Results 81 to 90 of about 296,484 (303)

Module and vector space bases for spline spaces

open access: yesJournal of Approximation Theory, 1991
One way of investigating the dimension of and bases for d-variate polynomial spline spaces \(S^ r_ m(\Delta)\) of given smoothness r and polynomial degree m is to view the union \(S^ r(\Delta)=\cup_{m}S^ r_ m(\Delta)\) as a module over the polynomial ring \({\mathbb{R}}[x_ 1,...,x_ d]\). In this paper, it is shown how in certain cases a module basis of
openaire   +1 more source

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

open access: yesAdvanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone   +11 more
wiley   +1 more source

A Wide-Adjustable Sensorless IPMSM Speed Drive Based on Current Deviation Detection under Space-Vector Modulation

open access: yesEnergies, 2020
This paper investigates the implementation of a wide-adjustable sensorless interior permanent magnet synchronous motor drive based on current deviation detection under space-vector modulation.
Muhammad Syahril Mubarok   +3 more
doaj   +1 more source

Three level Induction Motor Torque Control Schemes for Electric Vehicles application [PDF]

open access: yes, 2014
- This work presents the results of an investigation into suitable torque control schemes for an electric vehicle application. The electric vehicle drive consists of rewound induction motors and a three-level IGBT inverter switching at 10 kHz.
Youb, Lamia
core  

Simplified multilevel space vector pulse-width modulation scheme based on two-level space vector pulse-width modulation

open access: yesIET Power Electronics, 2012
A novel simplified multilevel space vector pulse-width modulation (SVM) scheme is proposed based on the two-level SVM. The voltage vectors with same amplitude and phase angle are applied to the various power units of cascaded multilevel inverter (CMLI), and the refresh times of various vectors are delayed in order, thus the corresponding multilevel ...
F.J. Wu, K. Zhao, L. Sun
openaire   +1 more source

Pentagonal 2D Altermagnets: Material Screening and Altermagnetic Tunneling Junction Device Application

open access: yesAdvanced Functional Materials, EarlyView.
From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang   +8 more
wiley   +1 more source

Research on Combination of Random Zero-Vector PWM Controller

open access: yes机车电传动, 2018
According to theoretically equivalent principle, the space vector pulse width modulation technique was equivalent to zero sequence component injected sinusoidal pulse width modulation (SPWM).
ZHANG Guangyuan, WU Zhiyou, JIANG Tao
doaj  

Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials

open access: yesAdvanced Functional Materials, EarlyView.
The dielectric properties of clays are studied on the level of individual monolayers and functional double stacks. The material breakdown characteristics and charge storage performance are analyzed. For illustration, a defined charge pattern representing a cuneiform character is produced, written into a microscopic clay tile, referencing the origins of
Sebastian Gödrich   +6 more
wiley   +1 more source

Improvement of space vector modulation strategy of two-stage matrix converter

open access: yesGong-kuang zidonghua, 2013
In view of problems that space vector pulse width modulation strategy of two-stage matrix converter has high control complexity and cannot adjust input power factor of the two-stage matrix converter, a scheme of indirect space vector modulation strategy ...
DANG Cun-lu   +2 more
doaj  

Three-dimensional space vector modulation in abc coordinates for four-leg voltage source converters [PDF]

open access: yes, 2003
Four-leg inverters have been selected as one of the preferred power converter topologies for applications that require a precise control of neutral current, like active filters.
García Franquelo, Leopoldo   +5 more
core  

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