Notice of RetractionApplication of wavelet to gearbox vibration signals for fault detection

The method of de-noising by wavelet transformation and the basic theory of wavelet transformation based on threshold de-noising are introduced in this paper, the characteristics of noise under the wavelet decomposition are discussed, and the gear fault diagnosis of a gearbox is studied through the wavelet analysis. Experiment result demonstrates that this method can remove the strong noise and extract the pulse feature of fault signal effectively. The method is effective and feasible via the practical application.