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2013-05-24 - Colloque/Présentation - poster - Anglais - 1 page(s)

Araujo Pimentel Guilherme , Benavides Castro Micaela , Retamal Cristina , Dewasme Laurent , Vande Wouwer Alain , Coutinho Daniel, "Robust Partial Feedback Linearizing Control of Bioreactor in Fed-Batch Mode" in IAP DYSCO Study Day : Dynamical systems, control and optimization, Mons, Belgium, 2013

  • Codes CREF : Sciences de l'ingénieur (DI2000), Automatisme et régulation (DI2150), Automatique (DI2530)
  • Unités de recherche UMONS : Automatique (F107)
  • Instituts UMONS : Institut des Biosciences (Biosciences)
  • Centres UMONS : Biosys (BIOSYS)
Texte intégral :

Abstract(s) :

(Anglais) A methodology for robust control design of fed-batch bioreactors is proposed. This study aims to maximize the production of Escherichia Coli, which is the most employed microorganism in biotechnological industry. The model’s parameters have been identified from real fed-batch trails. From this model an observer for the states that cannot be measured and a control law that holds the by-product concentration in small levels (i.e., close to zero) have been developed. To compute the controller gain the nonlinear dynamics of the bioreactor is rewritten in terms of time-varying parameters (quasi-LPV approach) in order to apply the linear matrix inequality framework for designing the free dynamics resulting from a partial feedback linearizing strategy. The proposed design conditions provide the robust stability of the closed-loop system while ensuring some performance w.r.t. disturbance signals.