Results 21 to 30 of about 17,191 (210)
Analysis and design optimization of an improved axially magnetized tubular permanent-magnet machine [PDF]
, 2004 This paper describes the analysis and design optimization of an improved axially magnetized tubular permanent-magnet machine. Compared with a conventional axially magnetized tubular machine, it has a higher specific force capability and requires less ...
Howe, D., Jewell, G.W., Wang, J.B.
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Speed control with low armature loss for very small sensorless brushed DC motors [PDF]
, 2009 A method for speed control of brushed dc motors is presented. It is particularly applicable to motors with armatures of less than 1 cm3. Motors with very small armatures are difficult to control using the usual pulsewidth-modulation (PWM) approach and ...
McLeish, J. +2 more
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IEEE Access, 2022 To solve the problem that the conventional vector control system of permanent magnet synchronous motor is susceptible to motor parameters and load disturbances, a sliding mode predictive current control strategy of permanent magnet synchronous motor with
Limin Hou, Jianhua Ma, Wei Wang
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Electrowetting: from basics to applications [PDF]
, 2005 Electrowetting has become one of the most widely used tools for manipulating tiny amounts of liquids on surfaces. Applications range from 'lab-on-a-chip' devices to adjustable lenses and new kinds of electronic displays. In the present article, we review
Baret, Jean-Christophe, Mugele, Frieder
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IEEE Access, 2022 This work presents a novel abc-based model applicable to surface-mounted permanent magnet AC (SM-PMAC) machines with sinusoidal and non-sinusoidal back-electromotive force (back-emf).
Saleh O. Edhah +2 more
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On the mean field dynamo with Hall effect [PDF]
, 2006 We study in the present paper how Hall effect modifies the quenching process of the electromotive force (e.m.f.) in Mean Field Dynamo (MFD) theories. We write down the evolution equations for the e.m.f. and for the large and small scale magnetic helicity,
A. H. Cerqueira +28 more
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Generation of coherent magnetic fields in sheared inhomogeneous turbulence: No need for rotation? [PDF]
, 2011 Coherent magnetic fields are often believed to be generated by the combination of stretching by differential rotation and turbulent amplification of magnetic field, via the so-called alpha effect. The latter is known to exist in helical turbulence, which
Eun-jin Kim +4 more
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IET Science, Measurement & Technology, 2018 Permanent magnet (PM) axial flux machines are well adopted in microelectromechanical systems application, which needs a short axial length. PM micromotors have special characteristics such as transition zone which made their analysis different from macro ones.
Mostafa Jafari Kermani Pour +2 more
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Speed Estimation of PMSM Based on a Super-Twisting Slide Mode Observer
Machines, 2022 To limit the high-frequency chattering originating from the conventional sliding mode observer in a PMSM sensorless control system of vacuum pumps and reduce the steady-state error caused by the phase lag of the coordinate system on the estimated speed ...
Long Li +3 more
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Issues in the Blandford-Znajek Process for GRB Inner Engine [PDF]
, 1999 Several issues regarding the Blandford-Znajek process are discussed to demonstrate that it can be an effective mechanism for powering the gamma ray bursts.
Bicak J. +9 more
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