Title :
Diagnosis of combination faults in a planetary gearbox using a modulation signal bispectrum based sideband estimator
Author :
Xiange Tian;Gaballa M. Abdallaa;Ibrahim Rehab;Fengshou Gu;Andrew D. Ball;Tie Wang
Author_Institution :
Centre for Efficiency and Performance Engineering, University of Huddersfield, Huddersfield, UK
Abstract :
This paper presents a novel method for diagnosing combination faults in planetary gearboxes. Vibration signals measured on the gearbox housing exhibit complicated characteristics because of multiple modulations of concurrent excitation sources, signal paths and noise. To separate these modulations accurately, a modulation signal bispectrum based sideband estimator (MSB-SE) developed recently is used to achieve a sparse representation for the complicated signal contents, which allows effective enhancement of various sidebands for accurate diagnostic information. Applying the proposed method to diagnose an industrial planetary gearbox which coexists both bearing faults and gear faults shows that the different severities of the faults can be separated reliably under different load conditions, confirming the superior performance of this MSB-SE based diagnosis scheme.
Keywords :
"Gears","Vibrations","Frequency modulation","Sun","Amplitude modulation"
Conference_Titel :
Automation and Computing (ICAC), 2015 21st International Conference on
DOI :
10.1109/IConAC.2015.7313942