Titre :

Hybrid Bond Graphs for Diagnosis of Three Cells Converter

Auteur(s) :

Uzunova, Milka [Auteur]
Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201 [LAMIH]
Djemai, Mohamed [Auteur]
Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201 [LAMIH]
Ould Bouamama, Belkacem [Auteur]
LAGIS-MOCIS

Titre de la manifestation scientifique :

8th IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes

Ville :

Mexico City

Pays :

Mexique

Date de début de la manifestation scientifique :

2012-09-01

Date de publication :

2012

Mot(s)-clé(s) en anglais :

Analytical redundancy relation
Diagnosis
Dynamic hybrid system
Fault signature matrix
Hybrid bond graph
Multicellular converter

Discipline(s) HAL :

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

Résumé en anglais : [en]

Bond Graph as a unified and multidisciplinary tool, stay very interesting regarding the interaction between different continuous modes. These industrial systems, having more than one continuous state, need hybrid tehniques ...
Lire la suite >Bond Graph as a unified and multidisciplinary tool, stay very interesting regarding the interaction between different continuous modes. These industrial systems, having more than one continuous state, need hybrid tehniques for their model based diagnosis. Traditional Bond Graph algorithms for continuous diagnosis use a single model that does not accommodate the transition between modes. The physical system is converter containing three pairs of switches (cells), leading to eight modes. The aim of the paper is to show how the hybrid bond graph (HBG) can be used not only for dynamic modelling of all modes but also the fault Detection and isolation. Based on structural and causal properties of the HBG, the fault indicator named Global Analytical Redundancy Relation (GARR) is generated systematically for all modes. The Fault Signature Matrix is then deduced from candidate GARRs for decision procedure step. The first part of this work considered to obtain a hybrid model, who allows to present different modes in one structure. The changes in the causalities only on level of the switching junctions when the mode changes occur was observed. Our work is motivated by the requirements of the fault accommodation tasks, where diagnosis is performed online for the hybrid system. This model of the residuals and the related fault signature matrix can be implemented in real time applications to provide a decision support system including both the fault detection and isolation capabilities.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

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

Source :

Harvested from HAL