U-model enhanced MIMO decoupling control of thickness and plate type of cold rolling temper mill

Abstract

This paper presents a new design procedure for control of thickness and plate type of cold rolling temper mill. A novel concept for control system design - U-model based design methodology with expanded multi-input and multi-output (MIMO) formulation for this application separates specifying closed loop performance-controller from process models. In contrast to classical <model based design> and <model free design> methodologies, this <model independent design> takes two parallel formations; 1) designs an invariant virtual controller with specified closed loop transfer function in a feedback control loop; 2) determines real controller output by resolving the inverse of the plant U-model. Further, this study analyses some of the associated properties for assurance and guidance for ongoing theoretical development and applications. To validate the design procedure, it takes several computational experiments to generate simulation results, which show efficiency and effectiveness of the proposed MIMO U-model based control system design.