Title: A real time application of discrete second order sliding mode control to a semi-batch reactor: a multimodel approach

Authors: Mohamed Mihoub, Ahmed Said Nouri, Ridha Ben Abdennour

Addresses: Ecole Nationale d'Ingenieurs de Gabes, 6029 Gabes, Tunisia. ' Ecole Nationale d'Ingenieurs de Gabes, 6029 Gabes, Tunisia. ' Ecole Nationale d'Ingenieurs de Gabes, 6029 Gabes, Tunisia

Abstract: The esterification reaction requires a tight temperature control. As the different stages of this reaction (the heating, the reaction and the cooling) are characterised by different dynamics, a discrete second order sliding mode control using one global model of the system was not able to ensure the desired performances. We propose, in this paper, an application of the multimodel approach for the discrete second order sliding mode control. Experimental results on the reactor show better control performances both at tracking and disturbance rejection relative to the case where the conventional discrete second order sliding mode control is applied.

Keywords: discrete second order sliding mode; multimodel approach; real time control; semi-batch reactors; sliding mode control; esterification reaction.

DOI: 10.1504/IJMIC.2009.024332

International Journal of Modelling, Identification and Control, 2009 Vol.6 No.2, pp.156 - 163

Available online: 31 Mar 2009 *

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