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Evaluation of an Enhanced Bank of Kalman Filters for In-Flight Aircraft Engine Sensor Fault DiagnosticsIn this paper, an approach for in-flight fault detection and isolation (FDI) of aircraft engine sensors based on a bank of Kalman filters is developed. This approach utilizes multiple Kalman filters, each of which is designed based on a specific fault hypothesis. When the propulsion system experiences a fault, only one Kalman filter with the correct hypothesis is able to maintain the nominal estimation performance. Based on this knowledge, the isolation of faults is achieved. Since the propulsion system may experience component and actuator faults as well, a sensor FDI system must be robust in terms of avoiding misclassifications of any anomalies. The proposed approach utilizes a bank of (m+1) Kalman filters where m is the number of sensors being monitored. One Kalman filter is used for the detection of component and actuator faults while each of the other m filters detects a fault in a specific sensor. With this setup, the overall robustness of the sensor FDI system to anomalies is enhanced. Moreover, numerous component fault events can be accounted for by the FDI system. The sensor FDI system is applied to a commercial aircraft engine simulation, and its performance is evaluated at multiple power settings at a cruise operating point using various fault scenarios.
Document ID
20040110846
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Kobayashi, Takahisa
(QSS Group, Inc. Cleveland, OH, United States)
Simon, Donald L.
(Army Research Lab. Cleveland, OH, United States)
Date Acquired
August 21, 2013
Publication Date
August 1, 2004
Subject Category
Aircraft Stability And Control
Report/Patent Number
E-14712
ARL-TR-3252
GT2004-53640
NASA/TM-2004-213203
Meeting Information
Meeting: Turbo Expo 2004
Location: Vienna
Country: Austria
Start Date: June 14, 2004
End Date: June 17, 2004
Sponsors: American Society of Mechanical Engineers
Funding Number(s)
WBS: WBS 22-728-30-05
PROJECT: DA Proj. 1L1-61102-AF-20
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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