Results 271 to 280 of about 17,120 (311)
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Electromagnetic Optimization of Superconducting Dipole Coils
International Journal of Applied Electromagnetics and Mechanics, 1996Optimization techniques are applied in order to find geometrical solutions for coils used in superconducting accelerator dipole magnets. Relevant coil geometry parameterization and field computation methods are presented. Performances of some deterministic, stochastic and multistage optimization algorithms are discussed and preliminary results are ...
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Design formulas for electromagnetic sensing coils
Geoexploration, 1967Abstract It is demonstrated that for a certain class of electromagnetic sensing coils the geometry and weight of the device are essentially determined by the signal-to-noise ratio desired. The number of turns and the wire gauge are principally related to the required source impedance.
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Electromagnetic Coil Gun – Construction and Basic Simulation
2014A single-stage, sensorless, coil gun was designed to demonstrate the capability to accelerate a ferromagnetic projectile to high velocity. This paper summarizes all important steps during coil gun design, such as physical laws of the coil gun, preliminary calculations, the testing device and the final product.
B. Skala, V. Kindl
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Electromagnetic noise measurements using microstrip coil array
IEEE Transactions on Magnetics, 1996We developed a microstrip coil array with diode switch circuits using multilayer printed wiring board. Electromagnetic noise maps were obtained by the coil array. Its advantages are its broadband sensitivity and reduced noise measurement time compared with conventional closed field probes.
M. Yamaguchi +4 more
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Analysis of capacitively driven electromagnetic coil guns
The XIX International Conference on Electrical Machines - ICEM 2010, 2010In this paper, the performance analysis of two stages linear induction launcher (LIL) is presented. It is carried out based on current filament model (CFM) taking their transient behavior into account. A computer simulation based on the developed model, is down for predicting the electromechanical characteristics of the launcher (Current, velocity ...
Y. Bencheikh, Y. Ouazir, R. Ibtiouen
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Transient simulation of helical coil electromagnetic launchers
COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2018Purpose Helical coil electromagnetic launchers (HEMLs) using motion-induced commutation strategy solve the problem of synchronization control perfectly. HEMLs can meet the requirements of multiple applications such as the electromagnetic catapult, electromagnetic mortar and high-velocity coilgun. The trade-off between the velocity and efficiency is an
Dong Yang +5 more
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Deformable, Electromagnetic, Coil Actuation for Sensor Systems
IEEE Sensors, 2005., 2006A compact means of achieving large displacement or rotational actuation, useful for a variety of sensor systems, is developed, modeled, and demonstrated. The basic device is a deformable, electromagnetically actuated coil that is fabricated in a commercial surface micromachining foundry.
B. McCarthy, V.M. Bright, M.L. Dunn
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Electromagnetic force calculations for a conical coil
Metallurgical Transactions B, 1993Levitation melting devices used in the laboratory typically employ small conical coils with a reverse wound turn at the top. The magnetic field and the Lorentz forces on an electrically conducting sample, due to an alternating current flowing in a small conical coil, are studied by modeling it as a conical helix.
Udaya B. Sathuvalli, Yildiz Bayazitoglu
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Electrodynamic loudspeaker with electromagnetic impedance sensor coil
The Journal of the Acoustical Society of America, 1993An electro-acoustic system including an amplifier circuitry for amplifying an input signal to provide an amplified signal; and electrodynamic loudspeaker having at least one magnet, a diaphragm connected to a coil support, a voice coil for driving a diaphragm in response to the amplified signal with the presence of the magnet, and an electromagnetic ...
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