Results 311 to 320 of about 92,312 (333)
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Optimized coils for electromagnetic induction systems
SPIE Proceedings, 2013Electromagnetic induction (EMI) systems often use separate transmit and receive coils. In these systems, it is desirable for the transmit and receive coils to have minimal mutual coupling and a maximum eld product, thus maximizing the detection depth. We demonstrate that a pair of spiral coils can be optimized to achieve these desired properties.
Mark A. Reed, Waymond R. Scott
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Electromagnetic analysis of coils for wireless power transfer
2017 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2017The accurate modelling of a system a coupled coils is of paramount importance in the design of wireless power system. In particular, the resistances of the coils and their mutual inductance coefficient determined the efficiency of the device. In this contribution the authors compare the parameters of a two coils system obtained by two numerical codes ...
BARMADA, SAMI +4 more
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Electromagnetic Force Control System of Solenoidal Coil [PDF]
2018 37th Chinese Control Conference (CCC), 2018 This paper focuses on studies of electromagnetic force control system of solenoid coil electromagnetic field. The mathematical relationship of electromagnetic force with power supply current of solenoid electromagnetic coil is derived. The control system of electromagnetic force is constructed, which includes an adjustable PWM power supply and a ...
Fang He, Qiang Wang, Hao Li, Yayun Zheng
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Fabrication of Excitation Coils for Electromagnetic Microactuators
2011A key component for electromagnetic micro devices is the coil. Exposing it to an electric current results in exciting a magnetic field. The three coils most commonly used in microactuators are the meander, the planar spiral, and the helical type. For fabricating these coils in thin-film technology a combination of photolithography (for creating a ...
O. Traisigkhachol +8 more
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Optimisation of the Magnetic Screening of Electromagnetic Coils
1983A frequent problem with systems incorporating coil windings or permanent magnets is the need to reduce the stray magnetic field. This may be necessary to ensure the operation of nearby instruments sensitive to magnetic field. The usual solution is to shield the system using a shell of ferromagnetic material.
A Zisserman, J Caldwell, D H Prothero
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Electromagnetic and electric field configurations produced by two coils
Acta Orthopaedica Scandinavica, 1980Journal Article ; SCOPUS: ar.j ; info:eu-repo/semantics ...
Dierickx, Maurice +3 more
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The effect of coil polarity on electromagnetic forming using a multi-coil system
The International Journal of Advanced Manufacturing Technology, 2019Electromagnetic forming, by combining multiple coils and multiple capacitor banks, is an emerging manufacturing method that can produce flexible spatial-temporal patterns of the Lorentz force to shape metal workpiece. In this process, the polarity of the discharge currents is a key element because it determines the polarity of the magnetic field that ...
Zhipeng Lai +7 more
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Quench Detection Method for HTS Coils Using Electromagnetically Coupled Coils
IEEE Transactions on Applied Superconductivity, 2015Generally, in order to detect the quench of the superconducting field coil for the superconducting rotating machine, signal wires for voltage taps are indispensably needed. However, the problem of the conventional method is wire twisting as the superconducting field coil rotates.
Jeyull Lee +6 more
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Parameter settings of the projectile of the coil electromagnetic launcher
2012 16th International Symposium on Electromagnetic Launch Technology, 2012The launching processes of the coil electromagnetic launcher (EML) were simulated by Ansoft Maxwell. The influences of the material and shape of projectile, and other factors (e.g. the relative position of the projectile and drive coil) on the launching performance were analyzed.
Zhenxiang Liu +3 more
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Optimal Coil Currents in Electromagnetic Flow Tomography
IEEE Sensors Journal, 2017Electromagnetic flow meters are a gold standard in measuring the mean flow velocity of conductive liquids and slurries in process industry. A drawback of this approach is that the velocity field cannot be determined. Velocity field information is important for characterizing multiphase flows in the process industry.
Ossi Lehtikangas, Marko Vauhkonen
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