On the unknown input observer design : a decoupling class approach

Souad Bezzaoucha (1) , Benoît Marx (1) , Didier Maquin (1) , José Ragot (1)

1 CRAN - Centre de Recherche en Automatique de Nancy

This paper deals with state estimation for linear discrete-time systems subject to unknown input. Although many papers have dealt with the problem of Unknown Input Observer design, state decoupling and reconstruction ; the goal is to present a new method allowing to characterize a class of unknown inputs to which the estimation error is decoupled. This contribution considers two problems : exact decoupling and L2-attenuation of the unknown input to the state estimation error.

Domaines: Automatique; Automatique / Robotique

Souad Bezzaoucha, Benoît Marx, Didier Maquin, José Ragot. On the unknown input observer design : a decoupling class approach. 9th IEEE International Conference on Control & Automation, ICCA'11, Dec 2011, Santiago, Chile. pp.602-607, ⟨10.1109/ICCA.2011.6138035⟩. ⟨hal-00630362⟩