Results 21 to 30 of about 987 (234)
Molecular rotor as a high-temperature Brownian motor
Хімія, фізика та технологія поверхні, 2016 The aim of the present work is to develop a theory of high-temperature polar molecular rotors, the rotation of which is initiated by an external alternating electric field.
O. Ye. Tsomyk +2 more
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Investigation on manufacturing of small-sized stepped rotor wheel by engraving milling process [PDF]
FME TransactionsThis study aims to explore the potential of the engraving milling process to manufacture 3D structures and layouts like rotor wheels. An experimental study was carried out to manufacture a stepped rotor wheel from EN8 steel blank using a computer numeric
Chaubey Sujeet Kumar, Gupta Kapil
doaj +1 more source
Torque Analysis of Permanent-Magnet Flux Switching Machines With Rotor Step Skewing [PDF]
IEEE Transactions on Magnetics, 2012 This paper investigates the torque characteristics of permanent-magnet flux switching (PMFS) machines with rotor step skewing. The cogging torque, torque ripple, and average output torque of a PMFS machine with a common stator and different rotor pole widths and rotor pole numbers are first established using two-dimensional (2-D) finite element ...
Fei, Wei-Zhong +2 more
openaire +3 more sources
Rotor oscillation damping of a stepping motor by sliding mode control
Electrical Engineering in Japan, 1997 Stepping motors are used mainly in OA and FA systems due to the merit of their digital driving behavior using switching devices. They are driven by closed-loop control in the systems where special performance such as prevention of out of synchronism or highspeed drive is required.It is well known that rotor oscillation is one of the principal problems ...
Takeshi Miura, Toshiyuki Taniguchi
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Structural Asymmetry and Kinetic Limping of Single Rotary F-ATP Synthases
Molecules, 2019 F-ATP synthases use proton flow through the FO domain to synthesize ATP in the F1 domain. In Escherichia coli, the enzyme consists of rotor subunits γεc10 and stator subunits (αβ)3δab2.
Hendrik Sielaff +4 more
doaj +1 more source
Current Tracking Adaptive Control of Brushless DC Motors
International Journal of Adaptive Control and Signal Processing, EarlyView.In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García +3 more
wiley +1 more source
Advanced Functional Materials, EarlyView.In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund +6 more
wiley +1 more source
International Journal of Rotating Machinery, 2000 In the paper, dynamic investigations of the rotor shaft systems are performed by means of the discrete-continuous mechanical models. In these models the rotor shaft segments are represented by the rotating cylindrical flexurally and torsionally ...
Tomasz Szolc
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Advanced Functional Materials, EarlyView.Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana +2 more
wiley +1 more source
Electroactive Metal–Organic Frameworks for Electrocatalysis
Advanced Functional Materials, EarlyView.Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska +7 more
wiley +1 more source