Nonlinear receding horizon control of thickness and tension in a tandem cold mill with a variable rolling speed

Abstract

For the precise control of tension and thickness in a tandem cold mill during acceleration and deceleration, we have developed a nonlinear model including the rolling speed as a time-varying parameter. It is demonstrated from simulation results that nonlinear receding horizon control by real-time optimization results in a satisfactory performance for the nonlinear model. © 2012 ISIJ.