Most of the techniques developed to date for module performance analysis rely on steady-state measurements from a single operating point to evaluate the level of deterioration of an engine. One of the major difficulties associated with this estimation problem comes from its underdetermined nature. It results from the fact that the number of health parameters exceeds the number of available sensors. Among the panel of remedies to this issue, a few authors have investigated the potential of using data collected during a transient operation of the engine. A major outcome of these studies is an improvement in the assessed health condition. The present study proposes a framework that formalizes this observation for a given class of input signals. The analysis is performed in the frequency domain, following the lines of system identification theory. More specifically, the mean-squared estimation error is shown to drastically decrease when using transient input signals. This study is conducted with an engine model representative of a commercial turbofan.
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e-mail: mattias.mh.henriksson@volvo.com
e-mail: tomas.mckelvey@chalmers.se
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August 2011
Research Papers
A Study on Engine Health Monitoring in the Frequency Domain
M. Henriksson,
M. Henriksson
Performance and Control Systems,
e-mail: mattias.mh.henriksson@volvo.com
Volvo Aero Corporation AB
, Trollhättan 461 81, Sweden
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T. McKelvey,
T. McKelvey
Signals and Systems,
e-mail: tomas.mckelvey@chalmers.se
Chalmers University of Technology
, Göteborg 412 96, Sweden
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O. Léonard
O. Léonard
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S. Borguet
M. Henriksson
Performance and Control Systems,
Volvo Aero Corporation AB
, Trollhättan 461 81, Swedene-mail: mattias.mh.henriksson@volvo.com
T. McKelvey
Signals and Systems,
Chalmers University of Technology
, Göteborg 412 96, Swedene-mail: tomas.mckelvey@chalmers.se
O. Léonard
J. Eng. Gas Turbines Power. Aug 2011, 133(8): 081604 (8 pages)
Published Online: April 8, 2011
Article history
Received:
July 8, 2010
Revised:
July 16, 2010
Online:
April 8, 2011
Published:
April 8, 2011
Citation
Borguet, S., Henriksson, M., McKelvey, T., and Léonard, O. (April 8, 2011). "A Study on Engine Health Monitoring in the Frequency Domain." ASME. J. Eng. Gas Turbines Power. August 2011; 133(8): 081604. https://doi.org/10.1115/1.4002832
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