Magnetic flux density
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Energy conversion and conditioning technologies, power electronics, adjustable speed drives and their applications, power electronics for smarter grid, energy efficiency,technologies for sustainable energy systems, converters and power supplies
The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted papers will be peer reviewed. Accepted high quality papers will be presented in oral and postersessions, will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE
The CDC is the premier conference dedicated to the advancement of the theory and practice of systems and control. The CDC annually brings together an international community of researchers and practitioners in the field of automatic control to discuss new research results, perspectives on future developments, and innovative applications relevant to decision making, automatic control, and related areas.
Technical presentations will range from the fundamental physics of electron emission and modulated electron beams to the design and operation of devices at UHF to THz frequencies, theory and computational tool development, active and passive components, systems, and supporting technologies.System developers will find that IVEC provides a unique snapshot of the current state-of-the-art in vacuum electron devices. These devices continue to provide unmatched power and performance for advanced electromagnetic systems, particularly in the challenging frequency regimes of millimeter-wave and THz electronics.Plenary talks will provide insights into the history, the broad spectrum of fundamental physics, the scientific issues, and the technological applications driving the current directions in vacuum electronics research.
The Conference focuses on all aspects of instrumentation and measurement science andtechnology research development and applications. The list of program topics includes but isnot limited to: Measurement Science & Education, Measurement Systems, Measurement DataAcquisition, Measurements of Physical Quantities, and Measurement Applications.
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission
The Transactions on Biomedical Circuits and Systems addresses areas at the crossroads of Circuits and Systems and Life Sciences. The main emphasis is on microelectronic issues in a wide range of applications found in life sciences, physical sciences and engineering. The primary goal of the journal is to bridge the unique scientific and technical activities of the Circuits and Systems ...
Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.
Educational methods, technology, and programs; history of technology; impact of evolving research on education.
2002 IEEE International Magnetics Conference (INTERMAG), 2002
Summary form only given. The linear motor has attracted attention in the field of transportation, etc., because it generates linear thrust directly without contact. In general, linear motors generate only 1-dimensional thrust. The authors propose an X-Y linear motor which is composed of an iron core and two separate windings in the horizontal X and Y directions. Exciting one winding ...
2005 IEEE International Magnetics Conference (INTERMAG), 2005
The visualization of precise 2-D or 3-D magnetic flux distribution has been achieved for studying the precise design of magnetic machinery and device. Projection method is one of the useful techniques for measurement and visualization magnetic flux density. To determine the minimum number of probe, spatial frequency component has been discussed. In this probe design, it is important to choose ...
2007 International Conference on Electrical Machines and Systems (ICEMS), 2007
Sensitive detection of the defect signals in NDT system is critical. Because of a strong magnetic field in magnetic flux type NDT system, the object itself is magnetized and shows a hysteresis characteristics during the sensing, which might cause a distortion of the defect signals. In this research, the magnetization characteristics of a pipeline in the magnetic flux leakage type ...
IEEE Transactions on Magnetics, 1990
Rotational dynamic magnetostriction was measured as a function of rotating magnetic flux density on nonoriented and grain-oriented silicon steel sheets under various magnetization conditions. Rotational dynamic magnetostriction was measured by using a special strain gage which provides x- and y-direction output. Rotational magnetostriction is shown to be considerably larger than conventional alternating magnetostriction along the rolling direction because rotational dynamic ...
