Results 21 to 30 of about 5,073,723 (195)

Concept of a new overrunning clutch with the characteristic of reverse force transfer at high speed

open access: yesEngineering Reports, 2021
To extend the functionality of the overrunning clutch. A new overrunning clutch with the characteristic of reverse torque transfer direction at high speed is proposed in this paper.
Huiyong Zhao   +3 more
doaj   +1 more source

Prediction of the electromagnetic torque in synchronous machines through Maxwell stress harmonic filter (HFT) method [PDF]

open access: yes, 2006
For the calculation of torque in synchronous motors a local method is analysed, based on the Maxwell stress theory and the filtered contributions due to the harmonics of the magnetic vector potential in the motor air-gap.
Popescu, M.
core   +1 more source

Crossover from positive to negative optical torque in mesoscale optical matter

open access: yesNature Communications, 2018
Negative optical torque has been predicted theoretically, but experimental demonstrations have been scarce. Here, the authors show that the optical torque in a mesoscopic optical matter array can be reversed depending on number, separation and ...
Fei Han   +6 more
doaj   +1 more source

Effects of Vastus Lateralis Muscle Fascicle Length on Isokinetic Muscular Strength and Physical Fitness in Collegiate Athletes [PDF]

open access: yesThe Asian Journal of Kinesiology, 2020
OBJECTIVES The purpose of this study was to examine the effects of vastus lateralis muscle fascicle length on isokinetic muscle strength and physical fitness in collegiate athletes.
Kwang-Jin Lee, Ho-Seong Lee
doaj   +1 more source

Investigation of torque characteristics in a novel permanent magnet flux switching machine with an outer-rotor configuration [PDF]

open access: yes, 2014
This paper comprehensively investigates the torque characteristics of a novel permanent magnet flux switching machine with outer-rotor configuration.
Miao, Dong-Min   +3 more
core   +1 more source

Is there a relationship between isometric hamstrings-to-quadriceps torque ratio and athletes' plyometric performance?

open access: yesPLoS ONE, 2023
BackgroundThe application of the modified reactive strength index (RSImod) and isometric hamstrings to quadriceps (H:Q) torque ratio to monitoring the athletes' performance is well established, but their relationship to each other still remains unknown ...
Farideh Babakhani   +2 more
doaj   +1 more source

Effect of Body Position on Hamstring Muscle Group Average Torque [PDF]

open access: yesJournal of Orthopaedic & Sports Physical Therapy, 1990
The purpose of this investigation was to examine the effect of the supine and prone position on concentric and eccentric isokinetic strength of the hamstring muscle group. Twelve university female lacrosse players were tested for hamstring average torque on a Kinetic Communicator(R) dynamometer at 60 degrees /sec from the supine and prone positions ...
T W, Worrell   +3 more
openaire   +2 more sources

Assessment of torque components in brushless permanent-magnet machines through numerical analysis of the electromagnetic field [PDF]

open access: yes, 2005
For the calculation of torque in brushless (BL) alternating current motors a local method is proposed, based on the Maxwell stress theory and the filtered contributions due to the harmonics of the magnetic vector potential in the motor air gap.
Dellinger, S.J.   +4 more
core   +1 more source

Optimal Pole Ratio of Spoke-type Permanent Magnet Vernier Machines for Direct-drive Applications

open access: yesCES Transactions on Electrical Machines and Systems, 2022
Due to magnetic gearing effects, spoke-type permanent magnet vernier machines (ST-PMVMs) have the merit of high torque density, where an extra torque amplification coefficient, i.e., pole ratio (the pole-pair ratio of PMs to armature windings) is ...
Yu Zhao   +5 more
doaj   +1 more source

Magnet Shape Optimization to Reduce Pulsating Torque for a Five-Phase Permanent-Magnet Low-Speed Machine [PDF]

open access: yes, 2014
The author would like to thank S. Djebarri from the Research Institute of Naval Academy for his help with computing the machines with FEA program FEMM and F.
SCUILLER, Franck
core   +1 more source

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