Application of Possibility Theory in the Rolling Bearing Compound Fault Diagnosis

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (1) : 73-76.

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Application of Possibility Theory in the Rolling Bearing Compound Fault Diagnosis

Luo Zhigao; He Xin; Xu Aichen; Chen Qiang; Chen Peng

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Abstract

As the Complexity of compound abnormal signal of rolling bearing, this article uses the local time frequency characteristic of Gabor wavelet to extract the characteristic parameters from the obtained signal, then the possibility theory in fuzzy mathematics was taken as the foundation to obtain the membership function of characteristic parameter. Last the successive fault diagnosis method was used to research the rolling bearing compound fault diagnosis. The experiment shows this method can be applied well in rolling bearing compound fault diagnosis under the changeable condition.

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Gabor wavelet / possibility / theory characteristic / rolling bearing / compound fault

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Luo Zhigao;He Xin;Xu Aichen;Chen Qiang;Chen Peng. Application of Possibility Theory in the Rolling Bearing Compound Fault Diagnosis [J]. Journal of Vibration and Shock, 2011, 30(1): 73-76