Results 71 to 80 of about 5,555 (274)
Mechanical Engineering Journal, 2017 Bearingless machines are used for a variety of applications with demand for low mechanical loss, low wear and low contamination. These machines use contact-free magnetic suspension to levitate the rotor. The control of the machine requires precise radial
Tobias WELLERDIECK +2 more
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IET Electric Power Applications, Volume 18, Issue 10, Page 1293-1304, October 2024.An analytical and optimisation method is presented to improve the air‐gap magnetic field of the surface‐mount permanent magnet machine with multi‐level array magnets, which can reduce air‐gap magnetic field harmonics and torque ripple. Considering the influence of magnets relative permeability, magnets remanence, stator slot and arc coefficient on air ...
Longxuan Li +4 more
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Topology Choice and Optimization of a Bearingless Flux-Switching Motor with a Combined Winding Set
Machines, 2018 The purpose of this paper is to choose a new topology for bearingless flux-switching slice motors, regarding the number of stator and rotor poles, with a combined winding set.
Vedran Jurdana +2 more
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Experimentally determined flutter from two- and three-bladed model bearingless rotors in hover [PDF]
, 1985 A series of experiments was performed on a 1.8-m-diam model rotor in hover for the principal purpose of investigating the lead-lag stability of isolated bearingless rotors.
Bousman, W. G., Dawson, S.
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ActuatorsThe majority of bearingless permanent magnet slice motors (BPMSMs) used in commercially available rotary blood pumps use a two-phase configuration, but it is unclear as to whether or not a comparable three-phase configuration would offer a better ...
Jonathan E. M. Lawley +3 more
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NASA helicopter transmission system technology program [PDF]
, 1983 The purpose of the NASA Helicopter Transmission System Technology Program is to improve specific mechanical components and the technology for combining these into advanced drive systems to make helicopters more viable and cost competitive for commerical ...
Zaretsky, E. V.
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MAXIMUM TORQUE OUTPUT STRATEGY OF BEARINGLESS INDUCTION MOTOR IN THE FIELD-WEAKENING REGION [PDF]
, 2022 Wenxin Fang +3 more
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Electronics Letters, Volume 60, Issue 3, February 2024.This study analyzed the electromagnetic characteristics of the suspension force in the axial split‐phase bearingless switched reluctance motor to characterize the time‐varying suspension system accurately. The study elucidated the hinge relationship between the magnetic flux in the suspension system and the rotor position.
Fuguang Wen, Kai Xie, Yu Zou, Ye Yuan
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Fuzzy variable gain robust control of active magnetic bearings rigid rotor system
IET Electric Power Applications, Volume 18, Issue 1, Page 90-106, January 2024.First, the T‐S fuzzy model of four‐degree‐of‐freedom (4‐DOF) AMBs was established based on the 4‐DOF AMBs rigid rotor equivalent coupling model optimised by the μ‐gap metric. Then, the non‐dominated sorting genetic algorithm II (NSGA‐II) was used to find the relative optimal weight function value of H‐infinity robust controller when AMBs system was at ...
Yuhao Xu +4 more
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Design and Analysis of Asymmetric Rotor Pole Type Bearingless Switched Reluctance Motor
CES Transactions on Electrical Machines and Systems, 2022 Bearingless switched reluctance motor (BSRM) not only combines the merits of bearingless motor (BM) and switched reluctance motor (SRM), but also decreases the vibration and acoustic noise of SRM, so it could be a strong candidate for high-speed driving ...
Zhenyao Xu, Qingguo Yu, Fengge Zhang
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