Abstract
Proportional, Integral, and Differential controller (PID controller) is the most popular elment in industrial control applications. One of the applications of hot strip mill in steel-making industry is mill drive system which is composed of many masses and shafts, and which has many torsional vibration modes. Due to this vibration, response of drive control system is not sufficient for strip thickness accuracy. Authors have aimed to use popular PID controller in order to improve response specification, and certificated usefulness of PID controller with some kind of filters at suppressing torsional vibrations. Finally in real hot strip mill, strip thickness has been improved with new drive control syetem added by vibration suppression controller.
