Results 31 to 40 of about 35,860 (209)
Hilbert–Huang transform analysis of storm waves [PDF]
Applied Ocean Research, 2009 Abstract We use the Hilbert–Huang transform (HHT) for the spectral analysis of a North Sea storm that took place in 1997. We look at the contribution of the different Intrinsic Mode Functions (IMF) obtained using the Empirical Mode Decomposition algorithm, and also compare the Hilbert Marginal Spectra and the classical Fourier Spectra for the data ...
J. Ortega, George H. Smith
openaire +1 more source
Gear Fault Detection Based on Teager-Huang Transform
International Journal of Rotating Machinery, 2010 Gear fault detection based on Empirical Mode Decomposition (EMD) and Teager Kaiser Energy Operator (TKEO) technique is presented. This novel method is named as Teager-Huang transform (THT).
Hui Li, Haiqi Zheng, Liwei Tang
doaj +1 more source
Nonlinear analysis of the electroencephalogram in depth of anesthesia
Revista Facultad de Ingeniería Universidad de Antioquia, 2015 Digital signal processing of the electroencephalogram (EEG) became important in monitoring depth of anesthesia (DoA) being used to provide a better anesthetic technique.
Oscar Leonardo Mosquera-Dusan +3 more
doaj +1 more source
A new mechanical structural damage feature index based on HHT [PDF]
, 2018 A new damage feature index is presented for the structural health monitoring based on Hilbert-Huang transform (HHT). The energy marginal spectrum of the dynamic signal is used to construct damage characteristic parameter, which can reflect the signal ...
Hua, Lin, Wang, Fusheng, Yue, Zhufeng
core +3 more sources
Hilbert–Huang Transform Analysis of Quasiperiodic Oscillations in MAXI J1820+070
The Astrophysical Journal, 2023 We present a time-frequency analysis, based on the Hilbert–Huang transform, of the evolution of the low-frequency quasiperiodic oscillations observed in the black hole X-ray binary MAXI J1820+070.
Wei Yu +16 more
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Milling gate vibrations analysis via Hilbert-Huang transform
ITM Web of Conferences, 2017 The study aimed at identification of the milling gate modal parameters: natural frequencies and mode shapes, in order to establish the working range free from resonant areas.
Litak Grzegorz +2 more
doaj +1 more source
Pulse Signal Analysis Method Based on Improved HHT [PDF]
Jisuanji gongcheng, 2019 The traditional Hilbert-Huang Transform(HHT) has low accuracy in Empirical Mode Decomposition(EMD) when processing pulse signals,and there are mode mixing problems.In response to this problem,this paper proposes an improved HHT method.Combined with Time ...
KUANG Xue, LI Zhi, WANG Yongjun, ZHANG Shaorong
doaj +1 more source
Diagnostics of gear faults based on EMD and automatic selection of intrinsic mode functions [PDF]
, 2011 Signal processing is an important tool for diagnostics of mechanical systems. Many different techniques are available to process experimental signals, among others: FFT, wavelet transform, cepstrum, demodulation analysis, second order ciclostationarity ...
P. Pennacchi, R. Ricci
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Quantitative Identification of Pulse-Like Ground Motions Based on Hilbert–Huang Transform
Shock and Vibration, 2021 Aiming to address the problem of pulse-like ground motions being difficult to identify, this paper refines the Baker’s wavelet-based pulse-like ground motions identification method, followed by a new pulse-like ground motion identification method based ...
Zhen Liu
doaj +1 more source
A Comparative Study of Time-Frequency Representations for Fault Detection in Wind Turbine [PDF]
, 2011 To reduce the cost of wind energy, minimization and prediction of maintenance operations in wind turbine is of key importance. In variable speed turbine generator, advanced signal processing tools are required to detect and diagnose the generator faults ...
BARAKAT, Georges +4 more
core +6 more sources