Study on the Fault Features Extraction of the Rotor Blades Cracks
Sun Kang · Journal of Jiangxi University of Science and Technology · 2006
In this paper,wavelet packet decomposition is adopted to refine the signals with high and low frequency.It is with good trait of time-frequency localization,and it can discern the non stationary signals effectively.The vibration signals with blade cracks are acquired.Daubechies wavelet was applied to 4 measure wavelet decompositions of vibration signals of including blade crack fault.They are reconstructed with fit frequency-band by reconstruct algorithm of wavelet packet to extract the feature of blade cracks,and the blade cracks were diagnosed.