Fault tolerant in descriptor linear systems via generalized proportional-integral regulator/observer

Damien Koenig (1) , Said Mammar (2)

1 LAG - Laboratoire d'automatique de Grenoble
2 LIVIC - Laboratoire sur les Interactions Véhicules-Infrastructure-Conducteurs

This paper presents a new and simple method to design a full Regulator/Observer for linear timeinvariant (LTI) descriptor systems subject to unknown inputs (UI). Based on the proportional integral (PI) observer approach developed by [9], a new disturbance accommodation using a feedback of estimated state and disturbance in LTI descriptor systems is investigated. Necessary and sufficient conditions for the existence of the Regulator/PI-Observer are given and contrarily at [7] the UI decoupled condition is not needed. An illustrative example is included.

Domaines: Automatique

Damien Koenig, Said Mammar. Fault tolerant in descriptor linear systems via generalized proportional-integral regulator/observer. IEEE American Control Conference, 2003, Denver, United States. pp.CDROM. ⟨hal-00232848⟩