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Bond Graph Modeling Procedures for Fault Detection and Isolation of Complex Flow Processes

Feenstra, P.J. and Mosterman, P.J. and Biswas, G. and Breedveld, P.C. (2001) Bond Graph Modeling Procedures for Fault Detection and Isolation of Complex Flow Processes. Proc. of International Conference on Bond Graph Modeling and Simulation, 2001-01-07 - 2001-01-11, Phoenix, AZ.

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Abstract

Many models for fault detection and isolation (FDI) will contain multi-port energy storage and flow-dependencies due to convection. Converting these models into qualitative ones leads to ambiguities that can be eliminated by analysis of boundary conditions. In this study the example of an automotive cooling system is used to demonstrate how these issues can be handled. Furthermore, time constants in the models need to correspond to the bandwidth of the data acquisition system. In order to achieve this, parameters leading to irrelevant time constants can be eliminated by assigning relatively small and large parameters to be zero or infinite respectively. However, this may result in (i) discontinuities and (ii) zero order causal paths ("algebraic loops"). Compensation of qualitative effects instead of reversal is shown to be an adequate solution for these problems.

Document Type:Conference or Workshop Item (Paper)
Additional Information:LIDO-Berichtsjahr=2001,
Title:Bond Graph Modeling Procedures for Fault Detection and Isolation of Complex Flow Processes
Authors:
AuthorsInstitution or Email of Authors
Feenstra, P.J.Twente University, NL
Mosterman, P.J.UNSPECIFIED
Biswas, G.Vanderbilt University, Nashville
Breedveld, P.C.Twente University, NL
Date:2001
Page Range:pp. 77-82
Editors:
EditorsEmail
SCS, UNSPECIFIED
Status:Published
Keywords:fault detection and isolation, thermalfluid systems, hybrid systems, bond graphs, model-based diagnosis, qualitative reasoning
Event Title:Proc. of International Conference on Bond Graph Modeling and Simulation
Event Location:Phoenix, AZ
Event Type:international Conference
Event Dates:2001-01-07 - 2001-01-11
Organizer:The Society for Computer Simulation International
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flexible Aircraft (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics
Deposited By: elib DLR-Beauftragter
Deposited On:16 Sep 2005
Last Modified:12 Dec 2013 20:01

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