Application of Wavelet Packets in Bearing Fault Diagnosis
نویسندگان
چکیده
In this paper the wavelet packet transform is used for processing of rolling element bearing fault signals. The effectiveness of the envelope analysis technique is combined with the flexibility of the wavelet packet transform, helping in the minimization of interventions by the end user. According to the proposed method, a time-frequency decomposition of a vibration signal is provided and the components carrying the important diagnostic information are selected for further processing. The parameter selection criteria are discussed. The method is evaluated using a simulated signal and actual vibration signals measured from bearings with defects at different locations. Key-Words: Wavelet, Wavelet packet, Vibration, Bearing, Fault Diagnosis
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