Precedent-free fault isolation in a diesel engine EGR valve system
Cholette, Michael E. & Djurdjanovic, Dragan (2009) Precedent-free fault isolation in a diesel engine EGR valve system. In Proceedings of the ASME 2009 Dynamic Systems and Control Conference, American Society of Mechanical Engineers, Hollywood, California, USA, pp. 1-8.
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In this paper, a framework for isolating unprecedented faults for an EGR valve system is presented. Using normal behavior data generated by a high fidelity engine simulation, the recently introduced Growing Structure Multiple Model System (GSMMS) is used to construct models of normal behavior for an EGR valve system and its various subsystems. Using the GSMMS models as a foundation, anomalous behavior of the entire system is then detected as statistically significant departures of the most recent modeling residuals from the modeling residuals during normal behavior. By reconnecting anomaly detectors to the constituent subsystems, the anomaly can be isolated without the need for prior training using faulty data. Furthermore, faults that were previously encountered (and modeled) are recognized using the same approach as the anomaly detectors.
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|Item Type:||Conference Paper|
|Divisions:||Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2009 American Society of Mechanical Engineers|
|Deposited On:||04 Nov 2013 22:36|
|Last Modified:||06 Nov 2014 07:30|
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