Genetically programmed-based artificial features extraction applied to fault detection

Authors:
Hiram Firpi;George Vachtsevanos
Affiliations:
Indiana University-Purdue University, 410 West 10th Street, Suite 5000, Indianapolis, IN 46202-5122, USA;Georgia Institute of Technology, Department of Electrical and Computer Engineering, Van Leer Building, 777 Atlantic Drive, Atlanta, GA 30332, USA
Venue:
Engineering Applications of Artificial Intelligence
Year:
2008

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Abstract

This paper presents a novel application of genetically programmed artificial features, which are computer crafted, data driven, and possibly without physical interpretation, to the problem of fault detection. Artificial features are extracted from vibration data of an accelerometer sensor to monitor and detect a crack fault or incipient failure seeded in an intermediate gearbox of a helicopter's main transmission. Classification accuracies for the artificial feature constructed from raw data exceeded 99% over training and independent validation sets. As a benchmark, GP-based artificial features constructed from conventional ones underperformed those derived from raw data by over 2% over the training and over 11% over the testing data.