Bond graph model-based fault detection using residual sinks
- In this paper, residual sinks are used in bond graph model-based quantitative fault detection for the coupling of a model of a faultless process engineering system to a bond graph model of the faulty system. By this way, integral causality can be used as the preferred computational causality in both models. There is no need for numerical differentiation. Furthermore, unknown variables do not need to be eliminated from power continuity equations in order to obtain analytical redundancy relations (ARRs) in symbolic form. Residuals indicating faults are computed numerically as components of a descriptor vector of a differential algebraic equation system derived from the coupled bond graphs. The presented bond graph approach especially aims at models with non-linearities that make it cumbersome or even impossible to derive ARRs from model equations by elimination of unknown variables. For illustration, the approach is applied to a non-controlled as well as to a controlled hydraulic two-tank system. Finally, it is shown that not only the numerical computation of residuals but also the simultaneous numerical computation of their sensitivities with respect to a parameter can be supported by bond graph modelling.
Document Type: | Article |
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Language: | English |
Author: | Wolfgang Borutzky |
Parent Title (English): | Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering |
Volume: | 223 |
Issue: | 3 |
First Page: | 337 |
Last Page: | 352 |
ISSN: | 0959-6518 |
URN: | urn:nbn:de:hbz:1044-opus-6098 |
DOI: | https://doi.org/10.1243/09596518JSCE666 |
Publisher: | Sage |
Publishing Institution: | Hochschule Bonn-Rhein-Sieg |
Date of first publication: | 2008/12/11 |
Embargo Date: | 2009/12/11 |
Copyright: | © IMechE 2009. This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively. |
Keyword: | bond graph modelling; differential algebraic equation systems; fault indicators; numerical computation of residuals; parameter sensitivity of residuals; quantitative model-based fault detection; residual bond graph sinks; simulation of fault scenarios |
Departments, institutes and facilities: | Fachbereich Informatik |
Dewey Decimal Classification (DDC): | 0 Informatik, Informationswissenschaft, allgemeine Werke / 00 Informatik, Wissen, Systeme / 004 Datenverarbeitung; Informatik |
Open access funding: | Deutsche Forschungsgemeinschaft / Allianz- und Nationallizenzen: Diese Beiträge sind mit Zustimmung der Rechteinhaber aufgrund einer DFG-geförderten National- bzw. Allianzlizenz frei zugänglich. |
Entry in this database: | 2015/04/02 |
Licence (Multiple languages): | In Copyright (Urheberrechtsschutz) |