Abstract
ROLLING STRIP THICKNESS CONTROL USING I-P, I-PD AND PIFIRST ORDER OMPENSATORS COMPARED WITH AN ADAPTIVE PI CONTROLLER
Galal Ali Hassaan*
ABSTRACT
The control of strip thickness in rolling mills is essential to maintainuniform accurate thickness for the produced metallic strips. The paperpresents the control of strip thickness using three compensators fromthe second generation of control compensators: I-P, I-PD and PI-firstorder compensators. A proper tuning technique is selected to tune thecompensators using a proper performance index. The step timeresponse of the control system using the three proposed compensatorsis presented and compared with using an adaptive PI controller tocontrol the same rolling mill and the time-based characteristics arecompared. The comparison reveals the best compensator among thefour controllers/compensators depending on a graphical and quantitative comparison study.
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