Electrical power generation is an important component in the Electrical Power System of an Aircraft (EPS). In this paper we present a model based diagnostic framework for early generator degradation detection and tracking within an Aircraft Generator. The nominal health state is modeled empirically using an Auto-associative Kernel Regression (AAKR) technique using signals extracted from a healthy generator. Later the health state is estimated by comparing sensor observations with the model predictions. Finally, a Sequential Probability Ratio Test (SPRT) is used to detect and track degradation. This model based framework showed excellent degradation tracking performance when it was tested on a unit that was run to failure.
Model Based Diagnostics of an Aircraft Generator Using AAKR and SPRT
Sae Int. J. Aerosp
Power Systems Conference ; 2010
Sae International Journal of Aerospace ; 3 , 1 ; 137-143
2010-11-02
7 pages
Conference paper
English
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