Cyclic bispectrum patterns of defective rolling element bearing vibration response

Yiakopoulos, Christos; Antoniadis, Ioannis

doi:10.1007/s10010-005-0018-9

Cited by 20 publications

(11 citation statements)

References 9 publications

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“…A simple model which characterizes the IM stator current, with electrical rotor asymmetries includes the so-called sideband frequencies and it can be expressed by [7], [10,11]: …”

Section: Model Of the Brbs Stator Currentmentioning

confidence: 99%

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Bi-spectrum analysis of coupled harmonics and its application to rotor faults diagnosis

Saïdi

Ali

Fnaiech

2014

2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)

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The paper aims to clarify the use of the bispectrum to detect non-linearity in time series. Further we show how patterns in the bi-spectrum are useful for identifying the frequency (or bi-frequency) components involved in the nonlinear interaction. The bi-spectrum, a third-order spectrum, has properties that lend themselves to the measurement of nonlinearities in systems. The properties of interest are insensitivity to Gaussian noise and ability to detect quadratic phase coupling. This paper considers the properties of a bispectrum estimate when applied to a system with quadratic nonlinearity excited by the superposition of harmonics in the presence of additive Gaussian noise. This is compared, using signal-to-noise ratios, to the power spectrum. Numerical examples were included to verify the results.The study aims to expand the domain of induction machines faults diagnosis. Therefore, to verify the theoretical development, an experimental test bed has been used in a steady-state condition.

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“…A simple model which characterizes the IM stator current, with electrical rotor asymmetries includes the so-called sideband frequencies and it can be expressed by [7], [10,11]: …”

Section: Model Of the Brbs Stator Currentmentioning

confidence: 99%

“…The bi-spectrum has been widely used in a good number of detection applications including biomedical engineering [4], plasma physics [5], engineering structures [6], mechanical systems [7,8], the coupling assessment between modes in a power generation system [9], and broken bars diagnosis in induction machines [10][11][12][13][14], etc.…”

Section: Introductionmentioning

confidence: 99%

Bi-spectrum analysis of coupled harmonics and its application to rotor faults diagnosis

Saïdi

Ali

Fnaiech

2014

2014 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)

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“…The most common Fourier transform method is the Discrete Time Fourier Transform (DTFT) which is calculated efficiently with the use of a Fast Fourier Transform (FFT) algorithm. In frequency domain various types of analyses can be performed such as spectral analysis, cepstrum analysis or bispectral analysis [15,16].…”

Section: Vibration Signal Analysis On Rolling Element Bearingsmentioning

confidence: 99%

Comparative Study of the Impact of Corundum Particle Contaminants Size on Wear and Fatigue Life of Grease Lubricated Ball Bearings

Koulocheris¹,

Stathis²,

Costopoulos³

et al. 2013

MME

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Ball bearings' rating life is reduced with the presence of hard particle contaminants in the lubricant. This life reduction is taken into account when calculating the modified rating life by using the contamination factor. The contamination factor is based on a general characterization of the lubrication conditions but the impact of contaminant's variables such as size, hardness and concentration level is not determined in detail. In this work, greases contaminated with hard corundum (alumina, Al 2 O 3) particles of different sizes are tested aiming at finding a pattern in the relationship between particle sizes' and wear's progress. A laboratory rig is utilized for these tests and vibration analysis tools regarding bearings' condition and estimated residual life are being assessed. After the tests, optical inspections using a stereoscope verify the vibration analyses results. The experimental results show that wear is progressing faster when smaller particles are used. The crystalline structure of the corundum and the different degree of brittleness of the contaminants seem to be the reasons for this behavior, whereas severe abrasion and deformation of the raceways have been detected.

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“…cyclic bispectrum (CBS), which combines bispectrum with the third‐order cyclostationarity. CBS has been widely applied for the study of non‐linear cyclic phenomena, especially in the area of rotating machinery [12, 14, 15].…”

Section: Introductionmentioning

confidence: 99%

Target classification using Renyi entropy features of cyclic bispectrum

Cai

Gao

2019

J. eng.

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Cyclic bispectrum patterns of defective rolling element bearing vibration response

Cited by 20 publications

References 9 publications

Bi-spectrum analysis of coupled harmonics and its application to rotor faults diagnosis

Bi-spectrum analysis of coupled harmonics and its application to rotor faults diagnosis

Comparative Study of the Impact of Corundum Particle Contaminants Size on Wear and Fatigue Life of Grease Lubricated Ball Bearings

Target classification using Renyi entropy features of cyclic bispectrum

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