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INTERVAL OBSERVERS FOR INTERCONNECTED BIOTECHNOLOGICAL SYSTEMS
J. Harmand1, A. Rapaport2
1 Laboratoire de Biotechnologie de l’Environnement,
INRA, Avenue des étangs, 11100 Narbonne, France.
e-mail: harmand@ensam.inra.fr
Tel: +33 (0) 468.425.159, Fax: +33 (0) 468.425.160
2 Laboratoire d’Analyse des Systèmes et Biométrie
INRA, 2, Place Viala, 34000 Montpellier, France.
e-mail: rapaport@ensam.inra.fr
Tel: +33 (0) 499.612.652, Fax: +33 (0) 467.521.427
In this paper, the design of interval observers for the estimation of biomass concentrations in complex biotechnological systems (interconnected biological systems) is described. In particular, the design of such observers for tanks in cascade (including a recirculation) is considered. The design procedure as well as a sufficient condition for the stability of the observer are established. The proposed approach is robust with respect to unknown kinetics and bounded disturbances on the inputs.
Keywords: cascade of bioreactors, estimation, unknown inputs, interval observers
Session slot T-Mo-A09: Observer Design for Bioprocesses/Area code 7d : Control of Biotechnological Processes
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