Original scientific paper

https://doi.org/10.21278/TOF.452022220

A Discrete-Time Sliding Mode Controller for the Fermentation Process

Olivera Iskrenovic-Momcilovic ; University of Novi Sad, Faculty of Education, Sombor, Serbia

Abstract

This paper proposes a discrete-time sliding mode controller for the fermentation process, which is adequately approximated by the first-order plus dead time model. The contribution of the paper is an investigation into the suitable approximation of the time delay for discrete-time sliding mode controller. The dead time is considered in two ways by the first-order Taylor series approximation and the first-order Pade approximation. In the first case, the discrete-time sliding mode controller is based on the integral compensation of an output error, and in the second case, the stable system centre method is used. Numerical simulation examples of the yeast fermentation process are given to show the effectiveness of these two methods.

Keywords

discrete-time controller; first-order Pade approximation; first-order Taylor series approximation; fermentation process; sliding mode control

Hrčak ID:

260398

URI

https://hrcak.srce.hr/260398

Publication date:

9.7.2021.

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