Advanced Control for the Threading of a Tandem Cold Metal Sheet Mill

摘要

The threading of the tandem rolling of cold metal strip is a significant function in this complex, highly nonlinear, important industrial process. In our previous work, we have developed a new advanced method for control of this process that realized an improvement in the quality and yield of the output. Additionally we have realized improvements in our other previous work on advanced control for tandem hot rolling. All of these improvements have carried over quite well into the recent upgrading of the control to maintain tandem cold mill operation during faults in various measurements, as described in our recent paper. In this upgrading, we have utilized two major improvements as applied to tandem cold rolling: specifically, 1) the addition of a virtual rolling technique, and 2) the simplification of the basic control method. In this paper, we present the results of our recent follow-on work that shows the improvements realized in use of this advanced control for the threading of the tandem cold mill.