The Delayed Correlation Envelope Analysis Technique Based on Sparse Signal Decomposition Method and its Application to Bearing early Fault Diagnosis

Abstract:

In order to extract the early weak fault information submerged in strong background noise of the bearing vibration signal, a delayed correlation envelope technique based on sparse signal decomposition method is proposed. This method can improve the signal to noise and extract the fault information efficiently. For the strong noise problem in the early fault, based on D-value of adjacent residual energy as the termination condition of the iterative method, reducing the noise effectively, and combine it with delayed correlation to enhance the denoising effect. The analysis results of roller bearing experimental data confirm the feasibility and validity of this method.

• Periodical: Advanced Materials Research (Volume 819)
• Pages: 292-296
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.819.292
• Online since: September 2013
• Authors: Dai Yi Mo, Ling Li Cui, Jin Wang, Yong Gang Xu
• Keywords: Delayed Correlation Envelope, D-Value of Adjacent Residual Energy, Gabor-Atom, Sparse-Decomposition

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