Results 71 to 80 of about 10,052 (228)
A Review of Levitation Control Methods for Low- and Medium-Speed Maglev Systems
BuildingsMaglev transportation is a highly promising form of transportation for the future, primarily due to its friction-free operation, exceptional comfort, and low risk of derailment.
Qi Zhu, Su-Mei Wang, Yi-Qing Ni
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IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.This paper presents an innovative model predictive control (MPC) strategy that utilises three‐dimensional satisfaction space optimisation with an adjustable switching frequency. The proposed MPC strategy ensures excellent dynamic and steady‐state performance while maintaining an average switching frequency of approximately 300 Hz throughout the entire ...
Bo Yang +5 more
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Levitating Control System of Maglev Ruler Based on Active Disturbance Rejection Controller
Applied SciencesThe autonomous displacement and displacement measurement functions of the maglev ruler are performed by the mover core. The magnetic levitation ruler can serve as a viable alternative to the linear measurement system of a coordinate measuring machine ...
Jiyuan Sun +4 more
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Japanese activities in refrigeration technology [PDF]
, 1983 Recent activities in refrigeration technology in Japan are discussed. Stirling cycle refrigerators and magnetic refrigerators are discussed.
Fujita, T., Ishizaki, Y., Ohtsuka, T.
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A theoretical review of the operation of vibratory stress relief with particular reference to the stabilization of large-scale fabrications [PDF]
, 2011 Vibratory stress relief (VSR) is widely used on large welded fabrications to stabilize the structures so that they do not distort during further machining or during operational duty.
C Walker +6 more
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IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.With the consideration of the DC‐link voltage fluctuation, the motor output torque contains a large number of fluctuating components, which may trigger electromechanical coupling resonance (EMCR) and deteriorate the system control performance. In order to solve this problem, the model of the electromechanical coupled system is established, and the ...
Junwen Mu +3 more
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Coupled Dynamics Modeling and Validation of Maglev Vehicle and Bridge Systems
ActuatorsTo address the vehicle-bridge coupling vibration issue of the Qingyuan Maglev Tourist Line, it is necessary to establish a maglev vehicle–bridge coupling dynamics simulation model that reflects the actual line conditions.
Fei Zhou, Xiaolong Li
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IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.In this paper, a variety of primary‐excited permanent magnet linear motors (PMLMs) are analysed and compared and a double‐sided flux‐concentrating slot permanent magnet linear motor (DFS‐PMLM) is proposed. The structural parameters of the proposed motor are optimised.
Ying Wang +4 more
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Influence of Maglev Train Arc on Electromagnetic Disturbance of the Airport Sliding Beacon
机车电传动, 2020 In order to theoretically study the electromagnetic interference effect of the maglev train arc on the airport sliding beacon, one domestic maglev train line was selected and several typical frequency points during the working frequency band of the ...
Laisheng TONG +3 more
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Foreground and background text in retrieval [PDF]
, 2002 Our hypothesis is that certain clauses have foreground functions in text, while other clauses have background functions and that these functions are expressed or reflected in the syntactic structure of the clause.
Järvinen, Timo, Karlgren, Jussi
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