Results 11 to 20 of about 98,906 (246)

Lagrangian single-particle turbulent statistics through the Hilbert-Huang transform [PDF]

open access: yesPhysical Review E, 2013
The Hilbert-Huang transform is applied to analyze single particle Lagrangian velocity data from numerical simulations of hydrodynamic turbulence. The velocity trajectory is described in terms of a set of intrinsic mode functions, C_{i}(t), and of their instantaneous frequency, _{i}(t).
Huang   +9 more
openaire   +14 more sources

Power-Line Partial Discharge Recognition with Hilbert–Huang Transform Features

open access: yesEnergies, 2022
Partial discharge (PD) has caused considerable challenges to the safety and stability of high voltage equipment. Therefore, highly accurate and effective PD detection has become the focus of research.
Yulu Wang, Hsiao-dong Chiang, Na Dong
doaj   +2 more sources

Method for Fault Diagnosis of Temperature-Related MEMS Inertial Sensors by Combining Hilbert–Huang Transform and Deep Learning [PDF]

open access: yesSensors, 2020
In this paper, we propose a novel method for fault diagnosis in micro-electromechanical system (MEMS) inertial sensors using a bidirectional long short-term memory (BLSTM)-based Hilbert–Huang transform (HHT) and a convolutional neural network (CNN ...
Tong Gao   +5 more
doaj   +2 more sources

Bearing Health Monitoring Based on Hilbert–Huang Transform, Support Vector Machine, and Regression

open access: yesIEEE Transactions on Instrumentation and Measurement, 2015
International audienceThe detection, diagnostic and prognostic of bearing degradation play a key role in increasing the reliability and safety of electrical machines especially in key industrial sectors.
A. Soualhi, K. Medjaher, N. Zerhouni
semanticscholar   +5 more sources

Power System Parameters Forecasting Using Hilbert-Huang Transform and Machine Learning [PDF]

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2014
A novel hybrid data-driven approach is developed for forecasting power system parameters with the goal of increasing the efficiency of short-term forecasting studies for non-stationary time-series. The proposed approach is based on mode decomposition and
V.G. Kurbatsky   +5 more
doaj   +4 more sources

Autonomous fault detection and diagnosis for permanent magnet synchronous motors using combined variational mode decomposition, the Hilbert-Huang transform, and a convolutional neural network

open access: yesComputers & electrical engineering, 2023
The continuous and online monitoring of the condition of electrical machines is key to their safe operation. This study introduces a novel fault detection and diagnosis technique for continuous monitoring of faults in permanent magnet synchronous motors (
Ma’d El-Dalahmeh   +5 more
semanticscholar   +1 more source

Cyber-Attack Detection and Cyber-Security Enhancement in Smart DC-Microgrid Based on Blockchain Technology and Hilbert Huang Transform

open access: yesIEEE Access, 2021
Due to the simultaneous development of DC-microgrids (DC-MGs) and the use of intelligent control, monitoring and operation methods, as well as their structure, these networks can be threatened by various cyber-attacks.
M. Ghiasi   +5 more
semanticscholar   +1 more source

An instantaneous frequency analysis method of stay cables

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2021
This paper presents and evaluates in detail a conjugate-pair decomposition method for tracking the instantaneous frequency of a vibration signal by processing only three (or more) most recent data points, and Probability Box theory was employed to obtain
Rumian Zhong, P Frank Pai
doaj   +1 more source

SPECTRAL ESTIMATION OF TIME SERIES

open access: yesСовременная наука и инновации, 2022
As a result of spectral analysis, namely, the fast Fourier transform (FFT) method, the wavelet transform method, the Hilbert-Huang transform method, certain periods of the time series representing the monthly average values of the sunspot numbers were ...
L. N. Dzhimbeeva   +5 more
doaj   +1 more source

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