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Dynamic diagnosis based on interval analytical redundancy relations and signs of the symptoms

A model-based approach for fault diagnosis is proposed, where the fault detection is based on checking the consistencyof the Analytical Redundancy Relations (ARRs) using an interval tool. The tool takes into account the uncertainty in theparameters and the measurements using intervals. Faults are explicitly included in the model, which allows for the exploitation of additional information. This information is obtained from partial derivatives computed from the ARRs. The signs in the residuals are used to prune the candidate space when performing the fault diagnosis task. The method is illustrated using a two-tank example, in which these aspects are shown to have an impact on the diagnosis and fault discrimination, since the proposed method goes beyond the structural methods

IOS Press

Author: Calderón-Espinoza, Gabriela
Armengol Llobet, Joaquim
Vehí i Casellas, Josep
Gelso, Esteban Reinaldo
Abstract: A model-based approach for fault diagnosis is proposed, where the fault detection is based on checking the consistencyof the Analytical Redundancy Relations (ARRs) using an interval tool. The tool takes into account the uncertainty in theparameters and the measurements using intervals. Faults are explicitly included in the model, which allows for the exploitation of additional information. This information is obtained from partial derivatives computed from the ARRs. The signs in the residuals are used to prune the candidate space when performing the fault diagnosis task. The method is illustrated using a two-tank example, in which these aspects are shown to have an impact on the diagnosis and fault discrimination, since the proposed method goes beyond the structural methods
Document access: http://hdl.handle.net/2072/206384
Language: eng
Publisher: IOS Press
Rights: Tots els drets reservats
Subject: Anàlisi d’intervals (Matemàtica)
Sistemes dinàmics diferenciables
Differentiable dynamical systems
Interval analysis (Mathematics)
Errors de sistemes (Enginyeria)
System failures (Engineering)
Title: Dynamic diagnosis based on interval analytical redundancy relations and signs of the symptoms
Type: info:eu-repo/semantics/article
Repository: Recercat

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