Results 51 to 60 of about 50,950 (315)
Speed control for permanent magnet synchronous motor based on an improved extended state observer
Advances in Mechanical Engineering, 2018 An improved extended state observer is designed to eliminate the influences of speed control for a permanent magnet synchronous motor. The improved extended state observer is designed based on a new nonlinear function.
Bingyou Liu
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Energetic Factors of a Frequency-Controlled Synchronous Electric Drive
Известия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2018 As compared to asynchronous frequency-controlled electric drives, synchronous drives are characterized by lower power losses, rigid mechanical characteristics without speed feedback and by the simplest law of frequency control (when the voltage changes ...
B. I. Firago, S. V. Aleksandrovsky
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Molecular Oncology, EarlyView.Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson +9 more
wiley +1 more source
Synchronous motors stability estimation methodologies under three-phase faults in power supply grids
Известия высших учебных заведений: Проблемы энергетики, 2019 This article presents the three phase short circuit impact on synchronous motors stability research results. The analysis of the researches done in this field shows that they neglect following features in motor operation: the voltage sag form ...
A. I. Fedotov +2 more
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Torque prediction using the flux-MMF diagram in AC, DC, and reluctance motors [PDF]
, 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
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Hijacking emergency granulopoiesis: Neutrophil ontogeny and reprogramming in cancer
Molecular Oncology, EarlyView.Neutrophils are highly plastic innate immune cells; their functions in cancer extend beyond the tumour microenvironment. This Review summarises current understanding of neutrophil maturation and heterogeneity and highlights tumour‐induced granulopoiesis as a systemic programme that expands immature, immunosuppressive neutrophils via tumour‐derived ...
Gabriela Marinescu, Yi Feng
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Energies, 2017 This paper proposes a back electromotive force estimation error compensation method for accurate rotor position estimation of surface mounted permanent magnet synchronous motors.
Tae-Uk Jung +2 more
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Intelligent Permanent Magnet Motor-Based Servo Drive System Used for Automated Tuning of Piano
Energies, 2021 This paper presents an intelligent permanent magnet synchronous motor-based servo drive system used in automated piano tuning applications. The permanent magnet synchronous motor-based drives are able to improve the accuracy of the piano tuning process ...
Ying Zhou, Zuyu Wu, Yutong Wu
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Sensorless position control of permanent magnet motors with pulsating current injection and compensation of motor end-effects [PDF]
, 2011 The sensorless position control of permanent-magnet motors is successfully implemented by superimposing a high-frequency voltage signal on the voltage reference or adding a high-frequency current signal to the current reference.
G Pellegrino +13 more
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FEBS Open Bio, EarlyView.Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
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