度控制系统.给出了各厚度控制方式的控制原理，采用Smith预估和积分变增益的方法减小纯滞后对控制系统的影响，并实现了对其他控制环节的解耦补偿.针对张力调节量振荡影响轧制过程稳定性的问题给出了张力自适应控制策略，提出了轧制速度AGC的变加速度控制方案.为了避免单个厚度控制器工作时的溢出现象，采用主控制器和优化控制器的联合控制实现了厚度控制中的优化控制.提出了速度最佳化和目标厚度自适应控制策略，为企业获得最大的产量和效益.现场应用表明，该系统取得了良好的控制效果.

Automatic Gauge Control System and Thickness Optimization Strategy of Aluminum Foil

According to the characteristics of foil rolling process and the instrument configuration， a set of automatic gauge control (AGC) system for aluminum foil rolling mill was designed. The control principle of every control method was given. The Smith predictor and variable gain were used to reduce the effect of pure delay on the control system. And the decoupling compensation for other control link was implemented. The tension adaptive control scheme was given according to the tension oscillating problem， and the variable acceleration control in rolling speed AGC was proposed. In order to avoid the spillover phenomena of single controller， the thickness optimization control was implemented by using main controller and optimize controller. For the maximal production， the rolling speed maximization control and target thickness adaptive control were brought forward. Application results indicated that the system shows good control effect.