NDLI: Leakage Fault Detection Method for Axial-Piston Variable Displacement Pumps

Content Provider	IEEE Xplore Digital Library
Author	Palazzolo, J.J. Scheunemann, L.D. Hartin, J.R.
Copyright Year	2008
Description	Author affiliation: Sentient Corp., Williston, VT (Palazzolo, J.J.; Scheunemann, L.D.; Hartin, J.R.)
Abstract	To address the lack of health monitoring for gas turbine engine accessory components, Sentient developed a promising fault estimation algorithm for axial-piston variable displacement pumps. The key to this success was the development of a physics-based nonlinear model of the system that includes three common types of fluid leakage faults. The modeling effort and simulation results provided the thorough knowledge needed to extract features from the system responses to detect the occurrence of faults. The nominal pump and the pump with a single piston replaced by three different machined pistons were tested to emulate varying stages of piston wear. The experiments demonstrated that the model was able to capture the dynamic behavior of the actual system. By considering several time and frequency domain metrics, a fault estimation method was developed that correctly identified the presence and severity of leakage faults, while using a fraction of the memory and computational resources of other model-based methods.
Starting Page	1
Ending Page	8
File Size	4991820
Page Count	8
File Format	PDF
ISBN	9781424414871
ISSN	1095323X
DOI	10.1109/AERO.2008.4526609
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault detection Pumps Pistons Monitoring Turbines Engines Feature extraction Testing Frequency domain analysis Frequency estimation
Content Type	Text
Resource Type	Article
Subject	Aerospace Engineering Space and Planetary Science

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