Observer design for a class of nonlinear systems with stability discussion: Application to fault diagnosis

1999 ◽  
Author(s):  
G. Schreier ◽  
F. Kratz ◽  
P.M. Frank
Keyword(s):  
Fault Diagnosis ◽  
Nonlinear Systems ◽  
Observer Design

A new robust observer design for nonlinear systems with application to fault diagnosis

2017 ◽  
Vol 40 (13) ◽  
pp. 3696-3708 ◽  
Author(s):  
Ammar Zemzemi ◽  
Mohamed Kamel ◽  
Ahmed Toumi ◽  
Mondher Farza
Keyword(s):  
Fault Diagnosis ◽  
Nonlinear Systems ◽  
Sliding Mode ◽  
Nonlinear Function ◽  
Design Procedure ◽  
Observer Design ◽  
Linear Matrix ◽  
Time Varying ◽  
System Nonlinearity ◽  
The Stability

This paper presents a robust fault diagnosis scheme for a class of uncertain nonlinear systems whose nonlinear function satisfies the Lipschitz condition with unmatched time-varying uncertainties, external disturbances and perturbed output. The design procedure combines the high robustness of the nonlinear unknown input observer with sliding-mode techniques in order to enhance the estimation qualities. The proposed design is derived and expressed as a linear matrix inequality optimization problem. Additionally, we have provided an approach to reduce conservatism in the derivation of the stability conditions. The effectiveness of this observer and the fault diagnosis scheme are shown by applying them to a single-link manipulator. Simulation results are presented to validate the proposed approach and show the robustness for the system nonlinearity and unmatched time-varying uncertainties.

Discussion on: Sensor Gain Fault Diagnosis for a Class of Nonlinear Systems

2006 ◽  
Vol 12 (5) ◽  
pp. 536-544 ◽  
Author(s):  
Hassan Noura ◽  
Abbas Chamseddine
Keyword(s):  
Fault Diagnosis ◽  
Nonlinear Systems ◽  
Sensor Gain

Hyperbolic observer design for a class of nonlinear systems

2021 ◽  
Vol 145 ◽  
pp. 110785
Author(s):  
Majid Parvizian ◽  
Khosro Khandani
Keyword(s):  
Nonlinear Systems ◽  
Observer Design

scholarly journals Fault diagnosis for Takagi-Sugeno nonlinear systems

2009 ◽  
Vol 42 (8) ◽  
pp. 504-509 ◽  
Author(s):  
Dalil Ichalal ◽  
Benoit Marx ◽  
José Ragot ◽  
Didier Maquin
Keyword(s):  
Fault Diagnosis ◽  
Nonlinear Systems ◽  
Takagi Sugeno
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