Title :
Fault estimation using algebraic observers
Author :
Guerra, Rafael Martínez ; Luviano-Juárez, Alberto ; Rincón-Pasaye, José Juan
Author_Institution :
CINVESTAV, Mexico
Abstract :
A model free nonlinear observer based upon algebraic observability condition is used in the fault estimation problem of nonlinear systems. A diagnosis criterion based on the differential transcendence degree of a differential field extension is employed. Two systems with fault presence are analyzed. Faults are estimated with this observer. Some numerical results are shown to illustrate this methodology and finally, some concluding remarks are given.
Keywords :
algebra; fault diagnosis; nonlinear control systems; observers; algebraic observers; differential field extension; differential transcendence degree; fault diagnosis; fault estimation; model free nonlinear observer; nonlinear systems; Algebra; Cities and towns; Differential equations; Fault diagnosis; Nonlinear control systems; Nonlinear equations; Nonlinear systems; Observability; Polynomials; Solid modeling; Fault diagnosis problem; algebraic observer; nonlinear systems;
Conference_Titel :
American Control Conference, 2007. ACC '07
Conference_Location :
New York, NY
Print_ISBN :
1-4244-0988-8
Electronic_ISBN :
0743-1619
DOI :
10.1109/ACC.2007.4282951
