... 25 01 2012 25 01 2012 accelerometers acoustic emission condition monitoring fault diagnosis feature extraction gears microphones principal component analysis sensor fusion tachometers time-frequency analysis vibrations wind turbines wind turbine gearbox condition...

... symbolic dynamic filtering by optimally partitioning the time series data of sensor observation. The objective here is to mask the effects of sensor noise level variation and magnify the system fault signatures. In this regard, the concepts of feature extraction and pattern classification are used...

...James A. Turso; Charles Lawrence; Jonathan S. Litt The development of a wavelet-based feature extraction technique specifically targeting FOD-event induced vibration signal changes in gas turbine engines is described. The technique performs wavelet analysis of accelerometer signals from specified...

... 27 12 2002 data analysis wavelet transforms transient analysis feature extraction vibrations signal processing fast Fourier transforms Rotating machinery provides the backbone of numerous industries, from the turbine-compressor trains used in the petrochemical industry...