Dynamic Matrix Control (DMC) of Rolling Mills

Abstract

A dynamic matrix control (DMC) algorithm is used for the control of the exit strip thickness of a simulated rolling mill. The DMC is tuned using the recently proposed method by Cooper and colleagues [17 18]. The performance of the DMC is analyzed and compared to those obtained from the classical PI controller and Smith predictor. The sensitivity of the DMC to changes in the plant parameters is also investigated. The simulation results show that the DMC offers a very good performance and that it is much more robust than the Smith predictor and not as robust as the conventional PI controller.

Keywords:

• DMC control
• Rolling mill
• Smith predictor

Notes

∗Refers to percent change relative to nominal values.

∗Unstable.