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Measurement Selection and Diagnosability of Complex Physical Systems

Mosterman, P. J. and Biswas, G. and Sriram, N. (1997) Measurement Selection and Diagnosability of Complex Physical Systems. Eight International Workshop on Principles of Diagnosis (DX-97), Mont-Saint-Michel, France, Sept. 15-18, 1999.

Full text not available from this repository.

Abstract

Functional redundancy techniques in diagnosis rely on models of a system to infer deviating system variables without directly measuring them. To avoid an overwhelming or excessive number of observations and unnecessary cost, it is important to establish a minimal number of required observations to achieve a certain degree of diagnosability. Complete diagnosability allows for unique isolation of faults. In general, fault effects propagate to affect multiple system variables, but different faults impose different temporal signatures on the measurements. However, faults may cascade, or propagating effects often trigger compensating mechanisms which may mask the original fault signature. These aggregate behaviors make it hard to reliably determine the initial fault. For dynamic, continuous systems, it is important to quickly isolate faults by using more observations, thus reducing the chance for unique signatures to be masked by other effects. The trade-off between lesser observations and quick fault isolation is investigated in this work, and a measurement selection algorithm is presented to derive a minimal set of measurements to achieve complete diagnosability.

Item URL in elib:https://elib.dlr.de/3449/
Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=1999,
Title:Measurement Selection and Diagnosability of Complex Physical Systems
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Mosterman, P. J.UNSPECIFIEDUNSPECIFIED
Biswas, G.Vanderbilt University, Nashville, TNUNSPECIFIED
Sriram, N.Vanderbilt University, Nashville, TNUNSPECIFIED
Date:1997
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 79-86
Status:Published
Keywords:FDI, model based diagnosis, diagnosability, measurement selection, sensor placement
Event Title:Eight International Workshop on Principles of Diagnosis (DX-97), Mont-Saint-Michel, France, Sept. 15-18, 1999
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W SY - Technik für Raumfahrtsysteme
DLR - Research area:Space
DLR - Program:W SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):UNSPECIFIED
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Robotics and Mechatronics (until 2012) > Institut für Robotik und Systemdynamik
Deposited By: DLR-Beauftragter, elib
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 16:25

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