Title :

Fast Adaptive Fault Estimation and Accommodation for Nonlinear Time-varying Delay Systems

Author(s) :

Zhang, Ke [Auteur]
Jiang, Bin [Auteur]
Cocquempot, Vincent [Auteur]
Systèmes Tolérants aux Fautes [STF]

Journal title :

Asian Journal of Control

Pages :

643-652

Publisher :

Asian Control Association (ACA) and Chinese Automatic Control Society (CACS)

Publication date :

2009-11-01

ISSN :

1561-8625

English keyword(s) :

Fault estimation
fault accommodation
adaptive fault diagnosis observer
time-delay systems
delay-dependent criteria
linear matrix inequality

HAL domain(s) :

Sciences de l'ingénieur [physics]/Automatique / Robotique

English abstract : [en]

his paper studies the problem of fault estimation and accommodation for a class of nonlinear time-varying delay systems using adaptive fault diagnosis observer (AFDO). A novel fast adaptive fault estimation algorithm that ...
Show more >his paper studies the problem of fault estimation and accommodation for a class of nonlinear time-varying delay systems using adaptive fault diagnosis observer (AFDO). A novel fast adaptive fault estimation algorithm that does not need the derivative of the output vector is proposed to enhance the performance of fault estimation. Meanwhile, a delay-dependent criteria is obtained based on free weighting matrix method with the purpose of reducing the conservatism of the AFDO design. On the basis of fault estimation, an observer-based fault-tolerant controller is designed to guarantee the stability of the closed-loop system. In terms of matrix inequality, we derive sufficient conditions for the existence of the adaptive observer and fault-tolerant controller. Simulation results are presented to illustrate the efficiency of the proposed method.Show less >

Language :

Anglais

Popular science :

Non

Collections :

• Centre de Recherche en Informatique, Signal et Automatique de Lille (CRIStAL) - UMR 9189

Source :

Harvested from HAL