Precedent-free fault isolation in a diesel engine exhaust gas recirculation system

Cholette, Michael E. & Djurdjanovic, Dragan (2012) Precedent-free fault isolation in a diesel engine exhaust gas recirculation system. Journal of Dynamic Systems, Measurement, and Control, 134(3), 031007.

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In this paper, a recently introduced model-based method for precedent-free fault detection and isolation (FDI) is modified to deal with multiple input, multiple output (MIMO) systems and is applied to an automotive engine with exhaust gas recirculation (EGR) system. Using normal behavior data generated by a high fidelity engine simulation, the growing structure multiple model system (GSMMS) approach is used to construct dynamic models of normal behavior for the EGR system and its constituent subsystems. Using the GSMMS models as a foundation, anomalous behavior is detected whenever statistically significant departures of the most recent modeling residuals away from the modeling residuals displayed during normal behavior are observed. By reconnecting the anomaly detectors (ADs) to the constituent subsystems, EGR valve, cooler, and valve controller faults are isolated without the need for prior training using data corresponding to particular faulty system behaviors.

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3 citations in Web of Science®

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ID Code: 63974
Item Type: Journal Article
Refereed: Yes
DOI: 10.1115/1.4005511
ISSN: 1528-9028
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 American Society of Mechanical Engineers
Deposited On: 04 Nov 2013 22:26
Last Modified: 04 Apr 2014 17:52

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