Results 21 to 30 of about 2,304,730 (298)

On the Measurement of Ocean Near-Surface Current from a Moving Buoy

open access: yesJournal of Marine Science and Engineering, 2023
This paper studies the error that occurs when measuring surface currents with a current meter mounted on a buoy or a mooring line whose horizontal and vertical motions respond to the presence of waves.
Carlos F. Herrera-Vázquez   +4 more
doaj   +1 more source

Effective control of the error in a direct measurement of core-loss power [PDF]

open access: yes, 1995
Accuracy of a direct measurement of core-loss power is severely limited in many applications by the extra phase shift between the measured voltage and current.
Tan, F. Dong   +2 more
core   +1 more source

INFLUENCE OF VARIATIONS OF THE CONDUCTIVITY OF UPPER LAYER OF TWO-LAYER SAMPLE ON OF PHASE INTRODUCED ELECTROMOTIVE FORCE OF SUPERIMPOSED TRANSDUCER OF EDDY CURRENT THICKNESS METER

open access: yesПриборы и методы измерений, 2017
In carrying out eddy current thickness measurement of two-layer conductive objects one from the interfering factors is the presence of variations in the value of the electrical conductivity of the material of the upper layer (coating) when moving from ...
A. V. Chernyshev
doaj   +1 more source

Current and voltage based bit errors and their combined mitigation for the Kirchhoff-law-Johnson-noise secure key exchange [PDF]

open access: yes, 2013
We classify and analyze bit errors in the current measurement mode of the Kirchhoff-law-Johnson-noise (KLJN) key distribution. The error probability decays exponentially with increasing bit exchange period and fixed bandwidth, which is similar to the ...
Gingl, Zoltan   +4 more
core   +2 more sources

Intrabeam Scattering Analysis of ATF Beam Measurements [PDF]

open access: yes, 2001
At the Accelerator Test Facility (ATF) at KEK intrabeam scattering (IBS) is a strong effect for an electron machine. It is an effect that couples all dimensions of the beam, and in April 2000, over a short period of time, all dimensions were measured as ...
Bane, K. L. F.   +5 more
core   +2 more sources

TMR array with circular skeleton coil for high-current measurement

open access: yesEnergy Reports, 2021
DC high current measurement is one of the important supporting technologies of the power system. As an emerging current sensing technology, tunnel magnetoresistance (TMR) has attracted more and more attention due to its advantages of high sensitivity and
Changxi Yue   +4 more
doaj   +1 more source

Zero‐Sequence current measurement uncertainty in three‐phase power systems during normal operation

open access: yesIET Generation, Transmission & Distribution, 2021
Zero‐sequence currents in high‐voltage power systems during normal operation can have a significant influence on nearby infrastructure. It is therefore necessary to gain insight into typical levels of zero‐sequence currents in a variety of operational ...
Sjoerd Nauta, Ramiro Serra
doaj   +1 more source

Protection Loop Error Measurement Based on Factor Analysis and Statistics Technology

open access: yesZhongguo dianli, 2023
In order to improve the reliability of the protection measurement circuit and ensure the safe operation of the power system, which requires the measurement error of the protection device to be solved in time.
Yawen YI   +5 more
doaj   +1 more source

Errors in measurement of current distribution in a superconducting tape [PDF]

open access: yesSuperconductor Science and Technology, 2011
The paper reports on the role of the typical mapping errors in measurement of the lateral sheet current distribution Iy(x) in a superconducting tape. The sheet current is calculated indirectly, from the mapped data of the self magnetic field of the superconducting layer. The field is generated by transport or induced current in a tape.
openaire   +1 more source

Analysis and Compensation of Current Measurement Errors in Machine Drive Systems—A Review

open access: yesEnergies
The rapid development of machine drive systems is closely tied to advancements in signal sampling technology. Accurate measurement results, especially current measurement results, are crucial for high-performance machine drive systems.
Pingyue Song   +5 more
doaj   +1 more source

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