Service d’Automatique, Boulevard Dolez 31, 7000 Mons

Extremum seeking control of micro-algal cultures

Jean-Sebastien Deschênes (University of Quebec at Rimouski)


Service d’Automatique, Boulevard Dolez 31, 7000 Mons

An introduction to model predictive control

Lino Santos (University of Coimbra)


Service d’Automatique, Boulevard Dolez 31, 7000 Mons

Bioreaction rate estimation using a super-twisting observer during toxic wastewater treatment.

In the control of certain reactive systems such as bioreactors it is useful to know the reaction rate on-line. However, sensors have not been developed for this purpose and thus it is of interest to build a software sensor or observer to estimate its value using the information provided by other measurements. In this work, a supaer-twisting observer is used to estimate the reaction rate in a fed-batch bioreactor used to treat toxic wastewater using only measurements of the dissolved oxygen concentration. The robustness of the designed observer with respect to some uncertainties is exploited to also consider the dynamics of the sensor. The observer is tested via numerical simulations and in closed loop with a controller that aims at keeping the bioreaction rate at its maximum for the most time during the reaction.  

Alejandro Vargas (UNAM, Juriquilla, Mexico - in sabbatical stay at UMONS)




Service d’Automatique, Boulevard Dolez 31, 7000 Mons

Improving a PHA production process using a simple process controller

Polyhydroxyalkanoates (PHAs) are biodegradable polymers that may accumulate as granules in many types of bacteria when fed appropriately with certain substrates such as high strength wastewater. They have gained attention recently because they can be harvested to be used as renewable biodegradable plastics. This work presents the use of process control techniques to enhance the production of PHA from organic wastewater in a two bioreactor laboratory scale system. Sludge from a conventional wastewater treatment plant is first enriched in a sequencing batch reactor (SBR) under aerobic dynamic feeding, while a second fed-batch reactor inoculated with the excess biomass from the SBR is used for PHA cultivation. The controller provides pulses of substrate periodically to this reactor, according to a continually updated simple dynamic mathematical model of the process. Experimental results show the advantages of the approach with respect to other strategies.

Alejandro Vargas (UNAM, Juriquilla, Mexico - in sabbatical stay at UMONS)




Service d’Automatique, Boulevard Dolez 31, 7000 Mons

In the framework of the Graduate schools SOCN and GEPROC : Robust Control: A LMI Based Perspective (with Applications to Bioprocesses)

Prof. Daniel Coutinho, Federal University of Santa Catarina, Brazil

The course aims at providing an introduction to the robust control paradigm for stability and performance analysis, and control synthesis for dynamical systems based on the linear matrix inequality (LMI) framework. To this end, the course is organized in four modules which can be separately attended depending on background knowledge of the students on the theory of dynamical systems.

Link : A_Course_on_Robust_Control_with_Applications_to_Bioprocesses.doc


2012.10.03 and 2012.10.04


Service d'Automatique, Boulevard Dolez 31, 7000 Mons

Model Predictive Control: basic concepts and formulations

Prof. Lino Santos, University of Coimbra

Model predictive control (MPC) has received great attention since the report on its successful industrial applications in the end of the 70s. There is nowadays a rich literature on MPC technology, its formulations, algorithms, and properties, with examples of applications in various domains, from small to large scale systems. In these seminars we will focus on the application of MPC to chemical processes. First, the basic concepts and a linear formulation are presented. Then the extension to nonlinear formulations based on first principle models is discussed and illustrated with simulated and experimental process examples. Finally, a brief overview focusing on recent research works in the domain of nonlinear MPC will be given.




"An LMI Course on Robust Control"

Daniel Coutinho


"Introduction a la commande robuste et aux problemes de saturation d'actionneurs"

Isabelle Queinnec (LAAS-CNRS, Toulouse)




" Introduction à la bioinformatique"

Dimitri Gilis (Bioinformatique génomique et structurale - Service de chimie générale et biosystèmes, ULB)




"Introduction à l'épuration biologiques des eaux usées - capteurs et applications"

Jean-Luc Vasel (Département des sciences et gestion de l'environnement, ULG)




"Commande des bioprocédés"

Denis Dochain, CESAME, UCL




"Les modèles d'écosystèmes (aquatiques): outils de connaissance et de gestion"

Christiane Lancelot (Faculté des Sciences, ULB)




"Introduction à l'épuration biologiques des eaux usées - capteurs et applications"

Jean-Luc Vasel (Dépatement des sciences et gestion de l'environnement de l'ULG)