Improvement of Linear Algebra Controllers using Sliding Surface Concepts: Applications to Chemical Processes

Authors

Keywords:

FOPDT model, linear algebra, sliding surface, uncertainty

Abstract

This work presents a novel control technique that combines concepts of Sliding Surface with a Linear Algebra methodology for controller design. The result is a controller with an improved robustness, while the chattering effect attributed to great uncertainties is avoided. A First Order Plus Dead Time (FOPDT) model of the process is used to develop a controller based on Linear Algebra and the concept of sliding surface is used to improve its performance under uncertainties. An interesting feature of this new controller is its ability to follow variable references without overshoot, a highly desirable characteristic for most process systems, and avoids the chattering problem. Results of the control of a CSTR and a laboratory batch reactor using this novel technique are presented. Simulated and experimental results demonstrate the outstanding performance of this new control algorithm. 

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Author Biographies

María Fabiana Sardella, Universidad Nacional de San Juan

María Fabiana Sardella received a bachelor in Chemical Engeneering from Universidad Nacional de San Juan in 1996. She graduated as Msc in Environmental Technologies in 2004 and she is now finishing doctoral studies at Universidad Nacional de San Juan. She is professor at Universidad Nacional de San Juan since 2003. Her main research interests are in the field of Agroindustrial Residues Valorisation, Porous Solids and Process Control.

Emanuel Serrano, Instituto de Ingeniería Química, CONICET, Universidad Nacional de San Juan.

Mario Emanuel Serrano received the Ing. degree in Electronic Engineering with orientation in Control Systems from the National University of San Juan, Argentina and the Ph.D in Control Systems from the Institute of Automatic Control at the Instituto de Automática, Argentina. He is a scientific researcher at CONICET and works at Instituto de Ingeniería Química from Universidad Nacional de San Juan. His main research interests are Robotic Systems, Process Control, Linear Algebra based Methods and Nonlinear and Adaptive Control Theory.

Oscar Camacho, Departamento de Automatización y Control Industrial, Escuela Politécnica Nacional.

Oscar Camacho received a bachelor in Electrical Engineer from Universidad de Los Andes (ULA), Mérida, Venezuela, in 1984. He received the MSc. Control Engineering in 1992 (ULA). In 1994 he got a ME in Chemical Engineering and, in 1996, a Ph.D., both at the University of South Florida (USF). Postdoctoral development activities at USF in 2001. He has held teaching and research in the ULA and PDVSA (Venezuela), USF (USA), and actually at Escuela Politécnica Nacional (Ecuador). He was Director of the School of Electrical Engineering, Coordinator of the Master Program in Automation and Instrumentation, Dean of the Engineering Faculty at ULA, from 2005 until 2014. He is an Associate Editor of the Journal ISA Transactions. His current research interests include sliding mode control, process control systems with long delay, chemical process control.

Gustavo Scaglia, Instituto de Ingeniería Química, CONICET, Universidad Nacional de San Juan.

Gustavo Scaglia received the Ing. degree in Electronic Engineering with orientation in Control Systems from the National University of San Juan, Argentina, in 1999, and the Ph.D in Control Systems from the Institute of Automatic Control at the Instituto de Automática, Argentina in 2006, his work was about a new tracking trajectories algorithms. He is a Research Fellow of the Council for Scientific and Technological Research, Argentina, since 2011. He leads different technological projects and his current scientific research at the Engineering Chemical Institute from National University of San Juan. His main interests are algorithms for tracking trajectories, nonlinear and adaptive control theory, and mechanical and chemical process.

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Published

2021-03-19

How to Cite

Sardella, M. F., Serrano, E., Camacho, O., & Scaglia, G. (2021). Improvement of Linear Algebra Controllers using Sliding Surface Concepts: Applications to Chemical Processes. IEEE Latin America Transactions, 19(8), 1299–1306. Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/4458

Issue

Vol. 19 No. 8 (2021): Ordinary Issue

Section

Articles