... the engine model parameters is independently verified by successful estimation of parameters by nonlinear least-squares estimation. 22 12 2009 26 03 2010 24 08 2010 24 08 2010 fault diagnosis jet engines least squares approximations parameter estimation wavelet transforms...

... operation was estimated. Wavelet transforms were used to condition the signal, and the denoised signals were subsequently forecast. The case study presented here applies the two methodologies to the operational data from a simple cycle 85 MW General Electric gas turbine. Those operating data were used...

... the optimal sensor location for FOD-event detection. In the presence of significant noise, precise location of the FOD event in time was obtained using the developed wavelet-based feature. 21 05 2004 17 11 2006 reduced order systems wavelet transforms feature extraction jet engines...

...Iain S. Cade; Patrick S. Keogh; M. Necip Sahinkaya A novel method for transient rotor/active magnetic bearing control using sampled wavelet coefficients is proposed. Control currents are formulated in the wavelet transform domain, prior to signal reconstruction. The wavelet based controller...

... a portion of the coast down signal (last 2 seconds) was extracted to perform the wavelet analysis in the computer. There are two different transformation methods that could be used for wavelet analysis. There are the continuous wavelet transform (CWT) and the discrete wavelet transform (DWT). DWT...

... 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...