Robust nonlinear observer design for actuator fault detection in diesel engines

• Autorzy: Boulaid Boulkroune , Issam Djemili , Abdel Aitouche , Vincent Cocquempot
• Języki publikacji: EN

Abstrakty

EN

This paper is concerned with actuator fault detection in nonlinear systems in the presence of disturbances. A nonlinear unknown input observer is designed and the output estimation error is used as a residual for fault detection. To deal with the problem of high Lipschitz constants, a modified mean-value theorem is used to express the nonlinear error dynamics as a convex combination of known matrices with time-varying coefficients. Moreover, the disturbance attenuation is performed using a modified $H_∞$ criterion. A sufficient condition for the existence of an unknown input observer is obtained using a linear matrix inequality formula, and the observer gains are obtained by solving the corresponding set of inequalities. The advantages of the proposed method are that no a priori assumption on the unknown input is required and that it can be applied to a large class of nonlinear systems. Performances of the proposed approach are shown through the application to a diesel engine model.

Słowa kluczowe

EN

diesel engine; fault diagnosis; nonlinear unknown input observers; LMI

• Wydawca: University of Zielona Gora Press
• Czasopismo: International Journal of Applied Mathematics and Computer Science
• Rocznik: 2013
• Tom: 23
• Numer: 3
• Strony: 557-569

Daty

wydano

2013

otrzymano

2012-04-18

poprawiono

2013-01-21

poprawiono

2013-04-08

Twórcy

autor

Boulaid Boulkroune

• HEI, Engineer School, 13, rue de Toul, 59046, Lille, France
• Automatic Control Laboratory (LAGIS), Lille 1 University, Rue Paul Langevin, 59655, Villeneuve d'Ascq, France

autor

Issam Djemili

• HEI, Engineer School, 13, rue de Toul, 59046, Lille, France
• Automatic Control Laboratory (LAGIS), Lille 1 University, Rue Paul Langevin, 59655, Villeneuve d'Ascq, France

autor

Abdel Aitouche

• HEI, Engineer School, 13, rue de Toul, 59046, Lille, France
• Automatic Control Laboratory (LAGIS), Lille 1 University, Rue Paul Langevin, 59655, Villeneuve d'Ascq, France

autor

Vincent Cocquempot

• Automatic Control Laboratory (LAGIS), Lille 1 University, Rue Paul Langevin, 59655, Villeneuve d'Ascq, France

Bibliografia

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Identyfikatory

DOI

10.2478/amcs-2013-0042