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A High Performance Space Vector Modulation - Direct Torque Controlled Induction Machine Drive based on Stator Flux Orientation Technique

open access: goldAdvances in Electrical and Computer Engineering, 2009
This paper proposes the design and implementation of a novel direct torque controlled induction machine drive system. The control system enjoys the advantages of stator vector control and conventional direct torque control and avoids some of the ...
BELMADANI, B.   +2 more
doaj   +3 more sources

Evaluating putative repellent ‘push’ and attractive ‘pull’ components for manipulating the odour orientation of host-seeking malaria vectors in the peri-domestic space [PDF]

open access: goldParasites & Vectors, 2021
Background Novel malaria vector control approaches aim to combine tools for maximum protection. This study aimed to evaluate novel and re-evaluate existing putative repellent ‘push’ and attractive ‘pull’ components for manipulating the odour orientation ...
Margaret M. Njoroge   +6 more
openalex   +2 more sources

Equivariant orientation of vector bundles over disconnected base spaces [PDF]

open access: bronzeProceedings of the London Mathematical Society
AbstractIn this paper, we view the equivariant orientation theory of equivariant vector bundles from the lenses of equivariant Picard spectra. This viewpoint allows us to identify, for a finite group , a precise condition under which an ‐orientation of a ‐equivariant vector bundle is encoded by a Thom class.
Prasit Bhattacharya, Foling Zou
openalex   +4 more sources

On the orientation of the pulsar space velocity vector relative to the spin axis [PDF]

open access: bronzeNature, 1977
A SIGNIFICANT parameter for pulsars for which proper motion data are available is the angle φ between the space velocity vector and the spin axis. There are eleven such pulsars (ref. 15 and personal communication from one of the authors). The angle between the spin axis projected on the plane of the sky and the proper motion vector has a value close to
Rajesh Kochhar
openalex   +2 more sources

ILoA: Indoor Localization Using Augmented Vector of Geomagnetic Field

open access: yesIEEE Access, 2020
In this article, we propose a new geomagnetic localization scheme, named ILoA, to address error accumulation and global localization. Global localization is a fundamental problem that determines the initial pose under global uncertainty.
Sangjae Lee, Seungwoo Chae, Dongsoo Han
doaj   +2 more sources

A New Approach for Measuring Sentiment Orientation based on Multi-Dimensional Vector Space [PDF]

open access: green, 2017
This study implements a vector space model approach to measure the sentiment orientations of words. Two representative vectors for positive/negative polarity are constructed using high-dimensional vec-tor space in both an unsupervised and a semi-supervised manner.
Youngsam Kim, Hyopil Shin
openalex   +3 more sources

Vector Spaces Of Light Interior Orientation-preserving C' Functions.

open access: green, 1960
PhD ; Mathematics ; University of Michigan, Horace H. Rackham School of Graduate Studies ; http://deepblue.lib.umich.edu/bitstream/2027.42/182612/2/6001746 ...
W Caldwell
openalex   +3 more sources

Induction Machine Broken-Bar Fault Diagnosis Using the Rotor Magnetic Field Space-Vector Orientation

open access: closedIEEE Transactions on Industry Applications, 2004
A new technique based on rotor magnetic field space vector orientation is presented to diagnose broken-bar faults in induction machines operating at steady state. In this technique, stator currents and voltages are used as inputs to compute and subsequently observe the rotor magnetic field orientation, which has a more significant "swing-like ...
Behrooz Mirafzal, N.A. Demerdash
  +5 more sources

On the probability distribution function of small-scale interplanetary magnetic field fluctuations [PDF]

open access: yesAnnales Geophysicae, 2004
In spite of a large number of papers dedicated to the study of MHD turbulence in the solar wind there are still some simple questions which have never been sufficiently addressed, such as: a) Do we really know how the magnetic field vector ...
R. Bruno   +6 more
doaj   +6 more sources

Field-Orientation Dependent Heat Capacity Measurements at Low Temperatures with a Vector Magnet System [PDF]

open access: yes, 2004
We describe a heat capacity measurement system for the study of the field-orientation dependence for temperatures down to 50 mK. A "Vector Magnet" combined with a mechanical rotator for the dewar enables the rotation of the magnetic field without ...
Bondarenko V. A.   +20 more
core   +4 more sources

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