Results 11 to 20 of about 5,312 (258)

Frequency-Adaptive Modified Comb-Filter-Based Phase-Locked Loop for a Doubly-Fed Adjustable-Speed Pumped-Storage Hydropower Plant under Distorted Grid Conditions

open access: yesEnergies, 2017
The control system of a doubly-fed adjustable-speed pumped-storage hydropower plant needs phase-locked loops (PLLs) to obtain the phase angle of grid voltage.
Wei Luo, Jianguo Jiang, He Liu
doaj   +1 more source

Understanding of the Coherent Demodulation with Phase-Locked Loop

open access: yesMATEC Web of Conferences, 2018
The phase-locked loop (PLL) technology is a very important technology in the communication field. With the development of electronic technology toward digitalization, the phase-locked processing of signal needs to be realized in digital way.
Zhai Bingcong
doaj   +1 more source

A Resolution Control Loop for TDC-Based Phase Detectors in ADPLLs

open access: yesIEEE Access, 2023
This paper proposes a resolution control loop that runs in background to control the time resolution of a mid-rise Time to Digital Converter (TDC) used as a phase detector in All-Digital Phase Locked Loops (ADPLLs).
Abdelrahman Habib   +2 more
doaj   +1 more source

An all-digital phase-locked loop based on variable phase accumulator

open access: yesDianzi Jishu Yingyong, 2019
This paper presents a novel all-digital phase-locked loop with variable phase accumulator circuit structure. The design of the system is completed by using EDA technology, and the system simulation experiment is carried out by using ModelSim software ...
Yang Mengwei, Tian Fan, Shan Changhong
doaj   +1 more source

All digital phase-locked loop / Visiškai skaitmeninė fazės derinimo kilpa

open access: yesMokslas: Lietuvos Ateitis, 2013
The paper reviews working principles of phase-locked loop and drawbacks of classical PLL structure in nanometric technologies. It is proposed to replace the classical structure by all-digital phase-locked loop structure. Authors described the main blocks
Marijan Jurgo
doaj   +1 more source

A smart DPLL for robust carrier tracking systems using uncertain rule-based IT2 fuzzy controllers

open access: yesEngineering Science and Technology, an International Journal, 2020
The carrier tracking synchronizes the receiver and transmitter oscillators with each other’s and is adopted as a closed-loop structure known as the phase-locked loop (PLL).
Mohieddin Moradi, Mehdi Ehsanian
doaj   +1 more source

A Study on Stability Control of Grid Connected DC Distribution System Based on Second Order Generalized Integrator-Frequency Locked Loop (SOGI-FLL)

open access: yesApplied Sciences, 2018
This paper studies a second order generalized integrator-frequency locked loop (SOGI-FLL) control scheme applicable for 3-phase alternating current/direct current (AC/DC) pulse width modulation (PWM) converters used in DC distribution systems.
Jin-Wook Kang   +5 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

open access: yesAdvanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas   +6 more
wiley   +1 more source

Improvement of methods and means of control of deviations from straightness by using acousto-optic heterodyne laser measuring systems [PDF]

open access: yesОмский научный вестник, 2019
The article deals with the construction of high-precision acoustooptic (AO) heterodyne laser measurement systems for monitoring deviations from straightness when working in continuous mode with phase-digital Δφ(Δl y )–ΔNout and frequency-digital Δf ...
E. V. Leun
doaj   +1 more source

From Photoalignment to Structured Light: Liquid Crystal Platforms for Beam Shaping and Complex Wavefronts

open access: yesAdvanced Functional Materials, EarlyView.
Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou   +6 more
wiley   +1 more source

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