Unknown inputs observers for a class of nonlinear systems

Mondher Farza (1) , Moncef Triki (2, 3) , Mohammed M'Saad (1) , Boutaib Dahhou (4)

1 Equipe Automatique - Laboratoire GREYC - UMR6072
2 GREYC - Groupe de Recherche en Informatique, Image et Instrumentation de Caen
3 CEM Lab - ENIS - Département de Génie Électrique de Sfax [ENIS]
4 LAAS-DISCO - Équipe DIagnostic, Supervision et COnduite

A high gain observer is proposed for a class of multi-output nonlinear systems with unknown inputs in order to simultaneously estiamte the whole state as well as the unknow inputs. The gain of this observer does not require the resolution of any dyamical system and is explicitly given. Moreover, its tuning is reduced to the choice of two real numbers. The performances of the proposed observer are demonstrated in simulation throuht an illustrative example.

Mots clés: nonlinear system; high gain observer; unknown inputs

Domaines: Automatique; Automatique / Robotique

Mondher Farza, Moncef Triki, Mohammed M'Saad, Boutaib Dahhou. Unknown inputs observers for a class of nonlinear systems. 10th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering, Dec 2009, Hammamet, Tunisia. 12p. ⟨hal-01057496⟩