Results 101 to 110 of about 301,273 (301)
EnergiesSpeed, position, and load torque information are crucial for the stable control of wind turbines, and existing control methods heavily rely on position and torque sensors to obtain these parameters.
Ziyun Wu +4 more
doaj +1 more source
Sealing a rubber bladder between two sections of an accumulator [PDF]
, 1969 Leak-free clamping of a two section accumulator is accomplished by a flat metallic ring molded peripherally to the rubber flange of the bladder, and an inset rubber seal bonded to the face of the flange of each section.
Schartau, G. M.
core +1 more source
Advanced Functional Materials, EarlyView.Hydrocarbon membranes are a greener alternative to PFSA in PEM fuel cells, but degrade rapidly from radical attack. We present a novel strategy using poly(vinylphosphonic acid) (PVPA) as a local radical scavenger. Incorporated as an interfacial barrier, PVPA enhances chemical stability and significantly extends membrane lifetime under accelerated ...
Hendrik Sannemüller +6 more
wiley +1 more source
Optics used to measure torque at high rotational speeds [PDF]
, 1964 In measuring torque transmitted by a high speed rotation shaft, an apparatus has been devised which includes a shaft, an optical system and readout servomechanism.
Krsek, A., Jr., Tieferman, M.
core +1 more source
Conductive Bonding and System Architectures for High‐Performance Flexible Electronics
Advanced Functional Materials, EarlyView.This review outlines bonding technologies and structural design strategies that support high‐performance flexible and stretchable electronics. Bonding approaches such as surface‐activated bonding and anisotropic conductive films, together with system‐level architectures including buffer layers and island‐bridge structures, possess distinct mechanical ...
Kazuma Nakajima, Kenjiro Fukuda
wiley +1 more source
A numerical method to solve the Boltzmann equation for a spin valve
, 2007 We present a numerical algorithm to solve the Boltzmann equation for the electron distribution function in magnetic multilayer heterostructures with non-collinear magnetizations.
A. Zangwill +37 more
core +2 more sources
Advanced Functional Materials, EarlyView.MAGTWIST: A compact magnetic rotary actuator, enabling smooth, stepless rotation, and on‐demand locking. Inspired by peristalsis, a soft polymer belt generates a traveling‐wave, enabling 270° rotation when heated. Cooling stiffens the belt, locking it in position and enabling it to withstand high loads.
Simon Frieler +3 more
wiley +1 more source
Torque Vector Control and Direct Force Control in a Three-Phase Bearing-Less Induction Motor [PDF]
International Journal of Industrial Electronics, Control and OptimizationBearing-less induction motors (BLIMs) are suitable candidates for high-speed applications but suffer from low torque density and complex control issues due to the interaction of torque and levitation forces.
Reza Ghanizadeh, Hamed Azadrou
doaj +1 more source
Methods of attenuating wind turbine ac generator output variations [PDF]
Wind speed variation, tower blockage and structural and inertial factors produce unsteady torque in wind turbines. Methods for modifying the turbine torque so that steady torque is delivered to the coupled ac generator are discussed.
Gold, H.
core +1 more source
Advanced Functional Materials, EarlyView.Reducing power consumption in spintronic memory remains a major challenge due to the need for high current densities. A bilayer of gadolinium and holmium iron garnets enables purely temperature‐induced, nonvolatile magnetic switching with bistable states within a ±25 K range. This approach achieves up to 66‐fold lower energy use than current spin–orbit
Junseok Kim +3 more
wiley +1 more source