Mixed approach for fault diagnosis and fault location of hybrid systems

被引：2

作者：

Maaref, B. ^{[1
]}

Abazi, Z. Simeu ^{[2
]}

Dhouibi, H. ^{[1
]}

Messaoud, H. ^{[1
]}

Gascard, E. ^{[2
]}

机构：

[1] Natl Engn Sch Monastir, LARATSI, Monastir, Tunisia

[2] UJF Grenoble 1, CNRS, G SCOP, Grenoble INP, Grenoble, France

来源：

IFAC PAPERSONLINE | 2016年 / 49卷 / 12期

关键词：

Fault Diagnosis; Hybrid Systems; Bond Graph; Observer; Timed Automata; Fault Detection; Fault Isolation;

D O I：

10.1016/j.ifacol.2016.07.573

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Today, the fault diagnosis remains a very important task due to its essential role in improving the dependability and also in minimizing the harmful consequences which can be catastrophic for equipment and human safety. This article proposes a diagnostic approach for hybrid systems through the use of Bond Graph and observers well known in continuous field, coupled to timed automata well used in the field of discrete events systems. Indeed, for a complex system, the Bond Graph allows modeling of multi-energy physical processes. The observer-based approach is used to generate dynamic models (in normal and in failing mode). The fault detection algorithm consists mainly in comparing the real measures of the system with measures estimated by an observer. Thus, the fault isolation procedure consists in analyzing the fault signature matrix. Timed automata allow to take into account the dynamic evolution of the system and the failures propagation. To refine the failure location, a diagnoser based on timed automaton is built. The proposed approach is validated by simulation tests in a hydraulic system with two tanks. (C) 2016, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

引用

页码：1002 / 1007

页数：6

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