Results 21 to 30 of about 197,249 (302)

Measuring Spiral Arm Torques: Results for M100 [PDF]

open access: yesThe Astronomical Journal, 1995
Uuencoded compressed PostScript (300k) - 26 pages, figs. 3-9; submitted to AJ. Full PostScript version (with all figures) is available through anonymous ftp at ftp://astro.princeton.edu/ognedin/Torque/paper.ps or ftp://astro.princeton.edu/library/preprints/pop613.ps.Z or through WWW http://www.astro.princeton.edu/~library/prep ...
GNEDIN, OY, GOODMAN, J, FREI, Z
openaire   +3 more sources

Flux observer algorithms for direct torque control of brushless doubly-fed reluctance machines [PDF]

open access: yes, 2009
Direct Torque Control (DTC) has been extensively researched and applied to most AC machines during the last two decades. Its first application to the Brushless Doubly-Fed Reluctance Machine (BDFRM), a promising cost-effective candidate for drive and ...
Chaal, Hamza, Jovanovic, Milutin
core   +2 more sources

A Metrological Characterization Approximation for the New Torque Measurement System in Wind Turbines Test Benches

open access: yesIEEE Access, 2019
This paper presents the new transfer standard for torque measurements in the MN·m range and its metrological characterization through FEM analyses.
Raquel Maria Lorente-Pedreille   +3 more
doaj   +1 more source

Resonance Measurement of Nonlocal Spin Torque in a Three-Terminal Magnetic Device

open access: yes, 2012
A pure spin current generated within a nonlocal spin valve can exert a spin transfer torque on a nanomagnet. This nonlocal torque enables new design schemes for magnetic memory devices that do not require the application of large voltages across tunnel ...
Buhrman, R. A.   +7 more
core   +1 more source

MRI investigation of granular interface rheology using a new cylinder shear apparatus [PDF]

open access: yes, 2009
The rheology of granular materials near an interface is investigated through proton magnetic resonance imaging. A new cylinder shear apparatus has been inserted in the MRI device, which allows the control of the radial confining pressure exerted by the ...
Alain Corfdir   +66 more
core   +5 more sources

Effect of Saturation on Field Oriented Control of the New Designed Reluctance Synchronous Motor

open access: yesEnergies, 2018
In this paper the effect of saturation on torque production of a reluctance synchronous motor (RSM), which was originally built as an induction motor (IM), is investigated.
Pavol Rafajdus   +4 more
doaj   +1 more source

A Spin-Mechanical Device for Detection and Control of Spin Current by Nanomechanical Torque

open access: yes, 2004
We propose a spin-mechanical device to control and detect spin currents by mechanical torque. Our hybrid nano-electro-mechanical device, which contains a nanowire with a ferromagnetic-nonmagnetic interface, is designed to measure or induce spin polarized
A. Aharoni   +17 more
core   +1 more source

Development of a Method to Identify in-Plane Anisotropy Axes in Soft Magnetic Materials Using a Standard Vibrating Sample Magnetometer [PDF]

open access: yes, 2015
A method of identifying in-plane anisotropy axes in soft magnetic materials has been developed using an in-field-only measurement technique. The method is based on an extended bi-axial vibrating sample magnetometer (VSM) technique that simulates the ...
Bissell, Phil   +3 more
core   +2 more sources

Investigating wind turbine dynamic transient loads using contactless shaft torque measurements

open access: yesThe Journal of Engineering, 2019
The wind industry is showing increasing awareness about the importance of long-term direct shaft mechanical torque measurements to fully understand wind turbine (WT) dynamics, adopt proactive solutions for extreme load mitigation and enhance condition ...
Donatella Zappalá   +3 more
doaj   +1 more source

Sensorless torque estimation in multidegree-of-freedom flexible systems [PDF]

open access: yes, 2009
This paper presents a sensorless torque estimation algorithm for multidegree-of-freedom flexible systems. The proposed algorithm makes it possible to estimate externally applied torques due to flexible system s interaction with the environment without ...
Khalil, Islam S. M.   +3 more
core   +1 more source

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