Fault diagnosis of rolling bearings based on impulse feature enhancement and time-frequency joint noise reduction
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-021-0411-9
Abstract: Aiming at the problem that the effectiveness of impulse feature enhancement (IFE) depends on the duration of high-level (or low-level) K and the number of high-level L, we regard a segmented impulse norm as the… read more here.
Keywords: joint noise; frequency joint; time frequency; noise ... See more keywords
Time-frequency joint mappings of a terahertz metasurface for multi-dimensional analysis of biological cells.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.464443
Abstract: Traditional fast Fourier transform is used to extract the frequency component at the cost of losing the time domain, which is critical for metasurface biosensing. In this Letter, a more comprehensive algorithm, continuous wavelet transform… read more here.
Keywords: time frequency; time; frequency joint; metasurface ... See more keywords