Bearing Fault Signature Extraction Under Time-Varying Speed Conditions Via Oscillatory Behavior-Based Signal Decomposition (Obsd)

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Date

May-18

Authors

Huang, Huan
Baddour, Natalie
Liang, Miang

Journal Title

Journal ISSN

Volume Title

Publisher

CSME-SCGM

Abstract

Oscillatory Behavior-based Signal Decomposition (OBSD) is a new technique which decomposes a signal according to oscillatory behavior, instead of frequency bands. It has been used for bearing fault signature extraction under constant speed conditions, where the bearing fault-induced vibration signal can be regarded as a low oscillatory component and the interference can be regarded as a high oscillatory component. However, its effectiveness for bearing fault signature extraction under time-varying speed conditions has not been evaluated. Theoretically, the OBSD is a frequency-independent method and should thus be effective under time-varying speed conditions. In this paper, the performance of the OBSD for bearing fault signature extraction under time-varying speed conditions is examined. The results show that the OBSD can be effectively utilized to extract the bearing fault signature under time-varying speed conditions.


Mechatronics, Robots and Control

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Keywords

Bearing fault feature extraction, Time-varying speed, Oscillatory behavior-based signal decomposition, Mechatronics, Robots and Control

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