Results 21 to 30 of about 1,823,632 (294)

Hybrid Filters To Damp Harmonic Resonance In Power Transmission Systems

open access: yesEletrônica de Potência, 2006
Problems related to harmonic propagation in transmission systems have been noticed in the last years. Passive filters, commonly used to attenuate noncharacteristic harmonics in HVDC systems, stay at risk of disconnection from the system due to ...
Lucas F. Encarnação   +4 more
doaj   +1 more source

Hybrid Manufactured Waveguide Resonators and Filters for mm-Wave Applications [PDF]

open access: yes, 2017
Additive and hybrid manufactured waveguide resonators and bandpass filters for mm-wave applications are presented. A Ka band 3D printed waveguide resonator with inductive windows and 28 GHz 5G band hybrid manufactured waveguide resonator and bandpass ...
Budimir, D.   +11 more
core   +1 more source

Effect of despeckling filters on the segmentation of ultrasound common carotid artery images

open access: yesBiomedical Journal, 2022
Background: Carotid intima-media thickness (IMT) measured in B-mode ultrasound image is an important indicator of Atherosclerosis disease. Speckle noise inherently present in ultrasounds’ thereby degrades the visual evaluation and limits the automated ...
Vaishali Narendra Naik   +2 more
doaj   +1 more source

Relative entropy rate based model selection for linear hybrid system filters of uncertain nonlinear systems [PDF]

open access: yes, 2013
Hybrid system representations have been exploited in a number of challenging modelling situations, including situations where the original nonlinear dynamics are too complex (or too imprecisely known) to be directly filtered.
Techakesari, Onvaree, Ford, Jason J.
core   +1 more source

OPTIMIZE THE PERFORMANCE OF ELECTRICAL EQUIPMENT IN GAS SEPARATION STATIONS (DEGASSING STATION DS ) AND ELECTRICAL SUBMERSIBLE PUMPS OF OIL EQUIPMENT FOR OIL RUMAILA FIELD

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2019
Annotation: There are various types of electrical equipment used in the extraction of oil at the Rumaila field, with an average voltage of 11 kV and a low voltage of 0.4 kV.
Majid Abdulhameed Abdulhy Al-Ali   +2 more
doaj   +1 more source

Effect of the Surface Treatment Process of Filter Bags on the Performance of Hybrid Electrostatic Precipitators and Bag Filters

open access: yesAtmosphere, 2022
Hybrid electrostatic precipitators consisting of electrostatic precipitation (ESP) and a bag filter are potential devices for ultralow emissions. The ESP captures and charges the particles; subsequently, the charged particles that escape enter the bag ...
Shaobo Xia   +3 more
doaj   +1 more source

Performance Analysis of Resampling Algorithms of Parallel/Distributed Particle Filters

open access: yesIEEE Access, 2021
Particle filters have been widely used in various fields due to their advantages in dealing with non-linear and/or non-Gaussian systems. A large number of particles are needed to guarantee the convergence of particle filters for the state estimation ...
Xudong Zhang   +3 more
doaj   +1 more source

Improved performance of gas turbine diagnostics using new noise‐removal techniques

open access: yesIET Signal Processing, 2021
Fault detection and identification (FDI) systems are responsible for detecting and identifying errors as fast as possible with high reliability. These systems should be robust against noise and avoid false warnings.
Mohsen Ensafjoo, Mir Saeed Safizadeh
doaj   +1 more source

Improving the quality of electricity in the power supply systems of the mineral resource complex with hybrid filter-compensating devices

open access: yesЗаписки Горного института, 2021
The urgency and necessity of choosing and justifying the structures of hybrid filter-compensating devices based on series and parallel active filters to improve the quality of electricity in the power supply systems of enterprises of the mineral resource
Yurii A. Sychev, Roman Yu. Zimin
doaj   +1 more source

Hybrid metasurfaces for simultaneous focusing and filtering

open access: yesOptics Letters, 2021
This work presents the design and fabrication of polymeric, structural optical filters that simultaneously focus light. These filters represent a novel, to the best of our knowledge, design at the boundary between diffractive optics and metasurfaces that may provide significant advantages for both digital and hyperspectral imaging.
Mansoor A. Sultan   +3 more
openaire   +3 more sources

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