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RESONANCE-BASED VIBRATION SIGNAL DENOISING USING WAVELET PACKET DECOMPOSITION

M. SHAGHAGHI

EE Department, Iran University of Science and Technology, Narmak, Tehran, Iran

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M. H. KAHAEI

EE Department, Iran University of Science and Technology, Narmak, Tehran, Iran

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, and

J. POSHTAN

EE Department, Iran University of Science and Technology, Narmak, Tehran, Iran

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https://doi.org/10.1142/S021947750700391XCited by:2 (Source: Crossref)

Abstract

This paper presents a new on-line technique for denoising impulsive vibration signals in noisy environments using Wavelet Packets. The proposed algorithm is based on localizing the frequency subbands of the resonances embedded in impulsive vibration signals. The performance of the algorithm is evaluated in denoising real vibration signals measured from faulty bearings. The results compared to the theoretical values and those obtained by the HFD algorithm show the effectiveness of the proposed algorithm while the computational cost reduces to half.

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