Results 11 to 20 of about 2,979,826 (304)

CARRIER SIGNAL INJECTION BASED SENSORLESS CONTROL OF PERMANENT MAGNET BRUSHLESS AC MACHINES [PDF]

open access: yes, 2012
This thesis is focused on the carrier signal injection based sensorless control of Permanent Magnet (PM) Brushless AC (BLAC) machines. Based on the machine saliency property, carrier signal injection based sensorless techniques have been well developed ...
Gong, Liming
core   +6 more sources

Analysis of Noise Coupling From a Power Distribution Network to Signal Traces in High-Speed Multilayer Printed Circuit Boards [PDF]

open access: yes, 2006
As layout density increases in highly integrated multilayer printed circuit boards (PCBs), the noise that exists in the power distribution network (PDN) is increasingly coupled to the signal traces, and precise modeling to describe the coupling ...
Baek, Seungyong   +5 more
core   +2 more sources

A slot antenna array with low mutual coupling for use on small mobile terminals [PDF]

open access: yes, 2011
In order to take full advantage of the benefits to be obtained by using MIMO techniques for mobile communications, it is necessary to use an antenna array which is both compact and also has low mutual coupling between ports.
Paul, DL   +5 more
core   +1 more source

Coupling Influence on Signal Readout of a Dual-Parameter LC Resonant System

open access: yesAdvances in Mathematical Physics, 2015
Dual-parameter inductive-capacitive (LC) resonant sensor is gradually becoming the measurement trend in complex harsh environments; however, the coupling between inductors greatly affects the readout signal, which becomes very difficult to resolve by ...
Jijun Xiong   +6 more
doaj   +1 more source

Influence of dielectric layer thickness and roughness on topographic effects in magnetic force microscopy

open access: yesBeilstein Journal of Nanotechnology, 2019
Magnetic force microscopy (MFM) has become a widely used tool for the characterization of magnetic properties. However, the magnetic signal can be overlapped by additional forces acting on the tip such as electrostatic forces.
Alexander Krivcov   +4 more
doaj   +1 more source

Novel reclosure scheme of MMC-HVDC system based on characteristic signal injection

open access: yesThe Journal of Engineering, 2018
Adaptive reclosing of AC line discriminates temporary faults and permanent faults by the coupling relationship between fault phase and the sound phase.
Ting Wang   +6 more
doaj   +1 more source

Effect of ultrasonic coupling media and surface roughness on contact transfer loss

open access: yesCogent Engineering, 2022
The study identifies and evaluates differences in contact transfer losses with different coupling media and surface roughnesses Ra between 0.1 and 7 µm.
Darjo Zuljan
doaj   +1 more source

Non-Intrusive Cable Fault Diagnosis Based on Inductive Directional Coupling

open access: yesSensors, 2018
This paper presents and applies an inductive directional coupling technology based on spread spectrum time domain reflectometry (SSTDR) for non-intrusive power cable fault diagnosis.
Suyang Hu   +5 more
doaj   +1 more source

Critically coupled Fabry–Perot cavity with high signal contrast for refractive index sensing

open access: yesScientific Reports, 2021
Perfect absorption at a resonance wavelength and extremely low absorption at the wavelength range of off-resonance in a one-port optical cavity is required for refractive index (RI) sensing with high signal contrast.
Gyeong Cheol Park, Kwangwook Park
doaj   +1 more source

Enhanced signal coupling in wide-field fiber-coupled imagers

open access: yesOptics Express, 2015
Some high-performance imaging systems, including wide angle "monocentric" lenses made of concentric spherical shells, form a deeply curved image surface coupled to focal plane sensors by optical fiber bundles with a curved input and flat output face. However, refraction at the angled input facet limits the range of input angles, even for fiber bundles ...
Ashkan, Arianpour   +3 more
openaire   +2 more sources

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