A rotor fault diagnosis method based on ITD improved algorithm and correlation dimension

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (23) : 67-70.

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A rotor fault diagnosis method based on ITD improved algorithm and correlation dimension

Yang Yu Wang Huanhuan Cheng Junsheng

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Abstract

A rotor fault diagnosis method based on ITD (Intrinsic scale-time decomposition, ITD) improved algorithm and correlation dimension is proposed in this paper. Firstly, by using improved method based on ITD, the fault vibration signals of rotor system in different states can be decomposed into a set of components and the first several components is taken as the denoised signal of rotor original vibration signals according to the characters of the components; Secondly, calculate the correlation dimension of the reconstructed signals. The comparison of the analysis results from experimental data shows that the correlation dimension of vibration signals denoised by ITD improved algorithm can be used to identify the working states and fault types of the rotor system more effectively, compared with the original signals.

Key words

ITD improved algorithm / Correlation dimension / Rotor system / Fault diagnosis

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Yang Yu Wang Huanhuan Cheng Junsheng . A rotor fault diagnosis method based on ITD improved algorithm and correlation dimension[J]. Journal of Vibration and Shock, 2012, 31(23): 67-70