EMD and Envelope Spectrum Based Bearing Fault Detection

Abstract:

A novel method to fault diagnosis of bearing based on empirical mode decomposition (EMD) and envelope spectrum is presented. EMD method is self-adaptive to non-stationary and non-linear signal. The methodology developed in this paper decomposes the original vibration signal in intrinsic oscillation modes, using the empirical mode decomposition. Then the envelope spectrum is applied to the selected intrinsic mode function that stands for the bearing faults. The basic principle is firstly introduced in detail. Then the EMD is applied in the research of the fault detection and diagnosis of the bearing. The experimental results show that the proposed method based on EMD and envelope spectrum analysis technique can effectively diagnose the faults of bearing.

• Periodical: Advanced Materials Research (Volume 459)
• Pages: 233-237
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.459.233
• Online since: January 2012
• Authors: Zhen Tao Li, Hui Li
• Keywords: Bearing, Empirical Mode Decomposition (EMD), Envelope Spectrum, Fault Diagnosis, Signal Processing

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