Title :
Fault tolerant in descriptor linear systems via generalized proportional-integral regulator/observer
Author :
Koenig, D. ; Mammar, S.
Author_Institution :
Lab. d´´Automatique de Grenoble, UMR CNRS-INPG-UJF, Saint Martin d´´Heres, France
Abstract :
This paper presents a new and simple method to design a full regulator/observer for linear-time invariant (LTI) descriptor systems subject to unknown inputs (UI). Based on the proportional integral (PI) observer approach developed by (D. Koenig et al., Nov. 2002), a new disturbance accommodation using a feedback of estimated state and disturbance in LTI descriptor system is investigated. Necessary and sufficient conditions for the existence of the regulator/PI-observer are given and contrarily at (M. Darouach et al., 1987) the UI decoupled condition is not needed. An illustrative example is included.
Keywords :
PI control; controllers; fault tolerant computing; linear systems; state feedback; LTI descriptor system; UI decoupled condition; descriptor linear system; disturbance accommodation; disturbance feedback; estimated state; fault tolerant systems; generalized proportional-integral regulator-observer; proportional integral observer approach; regulator-PI-observer; Control systems; Design methodology; Fault tolerant systems; Linear systems; Observers; Regulators; Stability; State estimation; State feedback; State-space methods;
Conference_Titel :
American Control Conference, 2003. Proceedings of the 2003
Print_ISBN :
0-7803-7896-2
DOI :
10.1109/ACC.2003.1242534
