A STUDY ON THE CONVERGENCE OF OBSERVER-BASED KINETICS ESTIMATORS IN STIRRED-TANK BIOREACTORS

This paper is devoted to the tuning problem of an observer-based algor ithm for the on-line estimation of reaction rates in stirred tank bior eactors. The relation between the dynamics of convergence and the tuni ng procedure is explored. The method proposed imposes a variable secon d-order dynamics on the convergence of the estimator. This approach is shown to compare favourably with a pole placement based technique, in an application to a baker's yeast fed-batch fermentation. Copyright ( C) 1996 Published by Elsevier Science Ltd