Optimised Spectral Kurtosis for bearing diagnostics under electromagnetic interference
نویسندگان
چکیده
منابع مشابه
The Application of Spectral Kurtosis to Bearing Diagnostics
The choice of demodulation band for envelope analysis of faulty bearings is often made by spectrum comparison with a healthy bearing, to choose resonance frequencies where the largest change occurred as a result of the fault. It has recently been established that the so-called “spectral kurtosis” gives a very similar indication of the band to be demodulated without requiring historical data. Th...
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IXO with its high throughput and spectral resolution will allow X-ray spectroscopy to become a standard working horse for astrophysics. The grating spectrometers on Chandra and XMM-Newton have opened the field, but due to their limited effective area only for the brightest sources and due to the way that gratings work only for point sources or very compact extended sources. With IXO, the effect...
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This paper deals with the application of the Spectral Kurtosis (SK) to bearing fault detection in asynchronous machines. This one-dimensional spectral measure allows to study the nature of the harmonic components of the stator current of an induction motor running at a constant rotation speed. It provides additional information with respect to second order quantities given by the Power Spectrum...
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Kurtosis of a time signal has been a popular tool for detecting nongaussianity. Recently, kurtosis as a function frequency defined in spectral domain has been successfully used in the fault detection of induction motors, machine bearings. A link between the nongaussianity and nonstationaity has been established through Wold-Cramer’s decomposition of a nonstationary signal, and the properties of...
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ژورنال
عنوان ژورنال: Mechanical Systems and Signal Processing
سال: 2016
ISSN: 0888-3270
DOI: 10.1016/j.ymssp.2015.12.034