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Roman Gozdur
The topic of this paper is modeling based on Hamiltonian spin interactions. Preliminary studies on the identification of quasi-static magnetizing field in a magnetic system were presented. The random-field Ising model was then used to simulate the simpli...
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Hugo Hernán Ortiz-Álvarez, Francy Nelly Jiménez-García, Carolina Márquez-Narváez, José Dario Agudelo-Giraldo and Elisabeth Restrepo-Parra
In this work, Monte Carlo simulations of magnetic properties of thin films, including the influence of an external pressure, are presented. These simulations were developed using a Hamiltonian composed by terms that represent the exchange interaction, di...
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Zitong Wang, Enrang Zheng, Jianguo Liu and Tuo Guo
Traditional methods of orthogonal basis function decomposition have been extensively used to detect magnetic anomaly signals. However, the determination of the relative velocity between the detection platform and the magnetic target remains elusive in pr...
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Bart Wymeersch, Frederik De Belie, Claus B. Rasmussen and Lieven Vandevelde
Line start permanent magnet synchronous motors (LS-PMSM) are energy-efficient synchronous motors that can start asynchronously due to a squirrel cage in the rotor. The drawback, however, with this motor type is the chance of failure to synchronize after ...
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Bang-Hyun Jo, Dae-Sung Jang, Jai-Hyuk Hwang and Yong-Hoon Choi
The landing gear of an aircraft serves to mitigate the vibration and impact forces transmitted from the ground to the fuselage. This paper addresses magneto-rheological (MR) damper landing gear, which provides high shock absorption efficiency and excelle...
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Giancarlo Cordeiro Costa, Marcelo Azevedo Neves, Agnaldo Souza Pereira
This work presents a new method for estimation of Jc as a bulk characteristic of YBCO blocks. The experimental magnetic interaction force between a SmCo permanent magnet and a YBCO block was compared to finite element method (FEM) simulations r...
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Giancarlo Cordeiro Costa, Marcelo Azevedo Neves, Agnaldo Souza Pereira
This work presents a new method for estimation of Jc as a bulk characteristic of YBCO blocks. The experimental magnetic interaction force between a SmCo permanent magnet and a YBCO block was compared to finite element method (FEM) simulations r...
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Jian Qin, Zhenquan Zhang, Xuening Song, Shuting Huang, Yanjun Liu and Gang Xue
In order to enhance the power generation efficiency and reliability of wave energy converters (WECs), an enclosed inertial WEC with a magnetic nonlinear stiffness mechanism (nonlinear EIWEC) is proposed in this paper. A mathematical model of the nonlinea...
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Yu Wang, Yujie Wang, Yaxin Li and Cheng Ren
This paper proposes a hybrid propulsion-based small underwater robot for robust trajectory tracking control in a harsh and complex underwater environment. The robot is equipped with a Coanda-effect jet thruster and a pair of propeller-based reconfigurabl...
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Qi Liu, Yong Li, Yanlin Hu and Wei Mao
The objective of this study is to investigate the effects of a magnetic field gradient on the performance of a magnetically shielded Hall thruster. The Particle-in-cell with Monte Carlo collision method (PIC-MCC) is used to simulate the discharge process...
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Sonapreetha Mohan Radha, Seong Hoon Choi, Jae Ho Lee, Jung Hoon Oh, In-Kui Cho and Ick-Jae Yoon
In this paper, we propose a ferrite-loaded inverted microstrip line (IML)-based artificial magnetic conductor (AMC) with a novel design that can provide complete magnetic shielding at the backside of the transmitting (Tx) coil while slightly improving th...
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Mohammed A. A. Desouky and Ossama Abdelkhalik
This paper is concerned with magnetic attitude control of spacecraft. The operation of the magnetic actuators is usually on a duty cycle; during the off times in this duty cycle the magnetometers are used to measure the magnetic field around the spacecra...
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Wenxi Wang, Zhilin Yang, Renkang Hu, Xugang Hua and Xiuyong Wang
Active control of a stay cable through changing its tension is an effective way to lower the vibration amplitude. In this paper, active tendon control of a stay cable using a giant magnetostrictive actuator (GMA), which can generate axial deformation in ...
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Yunkai Qi, Jianjun Gu, Guochao Shi, Xin Li, Ao Wang and Shumin Yang
Self-assembled dual-working electrode electrolytic cells were designed to produce twin alumina-Co composite films with highly symmetrical microstructures using a deflected electric field-assisted alternating current electrodeposition method. The results ...
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Nguyen Viet Phong, Byung Sun Min, Seo Young Yang and Jeong Ah Kim
We isolated eight known secondary metabolites, including two isocoumarins and six coumarins, from the stems and branches of Acer mono Maxim. Their structures were confirmed using nuclear magnetic resonance spectroscopy and by comparing the data to publis...
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Walter Fuscaldo, Dimitrios C. Zografopoulos, Francesca Imperato, Paolo Burghignoli, Romeo Beccherelli and Alessandro Galli
The tunable properties of nematic liquid crystals (NLC) are here exploited in a peculiar leaky waveguide with artificial magnetic conductors as the lateral walls, a bottom metal ground plane, and a homogenized metasurface on top to obtain dynamic beamste...
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Jong Suk Lim and Hyung-Woo Lee
This paper presents a method of utilizing a non-contact position sensor for the tilting and movement control of a rotor in a rotary magnetic levitation motor system. This system has been studied with the aim of having a relatively simple and highly clean...
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Sungwoo Chang, Noboru Niguchi, Je-Hoon Lee and Katsuhiro Hirata
In electric motors, the use of rare-earth magnets has been increasing rapidly. A stronger magnet force of the magnet enables the motor?s higher performance, resulting in the most high-performance motors generally using rare-earth magnets. However, these ...
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Zhen Qin, Yu-Ting Wu, Aihua Huang, Sung-Ki Lyu and John W. Sutherland
A novel design of a vibration energy absorbing mechanism (VEAM) that is based on multi-physics (magnetic spring, hydraulic system, structural dynamics, etc.) for cable vibration is proposed. The minimum working force of the hydraulic cylinder has been ex...
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Artur Rojek
Pág. 35 - 40
High-speed circuit breakers (HSCB) used in DC circuits are one of the basic elements of overload, short-circuit and electric shock protection. Such breakers are used in transport (trams, trolleybuses, subways and railways) in electric power supply facili...
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