Journal ArticleDOI
The spectral kurtosis: a useful tool for characterising non-stationary signals
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TLDR
A formalisation of the spectral kurtosis by means of the Wold–Cramer decomposition of “conditionally non-stationary” processes is proposed, which engenders many useful properties enjoyed by the SK.About:
This article is published in Mechanical Systems and Signal Processing.The article was published on 2006-02-01. It has received 974 citations till now.read more
Citations
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Proceedings ArticleDOI
Fault Diagnosis of Rolling Bearings Based on Wavelet Packet and Spectral Kurtosis
Wang Taiyong,Lin Jinzhou +1 more
TL;DR: In this paper, a weak fault diagnosis and detection of rolling bearings based on band pass filtering and envelope demodulation method has been done, which achieved well diagnosis effect, which combined with the spectral kurtosis theory determines the parameters of band pass filter.
Journal ArticleDOI
Extraction of second-order cyclostationary sources by matching instantaneous power spectrum with stochastic model – application to wind turbine gearbox
TL;DR: A statistical indicator is proposed to assess the strength of CS components as well as a full-band time-dependent filter to recover the pure CS signals in the time domain to extract more specific information from the data themselves.
Journal ArticleDOI
Estimating the size of naturally generated defects in the outer ring and roller of a tapered roller bearing based on autoregressive model combined with envelope analysis and discrete wavelet transform
Abbas Rohani Bastami,Sima Vahid +1 more
TL;DR: In this article, the authors present an experimental investigation of the defect size estimation from the vibration signals of two types of naturally generated defects, on the outer race and roller of two tapered roller bearings.
Journal ArticleDOI
Flexible Kurtogram for Extracting Repetitive Transients for Prognostics and Health Management of Rotating Components
TL;DR: The results showed that the proposed flexible Kurtogram can be used to automatically find an optimal frequency band for demodulation analysis and it is better than the fast Kurtogram.
Journal ArticleDOI
Acoustic Emission Source Localization in Ring Gears from Wind Turbine Planetary Gearboxes
Félix Leaman,Steffen Hinderer,Ralph Baltes,Elisabeth Clausen,Brian Rieckhoff,Ralf Schelenz,Georg Jacobs +6 more
TL;DR: In this paper, an accurate and easy-to-use methodology to locate acoustic emission (AE) sources in ring gears from planetary gearboxes is presented, which uses AE wave's time of arrival calculated from three signal differential envelopes.
References
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Book
Probability, random variables and stochastic processes
TL;DR: This chapter discusses the concept of a Random Variable, the meaning of Probability, and the axioms of probability in terms of Markov Chains and Queueing Theory.
Book
Probability, random variables, and stochastic processes
TL;DR: In this paper, the meaning of probability and random variables are discussed, as well as the axioms of probability, and the concept of a random variable and repeated trials are discussed.
Journal ArticleDOI
Tutorial on higher-order statistics (spectra) in signal processing and system theory: theoretical results and some applications
TL;DR: A compendium of recent theoretical results associated with using higher-order statistics in signal processing and system theory is provided, and the utility of applying higher- order statistics to practical problems is demonstrated.
Journal ArticleDOI
The spectral kurtosis: application to the vibratory surveillance and diagnostics of rotating machines
Jérôme Antoni,Robert B. Randall +1 more
TL;DR: In this article, the spectral kurtosis (SK) was used to detect and characterize nonstationary signals in the presence of strong masking noise and to detect incipient faults in rotating machines.
Related Papers (5)
The spectral kurtosis: application to the vibratory surveillance and diagnostics of rotating machines
Jérôme Antoni,Robert B. Randall +1 more