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Article

Simple Gain-Scheduled Control System for Dissolved Oxygen Control in Bioreactors

Department of Automation, Kaunas University of Technology, LT-51367 Kaunas, Lithuania
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Author to whom correspondence should be addressed.
Academic Editors: Philippe Bogaerts and Alain Vande Wouwer
Received: 2 July 2021 / Revised: 15 August 2021 / Accepted: 21 August 2021 / Published: 25 August 2021
(This article belongs to the Special Issue Mathematical Modeling and Control of Bioprocesses)
An adaptive control system for the set-point control and disturbance rejection of biotechnological-process parameters is presented. The gain scheduling of PID (PI) controller parameters is based on only controller input/output signals and does not require additional measurement of process variables for controller-parameter adaptation. Realization of the proposed system does not depend on the instrumentation-level of the bioreactor and is, therefore, attractive for practical application. A simple gain-scheduling algorithm is developed, using tendency models of the controlled process. Dissolved oxygen concentration was controlled using the developed control system. The biotechnological process was simulated in fed-batch operating mode, under extreme operating conditions (the oxygen uptake-rate’s rapidly and widely varying, feeding and aeration rate disturbances). In the simulation experiments, the gain-scheduled controller demonstrated robust behavior and outperformed the compared conventional PI controller with fixed parameters. View Full-Text
Keywords: PID (PI) control; gain-scheduling; mathematical model; biotechnological cultivation process; dissolved oxygen concentration PID (PI) control; gain-scheduling; mathematical model; biotechnological cultivation process; dissolved oxygen concentration
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MDPI and ACS Style

Butkus, M.; Levišauskas, D.; Galvanauskas, V. Simple Gain-Scheduled Control System for Dissolved Oxygen Control in Bioreactors. Processes 2021, 9, 1493. https://0-doi-org.brum.beds.ac.uk/10.3390/pr9091493

AMA Style

Butkus M, Levišauskas D, Galvanauskas V. Simple Gain-Scheduled Control System for Dissolved Oxygen Control in Bioreactors. Processes. 2021; 9(9):1493. https://0-doi-org.brum.beds.ac.uk/10.3390/pr9091493

Chicago/Turabian Style

Butkus, Mantas, Donatas Levišauskas, and Vytautas Galvanauskas. 2021. "Simple Gain-Scheduled Control System for Dissolved Oxygen Control in Bioreactors" Processes 9, no. 9: 1493. https://0-doi-org.brum.beds.ac.uk/10.3390/pr9091493

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