The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2014
Filed:
Jun. 23, 2011
Andrew F. Geib, Glastonbury, CT (US);
Chung Chieh Kuo, Arcadia, CA (US);
Martin Gawecki, Los Angeles, CA (US);
Enshuo Tsau, Rowland Heights, CA (US);
Je Won Kang, Wilmington, CA (US);
Paul Raymond Scheid, West Hartford, CT (US);
Andrew F. Geib, Glastonbury, CT (US);
Chung Chieh Kuo, Arcadia, CA (US);
Martin Gawecki, Los Angeles, CA (US);
EnShuo Tsau, Rowland Heights, CA (US);
Je Won Kang, Wilmington, CA (US);
Paul Raymond Scheid, West Hartford, CT (US);
United Technologies Corporation, Hartford, CT (US);
Abstract
A fault detection and diagnosis method for a gas turbine engines comprises collecting a sensor signal from an acoustic or vibrational sensor at the gas turbine engine, pre-processing the sensor signal to remove predictable background, and extracting a feature set from the sensor signal using Mel-Frequency Cepstral Coefficients (MFCC) algorithms and/or Code Excited Linear Prediction (CELP) algorithms. Fault and non-fault states are reported based on comparison between the feature set and a library of fault and non-fault feature profiles corresponding to fault and non-fault states of the gas turbine engine.