Results 71 to 80 of about 645,990 (304)

Brushless DC motor with dual windings [PDF]

open access: yes, 1971
Motor has high starting torque and high running speeds. Control system consists of Hall effect generator/resolver and associated electronic amplifiers and switches.
Auclair, G. F.   +2 more
core   +1 more source

Dynamics stabilization and transport coherency in a rocking ratchet for cold atoms [PDF]

open access: yes, 2010
Cold atoms in optical lattices have emerged as an ideal system to investigate the ratchet effect, as demonstrated by several recent experiments. In this work we analyze theoretically two aspects of ac driven transport in cold atoms ratchets.
Kolton, A. B., Renzoni, F.
core   +2 more sources

In‐Depth Profiling Highlights the Effect of Efgartigimod on Peripheral Innate and Adaptive Immune Cells in Myasthenia Gravis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Myasthenia gravis (MG) is an autoimmune disorder characterized by antibody‐mediated complement activation. Efgartigimod, a neonatal Fc receptor (FcRn) antagonist, is approved for treating generalized MG (gMG). However, its modulatory effects on upstream innate and adaptive immune cells remain largely unexplored.
Lei Jin   +11 more
wiley   +1 more source

Diseño e implementación de un módulo didáctico de un Drive Troceador para el control de una máquina de DC en cuatro cuadrantes destinado al Laboratorio de Control Eléctrico y PLC’s

open access: yesMaskay, 2011
En el laboratorio de Control Eléctrico y PLC´s se realizó un análisis de reconocimiento de los módulos didácticos, observando que no dispone de un módulo troceador DC/DC para el control de un motor DC en 4 cuadrantes.
Ismael Guamani, Marcelo Silva
doaj   +1 more source

DC Motors Speed Control

open access: yesDEStech Transactions on Engineering and Technology Research, 2017
A DC motor is a device that converts electrical energy into mechanical energy. DC motors are inherently high-speed and low-torque. In this paper, we will use gears to solve the problem of lowering the speed and increasing the torque provided by the motor.
Yan-yan JI, Michael HVIDSTEN
openaire   +2 more sources

Developmental, Neuroanatomical and Cellular Expression of Genes Causing Dystonia

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Dystonia is one of the most common movement disorders, with variants in multiple genes identified as causative. However, an understanding of which developmental stages, brain regions, and cell types are most relevant is crucial for developing relevant disease models and therapeutics.
Darren Cameron   +5 more
wiley   +1 more source

Controller for computer control of brushless dc motors [PDF]

open access: yes, 1981
A motor speed and torque controller for brushless d.c. motors provides an unusually smooth torque control arrangement. The controller provides a means for controlling a current waveform in each winding of a brushless dc motor by synchronization of an ...
Hieda, L. S.
core   +1 more source

Torque prediction using the flux-MMF diagram in AC, DC, and reluctance motors [PDF]

open access: yes, 1996
This paper uses the flux-MMF diagram to compare and contrast the torque production mechanism in seven common types of electric motor. The flux-MMF diagram is a generalized version of the flux-linkage versus current (ψ-i) diagram for switched-reluctance ...
Deodhar, R.P.   +3 more
core   +1 more source

Cutaneous Phosphorylated Alpha‐Synuclein in Lewy Body Dementia

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To determine the test performance of cutaneous phosphorylated alpha‐synuclein (P‐SYN) in dementia with Lewy bodies (DLB), individuals with reduced Montreal Cognitive Assessment (MoCA) and healthy controls. Methods This is the first subgroup analysis of the Synuclein‐One study, a prospective, blinded study evaluating P‐SYN detection ...
Christopher H. Gibbons   +31 more
wiley   +1 more source

Performance of a 14.9-kW laminated-frame dc series motor with chopper controller [PDF]

open access: yes
Traction motor using two types of excitation: ripple free dc from a motor generator set for baseline data and chopped dc as supplied by a battery and chopper controller was tested.
Schwab, J. R.
core   +1 more source

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