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Absence of orbital current torque in Ta/ferromagnet bilayers [PDF]
Nature CommunicationsIt has become a heated debate as to whether the orbital Hall effect of a material could generate a non-local orbital current and a non-zero spin-orbit torque on an adjacent magnetic layer.
Qianbiao Liu, Lijun Zhu
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Crossover from positive to negative optical torque in mesoscale optical matter [PDF]
Nature 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
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Associations Between Isokinetic Torque and External Load Metrics During Youth Soccer Matches [PDF]
SportsPhysical fitness, especially strength, is key for football performance and injury prevention, but its role in match running remains unclear. This study examined correlations between knee flexor and extensor isokinetic torque (60°/s, 180°/s, 300°/s) and ...
Yiannis Michailidis
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Positive Torque Modulation Method and Key Technology of Conventional Beam Pumping Unit
Energies, 2022 The large fluctuation of net torque and the existence of negative torque on the crank output shaft of the beam pumping unit are the decisive factors leading to its low efficiency and high energy consumption.
Jinchao Xu +3 more
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Kinematic and Dynamic Simulation Analysis of Modified Conventional Beam Pumping Unit
Energies, 2022 The large net torque fluctuations in the reducer output shafts of conventional beam pumping units and the existence of negative torque are the decisive factors that lead to their low efficiency and high energy consumption. This study developed a positive
Jinchao Xu, Wei Li, Siyuan Meng
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eJournal of Oral Maxillofacial Research, 2022 Objectives: The purpose of this experimental study was to investigate the correlation between the frictional resistance torque of tap drilling prior to implant placement and the primary stability after implant placement.
Kaien Wakamatsu +5 more
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Alexandria Engineering Journal, 2023 An online torque sharing function (TSF) with instantaneous torque error compensation method for switched reluctance machines is proposed to maintain a minimized ripple operation.
Ufuk Genc, Burak Tekgun
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Control of DFIG based wind generation systems under unbalanced network supply [PDF]
, 2007 This paper develops a dynamic model and control scheme for DFIG systems to improve the performance and stability under unbalanced grid conditions. A dynamic DFIG model containing the positive and negative sequence components is presented using stator ...
Wang, Yi, Xu, L.
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Reliability design of relief groove for torque shaft of shearer
Advances in Mechanical Engineering, 2020 On cutting coal, the cutting resistance of a shearer may change suddenly due to uneven coal quality. It can lead to sudden acceleration of the cutting motor, deceleration, overload shutdown, and even burnout of the motor.
Hongbin Gao, Qianqian Zhang
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A Method to Determine the Torque Ripple Harmonic Reduction in Skewed Synchronous Reluctance Machines
Applied Sciences, 2023 In this paper, a discrete skew methodology is presented to understand the effect of skewing angle on electromagnetic torque in SynRM design. A new approach is proposed to estimate the amplitude of each torque ripple component as a function of skewing ...
César Gallardo +3 more
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