DocumentCode :
3732748
Title :
Bearing fault detection based on time-frequency representations of vibration signals
Author :
H. V. Khang;H. R. Karimi;K. G. Robbersmyr
Author_Institution :
Department of Engineering, University of Agder, 4879 Grimstad, Norway
fYear :
2015
Firstpage :
1970
Lastpage :
1975
Abstract :
To prevent failures of a rolling bearing in the gearbox drive system, acceleration sensors are used to detect fault-related signals of the bearing. It is a big challenge to observe and identify signals caused by bearing defects in the time domain or the frequency spectrum by a conventional Fourier analysis. The time-frequency representation of the fault-related signals implemented by the windowed Fourier transform is studied in this work. It is shown that the fault characteristic frequencies can be clearly identified in the time-frequency spectrum if a fault occurs in the bearing of the gearbox at different speeds. Otherwise, the shaft frequency and its multiples are the main harmonics in the spectrum.
Keywords :
"Decision support systems","Time-frequency analysis","Fourier transforms","Fault detection","Vibrations","Rolling bearings","Acceleration"
Publisher :
ieee
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2015 18th International Conference on
Type :
conf
DOI :
10.1109/ICEMS.2015.7385363
Filename :
7385363
Link To Document :
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