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NONLINEAR OBSERVERS FOR STATE AND PARAMETER ESTIMATION IN BIOCHEMICAL PROCESSES
M. Nadri** M. Farza* H. Hammouri** M. Fick***
* Laboratoire d’Automatique de Procédés E.A. 2611, L.A.P., I.S.M.R.A.,
Université de Caen, 6, Boulevard Maréchal Juin, F-14050 CAEN
cedex, France, mfarza@greyc.ismra.fr
** Laboratoire d’Automatique et de Génie des Procédés, UMR 5007,
LAGEP, UCBL I, CPE-Lyon, Bat. 308G, 69622 Villeurbanne cedex,
France.
*** Laboratoire des Sciences du Génie Chimique, ENSAIA-CNRS, 3
avenue de la Forêt de Haye-B.P. 172, 54502 Vandoeuvre-Les-Nancy
Cedex, France.
A systematic approach for the on-line estimation of the non measured component concentrations and the reaction rates inside chemical and biochemical reactors is presented. Two appealing features of the presented approach are worth to be mentioned. Firstly, the estimators of the reaction rates are easy to implement and in particular to calibrate. Secondly, the estimation of these as well as that of the non measured component concentrations does not necessitate any change of coordinates and it fully takes advantage of the process balance model. Simulation results related to a biotechnological process are given in order to illustrate the performances of the proposed estimators.
Keywords: nonlinear observer, modelling, estimation, chemical reactor, bioprocess
Session slot T-Mo-A09: Observer Design for Bioprocesses/Area code 7d : Control of Biotechnological Processes
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