State estimation for wastewater treatment plant with slow and fast dynamics using multiple models

Anca Maria Nagy (1) , Benoît Marx (1) , Gilles Mourot (1) , Georges Schutz (2) , José Ragot (1)

1 CRAN - Centre de Recherche en Automatique de Nancy
2 LTI - Laboratoire des Technologies Industrielles et Matériaux

This paper addresses the state estimation of twotime scale nonlinear systems by designing an unknown input multi-observer (UIMO). In order to design such an observer, the nonlinear system is transformed into an equivalent multiple model form and the fast dynamics are considered as unknown inputs. An application to a model of Wastewater Treatment Plants (WWTP) is considered and gives encouraging results

Domaines: Automatique / Robotique

Anca Maria Nagy, Benoît Marx, Gilles Mourot, Georges Schutz, José Ragot. State estimation for wastewater treatment plant with slow and fast dynamics using multiple models. 18th Mediterranean Conference on Control and Automation, MED'10, Jun 2010, Marrakech, Morocco. pp.CDROM. ⟨hal-00499321⟩