Digest of the Fifth Biennial IEEE Conference on Electromagnetic Field Computation, 1992
Materials Challenges for Next-Generation, High-Density Magnetic Recording - Kazuhiro Hono: IEEE Magnetics Distinguished Lecture 2016
Superconductive Energy-Efficient Computing - ASC-2014 Plenary-series - 6 of 13 - Wednesday 2014/8/13
HARI SRIKANTH - IEEE Magnetics Distinguished Lecture
ASC-2014 SQUIDs 50th Anniversary: 2 of 6 - John Clarke - The Ubiquitous SQUID
Interaction of ferromagnetic and superconducting permanent magnets - superconducting levitation
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 7 of 7 - SQUID-based noise thermometers for sub-Kelvin thermometry
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 3 of 7 - MEG and ULF-MRI
Development of Quantum Annealing Technology at D-Wave Systems - 2018 IEEE Industry Summit on the Future of Computing
The Josephson Effect: The Original SQUIDs
The Josephson Effect: Brian Josephson Debates John Bardeen
Energy Efficient Single Flux Quantum Based Neuromorphic Computing - IEEE Rebooting Computing 2017
AlGaN/GaN Plasmonic Terahertz Detectors
IEEE Magnetics Distinguished Lecture - Mitsuteru Inoue
Advances in MgB2 - ASC-2014 Plenary series - 7 of 13 - Wednesday 2014/8/13
Perpendicular magnetic anisotropy: From ultralow power spintronics to cancer therapy
A Discussion on Hard Drives
International Future Energy Challenge (IFEC) 2017
Magnetic Nanowires: Revolutionizing Hard Drives, RAM, and Cancer Treatment
HYUNSOO YANG - IEEE Magnetics Distinguished Lecture
Summary form only given. The linear motor has attracted attention in the field of transportation, etc., because it generates linear thrust directly without contact. In general, linear motors generate only 1-dimensional thrust. The authors propose an X-Y linear motor which is composed of an iron core and two separate windings in the horizontal X and Y directions. Exciting one winding gives 1-directional thrust, and exciting another winding gives orthogonal thrust. Total thrust is obtained as a composition of the 2 thrust vectors controlled by each current. This is useful for switching actuators in transportation applications, etc. The authors proposed this application and report its characteristics.
The visualization of precise 2-D or 3-D magnetic flux distribution has been achieved for studying the precise design of magnetic machinery and device. Projection method is one of the useful techniques for measurement and visualization magnetic flux density. To determine the minimum number of probe, spatial frequency component has been discussed. In this probe design, it is important to choose the number of probe coil because this parameter will affect the reconstruction accuracy. In order to discuss this probe design, a magnetic flux leakage from the magnetic machinery and device is assumed, and the probe size is used in 100 mm square. Then a calculation model is employed to simulate the reconstruction process of magnetic flux distribution for the purpose of designing the optimum structure of probe.
Sensitive detection of the defect signals in NDT system is critical. Because of a strong magnetic field in magnetic flux type NDT system, the object itself is magnetized and shows a hysteresis characteristics during the sensing, which might cause a distortion of the defect signals. In this research, the magnetization characteristics of a pipeline in the magnetic flux leakage type non-destructive testing are analyzed. Effects of a magnetic hysteresis of a pipeline are analyzed by Preisach modeling and a magnetic flux density due to a remanent magnetization of gas pipeline is computed and verified by real measurement.
Rotational dynamic magnetostriction was measured as a function of rotating magnetic flux density on nonoriented and grain-oriented silicon steel sheets under various magnetization conditions. Rotational dynamic magnetostriction was measured by using a special strain gage which provides x- and y-direction output. Rotational magnetostriction is shown to be considerably larger than conventional alternating magnetostriction along the rolling direction because rotational dynamic magnetostriction is generated by the appearance and disappearance of 90 degrees magnetic domain walls under the rotating flux density. The results obtained explain why the cores of rotating machines and three-phase transformers show larger magnetostriction than that predicted by rolling direction measurements of single-strip sheets under alternating flux.<<ETX>>
A new method for analysis and design of line reactances utilising two- dimensional planar models is presented in this paper. Inductance and magnetic flux density are calculated, and their results compared with those measured experimentally. The results obtained are good if compared with those measured once the machine has been built. Moreover, the method herein developed is applied to the calculation of air gap lengths in terms of the desired current and inductance. The kind of reactances studied presents air gaps at the ends of the three limbs (joint of limbs and yokes). The main contribution of this paper is the presentation of a method of industrial application, to be easily developed, with a very important reduction in the time of machine calculation (due to the decrease in the number of nodes and elements compared with the three-dimensional model) for the determination of the air gap length in line reactances.
