MagRing-SASB: Static Authentication of Magnetism Sensor Using Semi-Biometric Interaction Magnetic Ring

2021 ◽  
Author(s):  
A. S. Jouda ◽  
Ali Makki Sagheer ◽  
Moceheb Lazam Shuwandy
Keyword(s):  
Magnetic Ring

scholarly journals Effect of Mechanical Load on Defects Level in Soft Ferrite Ceramics

2018 ◽  
Vol 186 ◽  
pp. 02010
Author(s):  
A.B. Petrova ◽  
A.V. Malyshev ◽  
A.P. Surzhikov
Keyword(s):  
Temperature Dependence ◽  
Curie Point ◽  
Room Temperature ◽  
Mechanical Load ◽  
Initial Permeability ◽  
Temperature Dependences ◽  
Four Levels ◽  
Magnetic Ring ◽  
Soft Ferrite ◽  
With Screws

The article presents the results of a study of the effect of mechanical load on the temperature dependence of the initial permeability of LiTiZn soft ferrite ceramics. Regimes of mechanical load were created by a steel non-magnetic ring with screws. In this work, four levels of mechanical load were investigated: without load, with 1, 2 and 3 screws. For obtaining temperature dependences and exclude the influence of prehistory on the initial permeability, the samples were heated to a temperature exceeding the Curie point by 50 degrees, after which they slowly cooled to room temperature. The defects level was determined by the ratio of the parameters β / α of the phenomenological expression, which describes the experimental temperature dependences. It is shown that as the mechanical load increases, the defects level of ferrite ceramics increases, and after load removing, it returns to its original level.

scholarly journals Studies of Systematic Limitations in the EDM Searches at Storage Rings

2016 ◽  
Vol 40 ◽  
pp. 1660093 ◽  
Author(s):  
Artem Saleev ◽  
Nikolai Nikolaev ◽  
Frank Rathmann
Keyword(s):  
Dipole Moment ◽  
Magnetic Dipole ◽  
Electric Dipole Moment ◽  
Electric Dipole ◽  
Magnetic Dipole Moment ◽  
Original Method ◽  
Spin Rotation ◽  
Systematic Effect ◽  
Systematic Effects ◽  
Magnetic Ring

Searches of the electric dipole moment (EDM) at a pure magnetic ring, like COSY, encounter strong background coming from magnetic dipole moment (MDM). The most troubling issue is the MDM spin rotation in the so-called imperfection, radial and longitudinal, B-fields. To study the systematic effects of the imperfection fields at COSY we proposed the original method which makes use of the two static solenoids acting as artificial imperfections. Perturbation of the spin tune caused by the spin kicks in the solenoids probes the systematic effect of cumulative spin rotation in the imperfection fields all over the ring. The spin tune is one of the most precise quantities measured presently at COSY at [Formula: see text] level. The method has been successfully tested in September 2014 run at COSY, unravelling strength of spin kicks in the ring’s imperfection fields at the level of [Formula: see text].

Method of Far-field Electromagnetic Radiation Prediction and Suppression Based on Equivalence of Capacitance Parameters in Power Converter System

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Li Zhengzhi ◽  
B Zhang Kaiyan ◽  
Wang Shishan ◽  
A Guo Jian
Keyword(s):  
Electromagnetic Radiation ◽  
Research Area ◽  
Power Converter ◽  
Path Model ◽  
Scattering Parameter ◽  
Radiation Emission ◽  
Current Path ◽  
Key Issues ◽  
Magnetic Ring ◽  
Good Agreement

Electromagnetic radiation is one of the key issues in research area of EMC. This paper analyzes that common-mode (CM) current is the main noise source, and transmits through parasitic capacitances between input cables and ground, thus CM current path model (CCP) is established. Moreover, CCP is formed as equivalent prediction model of radiation (EMR) by appropriate simplification. The parasitic capacitances of EMR are extracted, and EMR is iterative designed. Furthermore, the radiation emission of two models is in good agreement. At last, ferrite magnetic ring is selected to change scattering parameter matrix, thus electromagnetic radiation can be suppressed; the recommended installation of magnetic ring is given. Keywords: Radiation; Parasitic Parameter;

scholarly journals Dissipation characteristics of quantized spin waves in nano-scaled magnetic ring structures

2008 ◽  
Vol 41 (16) ◽  
pp. 164017 ◽  
Author(s):  
H Schultheiss ◽  
C W Sandweg ◽  
B Obry ◽  
S Hermsdörfer ◽  
S Schäfer ◽  
...  
Keyword(s):  
Spin Waves ◽  
Ring Structures ◽  
Magnetic Ring
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