Generalized spectral coherence for cyclostationary signals with α-stable distribution
Sign Up to like & getrecommendations! Published in 2021 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2021.107737
Abstract: Abstract The statistical characteristics of cyclostationary signals vary periodically in time. In the Gaussian (or second-order) case this property is typically related to the periodic autocovariance function. Thus, many classical methods for detection of cyclostationarity… read more here.
Keywords: spectral coherence; cyclostationary signals; stable distribution; generalized spectral ... See more keywords
Enhancement of decomposed spectral coherence using sparse nonnegative matrix factorization
Sign Up to like & getrecommendations! Published in 2021 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2021.107747
Abstract: Abstract Integration of the spectral coherence over the domain of spectral frequency is one popular way for reaching the envelope spectrum which is an indispensable tool for the fault diagnosis of rotating machineries. Envelope spectrum… read more here.
Keywords: matrix factorization; coherence; spectral coherence; envelope spectrum ... See more keywords
A weighting function for improvement of spectral coherence based envelope spectrum
Sign Up to like & getrecommendations! Published in 2021 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2021.107929
Abstract: Abstract Envelope analysis plays an essential role in fault diagnostics of rotating machinery. One popular method to attain the envelope spectrum is to integrate the spectral coherence over a chosen spectral frequency band. Considering the… read more here.
Keywords: envelope spectrum; spectral coherence; weighting function; coherence ... See more keywords
Enhancement of cyclic spectral coherence map by statistical testing approach—application to bearing faults diagnosis in electric motors
Sign Up to like & getrecommendations! Published in 2024 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/ad93ef
Abstract: Efficiency of fault detection in rolling element bearings is heavily influenced by the quality of data. In controlled environments, such as test rigs designed for bearing diagnostics, data quality is relatively good. Similarly, diagnosing bearings… read more here.
Keywords: spectral coherence; cyclic spectral; electric motors; map statistical ... See more keywords
Spectral coherence properties of continuum generation in bulk crystals.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.459123
Abstract: The stability of the phase difference between two white-light continua, generated from the same 180-fs pulses at ≃1035 nm, is assessed by a modified Bellini-Hänsch interferometer. Mutual spectral phase stability is studied and quantified as a… read more here.
Keywords: generation bulk; bulk crystals; continuum generation; properties continuum ... See more keywords
Evaluation of Electroencephalogram Signals of the Professional Pianists during Iconic Memory and Working Memory Tests Using Spectral Coherence
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Medical Signals and Sensors"
DOI: 10.4103/2228-7477.232084
Abstract: Background: Today, the neuroscience has growth in many aspects, and the effects of different factors on memory obtained many achievements. Several scientific and experimental studies evaluated effects of music on style and behavior of people;… read more here.
Keywords: memory; iconic memory; spectral coherence; working memory ... See more keywords