Search results for "windowed Fourier transform"

showing 1 items of 1 documents

Bearing fault detection based on time-frequency representations of vibration signals

2015

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 t…

gearbox drive trainEngineeringaccelerometersBearing (mechanical)business.industryMechanical EngineeringAcousticswindowed Fourier transformEnergy Engineering and Power Technologyaccelerometers; bearing faults; gearbox drive train; windowed Fourier transform; Energy Engineering and Power Technology; Electrical and Electronic Engineering; Mechanical EngineeringFault (power engineering)Fault detection and isolationlaw.inventionTime–frequency analysisVibrationsymbols.namesakeFourier transformFourier analysislawsymbolsElectronic engineeringbearing faultsTime domainElectrical and Electronic Engineeringbusiness2015 18th International Conference on Electrical Machines and Systems (ICEMS)
researchProduct