Results 11 to 20 of about 952,067 (300)

Calibration Procedure to Test the Effects of Multiple Influence Quantities on Low-Power Voltage Transformers

open access: yesSensors, 2020
The article presents a study on low-power voltage transformers (LPVTs). Considering their increasing spread among Smart Grids, it is fundamental to assess their accuracy behavior in as realistic conditions as possible.
Alessandro Mingotti   +2 more
doaj   +1 more source

Low-Power Voltage Transformer Smart Frequency Modeling and Output Prediction up to 2.5 kHz, Using Sinc-Response Approach

open access: yesSensors, 2020
The instrument transformers scenario is moving towards the adoption of a new generation of low-power instrument transformers. This disruptive change also requires that the modeling, characterization, and testing of those devices must be improved ...
Abbas Ghaderi   +3 more
doaj   +1 more source

A Phase Correlation Anti-Noise Displacement Estimation Method Based on PSD Phase Screening

open access: yesApplied Sciences, 2022
When using digital images to obtain the displacement of a structure, noise is always a factor that greatly affects the accuracy of the displacement results.
Yunsheng Zhang   +5 more
doaj   +1 more source

Displacement measuring interferometer for sub-nano meter resolution

open access: yesMeasurement: Sensors, 2021
In this presentation, the displacement measurement system using sinusoidal phase modulation interferometer and modified phase-locked loop is discussed.
Masato Higuchi   +2 more
doaj   +1 more source

Bounds on the volume fraction of 2-phase, 2-dimensional elastic bodies and on (stress, strain) pairs in composites [PDF]

open access: yes, 2011
Bounds are obtained on the volume fraction in a two-dimensional body containing two elastically isotropic materials with known bulk and shear moduli.
Milton, Graeme Walter, Nguyen, Loc Hoang
core   +2 more sources

Influence of wall roughness on two-phase displacement

open access: yesShenzhen Daxue xuebao. Ligong ban, 2022
In the development of oil and gas fields, water flooding is still the most important development method. The influence of the existence of rough channel on two-phase flow cannot be ignored.
LI Dajun   +4 more
doaj   +1 more source

Nomarski imaging interferometry to measure the displacement field of MEMS [PDF]

open access: yes, 2006
We propose to use a Nomarski imaging interferometer to measure the out-of-plane displacement field of MEMS. It is shown that the measured optical phase arises both from height and slope gradients.
Aswendt   +18 more
core   +3 more sources

A Reflective-Mode Phase-Variation Displacement Sensor

open access: yesIEEE Access, 2020
In this paper, a displacement sensor based on an open-ended step-impedance transmission line is reported. The sensor operates in reflection, and the output variable is the phase of the reflection coefficient.
Jonathan Munoz-Enano   +4 more
doaj   +1 more source

Optimized estimator for real-time dynamic displacement measurement using accelerometers [PDF]

open access: yes, 2016
This paper presents a method for optimizing the performance of a real-time, long term, and accurate accelerometer based displacement measurement technique, with no physical reference point.
Abir, Jonathan   +3 more
core   +1 more source

Job displacement costs of phasing out coal

open access: yesJournal of Public Economics, 2022
The reduction of carbon emissions will require a rapid phasing out of coal and the displacement of millions of coal miners. How much could this energy transition cost mining workers? We use the dramatic collapse of the UK coal industry to estimate the long-term impact on displaced miners.
Juan Pablo Rud   +3 more
openaire   +4 more sources

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