The analysis of 1/3 octave spectrum and its application in bearing fault diagnosis

Jinying Huang*, Hongxia Pan, Xiwang Yang, Shihua Bi

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

摘要

Since 1/3 octave spectrum is a usual method in the signal analysis of vibration and noise, the energy distribution on a broad range signal can be analyzed distinctly in each 1/3 octave range by this way. In normal state, the 1/3 octave spectrum of the vibration signal for gear box is definite. But when one certain bearing in gear box goes wrong, its energy distribution of the spectrum must be different; Therefore, the bearing fault can be identified effectively by extracting the characteristic of 1/3 octave spectrum of bearing vibration signal. In this paper, the signals of two gear box in different state is analyzed, the 1/3 octave spectrum of the gear box vibration signal is compared and analyzed in normal and bearing fault state in laboratory condition, the vector of spectrum property is extracted, and then the difference of 1/3 frequency octave spectrum between the normal and fault signal is compared to recognize the bearing fault. Through the analysis of the practical testing signal, the method has such advantages as little characteristic parameter, distinct fault characteristic and so on. It is also proved that this method can apply to the fault diagnosis of roll bearing effectively.

源语言英语
页(从-至)251-254
页数4
期刊Zhendong Ceshi Yu Zhenduan/Journal of Vibration, Measurement and Diagnosis
26
SUPPL.
出版状态已出版 - 9月 2006

指纹

探究 'The analysis of 1/3 octave spectrum and its application in bearing fault diagnosis' 的科研主题。它们共同构成独一无二的指纹。

引用此