In this paper, a simulation algorithm for driving performance considering nonlinear parameters of interior permanent magnet synchronous motor (IPMSM) for electric vehicle such as d-axis, q-axis inductances, and core loss is proposed. D-axis and q-axis inductances are changed according to both current magnitude and the angle between q-axis and current axis because of nonlinearity of magnetic flux density in a rotor core. Moreover, core loss characteristic for the calculation of efficiency map is also changed according to these parameters. Therefore, we calculate d-axis and q-axis inductance 3D tables, and core loss 3D table considering nonlinearity of magnetic flux density by using FEM.
A visualization method of magnetic flux density distribution using CT (computed tomography) technique is presented. In this method, the sensor (CT probe) is composed of only the coil pattern plane, and can visualize two- dimensional distribution of magnetic flux density of vertical component in the plane. If the sensor is composed as a multilayered CT probe, it is also possible to image the magnetic flux density distribution without physical scanning motion. To perform high sensitivity measurement, we propose a new shape of coil pattern with switch mechanism. We perform visualization of one frequency component of magnetic flux density distribution from a mixed frequency magnetic field.
This paper presents theoretical and experimental results on the focusing of Brillouin electron beams by use of long-period magnetic fields. This type of focusing was evolved to overcome limitations on continuous and average powers, efficiency, and operating frequency in state-of-the-art microwave tubes employing short-period sinusoidal focusing fields. The theoretical analysis presents the derivation of the optimum field shape for focusing through a single field reversal, and shows that optimum focusing is achieved when the magnetic flux density is peaked immediately before and after the change of polarity. New theoretical results are presented on the use of long-period focusing fields consisting of optimally peaked reversals separated by constant-field regions. The most important of these results is the high degree of stability possessed by such fields and virtual elimination of stop-bands usually produced by periodic systems. The theory presented is in good agreement with numerical solutions obtained by use of a digital computer. Experimental results obtained on long-period magnet assemblies employing three and seven reversals show beam-transmission efficiencies of 98 percent at perveances comparable to those focused by the optimum state-of-the-art short- period magnets.
This paper proposes the rotary magnetic position sensor (RMPS) which has the sinusoidally magnetized permanent magnet (PM) with a small number of poles. To make the sinusoidal magnetic flux density distribution from the PM, the magnetizing fixture is designed. And the magnetization process is analyzed using Preisach model coupled with 2D finite element method (FEM). Also the simulation result of the magnetization is compared with the experiment result
This project describes measurement goals associated with characterizing quasi-static magnetic and electric fields, e.g. power frequency and other extremely low frequency fields, and available methods for accomplishing them. The guide should be used in conjunction with IEEE Std 1308-1994 (IEEE Recommended Practice for Instrumentation: Specifications for Magnetic Flux Density Meters - 10 Hz to 3 kHz), which defines terminology and ...
This project provides recommended practices for the prediction and practical determination of safe distances from radio and radar transmitting antennas when using electric initiators to remotely detonate an explosive charge. Specifically, this document includes mathematical formulas, tables, and charts that allow the user to determine safe distances from RF transmitters with spectrum bands from 0.5 MHz to 300 GHz, including ...
To specify protocols for the measurement of the peak spatial-average specific absorption rate (SAR) in a simplified model of the head of users of hand-held radio transceivers used for personal wireless communications services and intended to be operated while held next to the ear. It applies to contemporary and future devices with the same or similar operational characteristics as contemporary ...
Revise and develop specifications for preferred methods for measuring and computing external radiofrequency electromagnetic fields to which persons may be exposed. In addition, the document will specify preferred methods for the measurement and computation of the resulting fields and currents that are induced in bodies of humans exposed to these fields over the frequency range of 100 kHz to 300 ...
Develop safety levels for human exposure to electromagnetic fields from 0 to 3kHz. This standard will be based on the results of an evaluation of the relevant scientific literature and proven effects which are well established and for which thresholds of reaction are understood. Field limits will be derived from threshold current densities or internal electric fields.