Title: U-model enhanced MIMO decoupling control of thickness and plate type of cold rolling temper mill
Authors: Pengwei Li; Weicun Zhang
Addresses: Institute of Engineering Technology, University of Science and Technology Beijing, Beijing 10083, China; School of Electrical and Information Engineering, Beihua University, Jilin, 132021, China ' School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing 100083, China
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.
Keywords: cold rolling temper mill; plate type; plate thickness; U-model; U-control; model independent control system design.
International Journal of Modelling, Identification and Control, 2019 Vol.33 No.3, pp.189 - 197
Received: 20 May 2019
Accepted: 20 May 2019
Published online: 18 Mar 2020 *