Results 41 to 50 of about 52,959 (254)

The effect of scleral search coil lens wear on the eye [PDF]

open access: yesBritish Journal of Ophthalmology, 2001
Scleral search coils are used to measure eye movements. A recent abstract suggests that the coil can affect the eye by decreasing visual acuity, increasing intraocular pressure, and damaging the corneal and conjunctival surface. Such findings, if repeated in all subjects, would cast doubt on the credibility of the search coil as a reliable ...
Murphy, Paul   +3 more
openaire   +3 more sources

A Low-cost Electromagnetic Docking Guidance System for Micro Autonomous Underwater Vehicles

open access: yesSensors, 2019
As important observational platforms for the Smart Ocean concept, autonomous underwater vehicles (AUVs) that perform long-term observation in fleets are beneficial because they provide large-scale sampling data with a sufficient spatiotemporal resolution.
Shilin Peng   +6 more
doaj   +1 more source

Measurement of Sudden Displacements in Superconducting Coils using Search-coils

open access: yesTEION KOGAKU (Journal of the Cryogenic Society of Japan), 2009
Search-coils, which can detect magnetic field variations, have been applied to the measurement of superconducting coil displacements. The advantage of the search-coil is that it can measure displacements which occur in an arbitrary section of a superconducting coil without making contact with a winding.
AOKI, Manabu   +4 more
openaire   +2 more sources

Analytical Calculation of Mutual Inductance of Search Coils in Interior Permanent Magnet Synchronous Motor

open access: yesWorld Electric Vehicle Journal
Inductance is an important parameter for motor design and control, and the performance of the motor is closely related to the inductance parameter. To solve the problem of the complex magnetic circuit structure of search coil mutual inductance, this ...
Xinmin Li   +3 more
doaj   +1 more source

Search Coil-Based Startup Angle and Rotor Position Estimation for Enhanced Full-Speed-Range Motor Drives

open access: yesIEEE Access
This study presents a fully integrated motor drive system capable of full-speed-range operation by employing a rotor angle estimation method based on an enhanced search coil architecture.
Hsien-Yuan Hsu, Min-Fu Hsieh
doaj   +1 more source

Design of PCB search coils for AC magnetic flux density measurement

open access: yesAIP Advances, 2018
This paper presents single-layer, double-layer and ten-layer planar square search coils designed for AC magnetic flux density amplitude measurement up to 1 T in the low frequency range in a 10 mm air gap.
Michal Ulvr
doaj   +1 more source

Inductive localization accuracy of a passive 3-D coil in an Industry 4.0 environment [PDF]

open access: yesJournal of Sensors and Sensor Systems, 2019
In this paper a localization system of a passive 3-D coil is proposed and signal uncertainties due to the 3-D coil's arbitrary orientation are analyzed. The 3-D coil is excited by an alternating primary magnetic field.
R. Psiuk   +5 more
doaj   +1 more source

Routine phasing of coiled-coil protein crystal structures with AMPLE

open access: yesIUCrJ, 2015
Coiled-coil protein folds are among the most abundant in nature. These folds consist of long wound α-helices and are architecturally simple, but paradoxically their crystallographic structures are notoriously difficult to solve with molecular-replacement
Jens M. H. Thomas   +5 more
doaj   +1 more source

Enhancing the Fault Ride-through Capability of a DFIG-WECS Using a High-Temperature Superconducting Coil

open access: yesEnergies, 2021
With the increase in doubly fed induction generator-based wind energy conversion systems (DFIG-WECS) worldwide, improving the fault ride-through (FRT) capability of the entire system has been given much attention.
Mohamed I. Mosaad   +4 more
doaj   +1 more source

Precision Analysis and Design of Rotating Coil Magnetic Measurements System

open access: yesApplied Sciences, 2020
This research presents the design and construction of measuring instruments for a dipole magnetic field using a rotating coil technique. This technique is a closed-loop speed-control system where a Proportional-Integral (PI) controller works together ...
Soontorn Odngam   +4 more
doaj   +1 more source

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