Journal ArticleDOI
Simple nonlinear observers for on-line estimation of kinetic rates in bioreactors
TLDR
In this paper, the authors propose a global theoretical framework for the analysis of bioreactor dynamics, which uses technical tools issued from the nonlinear systems theory, which allow the design of observer-based estimators.About:
This article is published in Automatica.The article was published on 1998-03-01. It has received 175 citations till now. The article focuses on the topics: Estimator.read more
Citations
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Journal ArticleDOI
Observer design for a class of MIMO nonlinear systems
TL;DR: A simple observer is proposed for a large class of MIMO nonlinear systems which includes many physical models and its calibration is achieved through the choice of a single parameter.
Journal ArticleDOI
Nonlinear adaptive control for bioreactors with unknown kinetics
TL;DR: In this article, a control problem for a single bioreaction occurring in a continuous and well-mixed bioreactor is considered, and a nonlinear controller is developed and proved the global asymptotic stability of the closed-loop system towards the equilibrium corresponding to the set point.
Journal ArticleDOI
A hybrid artificial neural network as a software sensor for optimal control of a wastewater treatment process.
Dong-Jin Choi,Heekyung Park +1 more
TL;DR: The result shows that the hybrid ANN technique can be used to extract information from noisy data and to describe the nonlinearity of complex wastewater treatment processes.
Journal ArticleDOI
Optimal Operation of Fed-Batch Fermentations via Adaptive Control of Overflow Metabolite
Sergio Valentinotti,Bala Srinivasan,Ulf Holmberg,Dominique Bonvin,Christopher Cannizzaro,Martin Rhiel,U. von Stockar +6 more
TL;DR: In this paper, an adaptive control methodology based on the internal model principle is used to maintain the desired ethanol setpoint and reject the perturbation, for which a single parameter needs to be estimated on-line.
Journal ArticleDOI
Continuous-Discrete Time Observers for a Class of MIMO Nonlinear Systems
TL;DR: This technical note addresses the observer design problem for a class of continuous-time dynamical systems with non-uniformly sampled measurements by proposing an observer that runs in continuous- time with an output error correction term that is updated in a mixed continuous-discrete fashion.
References
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Journal ArticleDOI
A simple observer for nonlinear systems applications to bioreactors
TL;DR: In this paper, an observer for nonlinear systems is constructed under rather general technical assumptions (the fact that some functions are globally Lipschitz) and a tentative application to biological systems is described.
Journal ArticleDOI
High gain estimation for nonlinear systems
TL;DR: In this paper, a high gain exponential observer for MISO nonlinear systems affine in the input and observable for any input with continuous dynamics and measurements is presented, and stability results for continuous-continuous and continuous-discrete extended Kalman filters derived from the observer of the observer are established.
Proceedings ArticleDOI
A high gain observer for a class of uniformly observable systems
G. Bornard,Hassan Hammouri +1 more
TL;DR: It is shown that, under structure assumptions made on the second part, arbitrary nonlinearities can be dealt with through a high-gain approach and the system is uniformly observable, i.e. observable for every input.
Book ChapterDOI
Regularly persistent observers for bilinear systems
G. Bornard,N. Couenne,F. Celle +2 more
TL;DR: This paper deals with the problem of synthesis of observers for bilinear systems working for the class of regularly persistent inputs and shows how this result is related to the Kalman observer for time-varying linear systems.
Journal ArticleDOI
On-line estimation of microbial specific growth rates
TL;DR: Continuous time algorithms for the on-line estimation of microbial specific growth rates of fermentation processes are proposed and the stability and convergence properties of the algorithms are described and their feasibility is illustrated by real life experiments.