Title: Dynamic sliding mode controller applied to a temperature TITO process

Authors: Mónica Contreras; Marco Herrera; Paulo Leica; Oscar Camacho

Addresses: Departamento de Automatización y Control Industrial, Escuela Politénica Nacional, Quito, 170517, Ecuador ' Departamento de Automatización y Control Industrial, Escuela Politénica Nacional, Quito, 170517, Ecuador ' Departamento de Automatización y Control Industrial, Escuela Politénica Nacional, Quito, 170517, Ecuador ' Colegio de Ciencias e Ingenierías 'El Politécnico', Universidad San Francisco de Quito USFQ, Quito 170157, Ecuador

Abstract: The purpose of this paper is to develop a dynamic sliding mode control (DSMC) for a two-input two-output (TITO) temperature system. First, the interaction between variables is analysed using the relative gains matrix (RGA) and the Bristol criterion to design a decoupler scheme. After that, a DSMC control scheme for the TITO system is then proposed using a decoupler; in addition, the proposed controller is tuned using the mean-variance mapping optimisation (MVMO) method. Next, experimental tests of reference changes, parametric uncertainties, and experimental disturbances are performed on the Temperature Control Lab (TCLab). Finally, the performance of the proposed controller is compared against a PI controller and an SMC using TVu, ISE, and IAE performance indices, where it is shown that the proposed controller can reduce the chattering effect for the TITO system.

Keywords: dynamic sliding mode control; DSMC; TITO process.

DOI: 10.1504/IJAAC.2023.129390

International Journal of Automation and Control, 2023 Vol.17 No.2, pp.227 - 248

Received: 16 Jul 2021
Accepted: 22 Feb 2022
Published online: 07 Mar 2023 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article