Results 11 to 20 of about 2,451,313 (284)

Frequency Domain Analysis of Load Frequency Control Using PIDTune Model Standard

open access: yesAndalas Journal of Electrical and Electronic Engineering Technology, 2023
The load frequency control system aims to regulate the frequency in the electric power system at a normal value with a predetermined tolerance limit. In practice, the load frequency control system does not always operate optimally, therefore a controller
Heru Dibyo Laksono   +2 more
doaj   +1 more source

Frequency domain analysis of pre-stressed elastomeric vibration isolators

open access: yesDefence Technology, 2023
Two types of elastomeric vibration isolators used for equipment vibration isolation in aerospace vehicles are considered for the present study. These isolators are constructed using elastomers mounted in steel encasings.
S. Somanath   +2 more
doaj   +1 more source

Time and Frequency Domain Dynamic Analysis of Offshore Mooring

open access: yesJournal of Marine Science and Engineering, 2021
The numerical procedures for dynamic analysis of mooring lines in the time domain and frequency domain were developed in this work. The lumped mass method was used to model the mooring lines. In the time domain dynamic analysis, the modified Euler method
Shi He, Aijun Wang
doaj   +1 more source

Frequency Domain Horizontal Cross Correlation Analysis of RSA

open access: yesAdvances in Electrical and Computer Engineering, 2022
This study shows that a previously published cross correlation based power analysis (CCPA) attack applied to the Montgomery Ladder exponentiation steps of a Rivest Shamir Adleman (RSA) implementation can be improved by working in frequency domain.
AKALP KUZU, E.   +2 more
doaj   +1 more source

Time-Domain Implementation and Analyses of Multi-Motion Modes of Floating Structures

open access: yesJournal of Marine Science and Engineering, 2022
The study of wave-structure interactions involving nonlinear forces would often make use of the popular hybrid frequency–time domain method. In the hybrid method, the frequency-domain analysis could firstly provide the reliable and accurate dynamic ...
Wanan Sheng   +6 more
doaj   +1 more source

Comparison of PSD Analysis Methods in Frequency Domain Fatigue Analysis [PDF]

open access: yes한국정밀공학회지, 2019
If fatigue failure occurs during aircraft operation, it can cause catastrophic injuries. So, it is necessary to study fatigue failure at the design stage. Frequency domain fatigue analysis is used to predict fatigue failure.
Joon Jang   +4 more
doaj   +1 more source

Frequency-Domain Analysis of Linear Time-Periodic Systems [PDF]

open access: yes, 2004
In this paper, we study convergence of truncated representations of the frequency-response operator of a linear time-periodic system. The frequency-response operator is frequently called the harmonic transfer function. We introduce the concepts of input,
Bernhardsson, Bo   +2 more
core   +1 more source

Nonparametric frequency domain analysis of nonstationary multivariate time series [PDF]

open access: yes, 2002
We analyse the properties of nonparametric spectral estimates when applied to long memory and trending nonstationary multiple time series. We show that they estimate consistently a generalized or pseudo-spectral density matrix at frequencies both close ...
Velasco, Carlos
core   +3 more sources

Spectrum-Efficient Triple-Layer Hybrid Optical OFDM for IM/DD-Based Optical Wireless Communications [PDF]

open access: yes, 2020
In this paper, a triple-layer hybrid optical orthogonal frequency division multiplexing (THO-OFDM) for intensity modulation with direct detection (IM/DD) systems with a high spectral efficiency is proposed.
Ghassemlooy, Zabih   +5 more
core   +2 more sources

FLAME ANALYSIS BY SELECTED METHODS IN THE FREQUENCY DOMAIN

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2022
Diagnostics of pulverized coal combustion can be carried out in the field of process monitoring and analysis of measurement data. The information about changes in the flame is presented in the form of time series, which can be analyzed in the time and ...
Żaklin Grądz   +2 more
doaj   +1 more source

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