Results 21 to 30 of about 37,026 (299)

Response of Two-Storey RC Frame with Special Base-Isolation Using Ruaumoko 2D Program [PDF]

open access: yesArchives of Civil Engineering, 2020
The control of structural vibrations due to ground motion can be done by the installation of a passive, active, and hybrid base isolation system. The primary function of the base isolator is to support the superstructure and provide huge horizontal ...
Amir Mohammad Alizada   +2 more
doaj   +1 more source

Pinched hysteresis loops in non‐linear resonators [PDF]

open access: yesIET Circuits, Devices & Systems, 2020
Abstract This study shows that pinched hysteresis can be observed in simple non‐linear resonance circuits containing a single diode that behaves as a voltage‐controlled switch. Mathematical models are derived and numerically validated for both series and parallel resonator circuits.
Ahmed S. Elwakil   +3 more
openaire   +3 more sources

Predicting loss in magnetic steels under arbitrary induction waveform and with minor hysteresis loops [PDF]

open access: yes, 2004
We have studied ways of predicting power losses in soft magnetic laminations for generic time dependence of the periodic magnetic polarization J(t). We found that, whatever the frequency and the induction waveform, the loss behavior can be quantitatively
Fiorillo, F.   +3 more
core   +1 more source

Multi-loop Hysteresis and Recursive Remnant Control [PDF]

open access: yes, 2022
Many advanced instrumentation and high-tech systems have relied on the use of smart materials, such as smart memory alloys and piezoelectric material.
Vasquez Beltran, Marco Augusto
core   +1 more source

Technical note: Analysis of concentration-discharge hysteresis loops using Self-Organizing Maps [PDF]

open access: yesHydrology and Earth System Sciences
Analyzing concentration–discharge (C–Q) hysteresis loops is essential for understanding both dissolved and particulate constituent sources and transport mechanisms in watershed hydrology.
A. Marin-Ramirez   +2 more
doaj   +1 more source

A best-fit model of power losses in cold rolled-motor lamination steel operating in a wide range of frequency and magnetization [PDF]

open access: yes, 2007
A procedure is described for identifying a mathematical model of core losses in ferromagnetic steel based on a minimal amount of experimental data. The new model has a hysteresis loss multiplicative coefficient variable only with frequency, a hysteresis ...
Ionel, D.M., Popescu, M.
core   +1 more source

Approximation of Hysteresis Changes in Electrical Steel Sheets

open access: yesEnergies, 2021
This paper describes a simple method of approximating hysteresis changes in electrical steel sheets. This method is based on assumptions that flux density or field strength changes are a sum or a difference of functions that describe one curve of the ...
Witold Mazgaj   +2 more
doaj   +1 more source

Significance of Determination Methods on Shear Modulus Measurements of Fujian Sand in Cyclic Triaxial Testing

open access: yesApplied Sciences, 2022
It has long been known that the hysteresis loops of sand under cyclic loading gradually become asymmetric with the increase of strain amplitudes, but a symmetrical hysteresis loop is widely assumed in current practice.
Dongsong Song   +2 more
doaj   +1 more source

A semi-compartmental model describing the pharmacokinetic-pharmacodynamic relationship [PDF]

open access: yesAnesthesia and Pain Medicine, 2020
Frequently, we encounter the phenomenon of hysteresis in kinetic-dynamic modeling. The hysteresis loop in the concentration-effect curve suggests a time discrepancy caused by various pharmacokinetic and pharmacodynamic factors. To collapse the hysteresis
Seunghee Ki
doaj   +1 more source

Tracking Control of Uncertain Neural Network Systems with Preisach Hysteresis Inputs: A New Iteration-Based Adaptive Inversion Approach

open access: yesActuators, 2023
To describe the hysteresis nonlinearities in smart actuators, numerous models have been presented in the literature, among which the Preisach operator is the most effective due to its capability to capture multi-loop or sophisticated hysteresis curves ...
Guanyu Lai   +4 more
doaj   +1 more source

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