Results 21 to 30 of about 4,154,888 (239)

Development of magnetic bearing device for analysing external forces in arbitrary trajectory to rotor system

open access: yesNihon Kikai Gakkai ronbunshu, 2018
In design of rotating machines, analysis of external force is important for stable rotating operation. The various external forces such as unbalance force, seal contact force and rotor dynamic fluid force effect on the rotor system, dynamic ...
Junya KATO   +3 more
doaj   +1 more source

LOOP QUANTIZATION OF SHAPE DYNAMICS [PDF]

open access: yesThe Thirteenth Marcel Grossmann Meeting, 2015
Loop Quantum Gravity (LQG) is a promising approach to quantum gravity, in particular because it is based on a rigorous quantization of the kinematics of gravity. A difficult and still open problem in the LQG program is the construction of the physical Hilbert space for pure quantum gravity.
openaire   +2 more sources

Real-Time Implementation of Robust Loop-Shaping Controller for a VSC HVDC System

open access: yesEnergies, 2021
Voltage source converter (VSC) based HVDC systems are one of the most promising technologies for high voltage bulk power transmission. The reliability and stability of a VSC-based HVDC system greatly depends on the design of a proper controller for the ...
Syed F. Faisal   +2 more
doaj   +1 more source

Shape of cosmic string loops

open access: yesPhysical Review D, 2011
Complicated cosmic string loops will fragment until they reach simple, non-intersecting ("stable") configurations. Through extensive numerical study we characterize these attractor loop shapes including their length, velocity, kink, and cusp distributions.
Copi, Craig J, Vachaspati, Tanmay
openaire   +3 more sources

Mode decomposition approach in robust control design for horizontal axis wind turbines

open access: yesWind Energy, 2020
A robust multivariable strategy for pitch and torque control design of variable‐speed variable‐pitch wind turbines in the full load region is introduced in this paper.
Ali Poureh, Amin Nobakhti
doaj   +1 more source

A fractional‐N MASH2‐k FDC phase‐locked loop architecture enabling higher‐order quantisation noise shaping

open access: yesElectronics Letters, 2022
The quantisation noise contribution of a conventional FDC phase‐locked loop (PLL) is still high due to the only second‐order noise‐shaping capability.
Ryoga Iwashita   +3 more
doaj   +1 more source

FLOreS - Fractional order loop shaping MATLAB toolbox [PDF]

open access: yesarXiv.org, 2018
A novel toolbox named FLOreS is presented for intuitive design of fractional order controllers (FOC) using industry standard loop shaping technique. This will allow control engineers to use frequency response data (FRD) of the plant to design FOCs by ...
Lennart van Duist   +4 more
semanticscholar   +1 more source

A 3.7-mW 12.5-MHz 81-dB SNDR 4th-Order Continuous-Time DSM With Single-OTA and 2nd-Order Noise-Shaping SAR

open access: yesIEEE Open Journal of the Solid-State Circuits Society, 2022
This article presents a hybrid 4th-order delta–sigma modulator (DSM). It combines a continuous-time (CT) loop filter and a discrete-time (DT) passive 2nd-order noise-shaping SAR (NS-SAR). Since the 2nd-order NS-SAR is robust against PVT variation,
Wei Shi   +7 more
doaj   +1 more source

Structure-specified H∞ loop shaping control for balancing of bicycle robots: A particle swarm optimization approach [PDF]

open access: yes, 2010
In this paper, the particle swarm optimization (PSO) algorithm was used to design the structure-specified H∞ loop shaping controllers for balancing of bicycle robots.
Bui T. T.   +4 more
core   +1 more source

Magnetic-head positioning control of HDDs with improved H∞ controller by Robust Controller Bode (RCBode) plot

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2018
In this paper, we present a robust controller design method for a magnetic-head positioning system in a hard disk drive (HDD) based on the H∞ control theory and the Robust Controller Bode (RCBode) plot.
Jun ITO, Takenori ATSUMI
doaj   +1 more source

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