scholarly journals GMI Effect Sensing on Magnetic Microwires

2019 ◽  
pp. 31-38
Author(s):  
Josef Blažek ◽  
Pavol Lipovský ◽  
Miroslav Šmelko ◽  
Katarína Draganová ◽  
Ladislav Tomčo ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Measurement ◽  
Impedance Measurement ◽  
Wide Band ◽  
Measurement Range ◽  
Magnetic Field Measurement ◽  
Gmi Effect ◽  
Lock In ◽  
Non Destructive ◽  
The Magnetic Field

One of the perspective methods for the magnetic field measurement is the methodology based on the GMI effect measurement. The improvement of the sensor is in term of the sensor sensitivity and the wide-band measurement range in comparison to the commercially available magnetometers. For the evaluation of the impedance of the sample the lock-in amplifier capable to make a decomposition of the impedance to the real and imaginary part was used. The designed and constructed measurement workstation can be used for the precise impedance measurement. Specification of the related metrological properties of the samples improve the precision of the magnetic field measurement that is important for vehicles navigation or for precise mapping of the magnetic fields if unmanned aerial vehicles are used in non-destructive archaeology.

scholarly journals Attitude Estimation of Underwater Vehicles Using Field Measurements and Bias Compensation

Sensors ◽  
2019 ◽  
Vol 19 (2) ◽  
pp. 330 ◽  
Author(s):  
Nak Ko ◽  
Seokki Jeong ◽  
Suk-seung Hwang ◽  
Jae-Young Pyun
Keyword(s):  
Magnetic Field ◽  
Field Measurement ◽  
Field Measurements ◽  
Underwater Vehicle ◽  
Field Vector ◽  
Attitude Estimation ◽  
Magnetic Field Measurement ◽  
Euler Angles ◽  
Measured Field ◽  
The Magnetic Field

This paper proposes a method of estimating the attitude of an underwater vehicle. The proposed method uses two field measurements, namely, a gravitational field and a magnetic field represented in terms of vectors in three-dimensional space. In many existing methods that convert the measured field vectors into Euler angles, the yaw accuracy is affected by the uncertainty of the gravitational measurement and by the uncertainty of the magnetic field measurement. Additionally, previous methods have used the magnetic field measurement under the assumption that the magnetic field has only a horizontal component. The proposed method utilizes all field measurement components as they are, without converting them into Euler angles. The bias in the measured magnetic field vector is estimated and compensated to take full advantage of all measured field vector components. Because the proposed method deals with the measured field independently, uncertainties in the measured vectors affect the attitude estimation separately without adding up. The proposed method was tested by conducting navigation experiments with an unmanned underwater vehicle inside test tanks. The results were compared with those obtained by other methods, wherein the Euler angles converted from the measured field vectors were used as measurements.

A rotating coil probe for the magnetic field measurement on a long pulsed tokamak

1999 ◽  
Vol 70 (1) ◽  
pp. 445-448 ◽  
Author(s):  
J. Fujita ◽  
K. Matsuura ◽  
K. Kawahata ◽  
S. Fujiwaka ◽  
S. Itoh ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Measurement ◽  
Magnetic Field Measurement ◽  
The Magnetic Field

Diagnostic method for the magnetic field measurement in the plasma focus device

1989 ◽  
Vol 31 (4) ◽  
pp. 587-594 ◽  
Author(s):  
S Czekaj ◽  
A Kasperczuk ◽  
R Miklaszewski ◽  
M Paduch ◽  
T Pisarczyk ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Plasma Focus ◽  
Field Measurement ◽  
Diagnostic Method ◽  
Plasma Focus Device ◽  
Magnetic Field Measurement ◽  
The Magnetic Field

The Magnetic Field Sensor on the Base of Ybacuo Ceramics with Sharp Jump of Magnetic Reply

1996 ◽  
Vol 430 ◽  
Author(s):  
Kh. R. Rostami ◽  
A. A. Sukhanov ◽  
V. V. Mantorov
Keyword(s):  
Magnetic Field ◽  
Field Measurement ◽  
Critical Magnetic Field ◽  
Measurement Methods ◽  
Magnetic Field Sensor ◽  
Magnetic Field Measurement ◽  
Field Sensor ◽  
The Magnetic Field

AbstractThe magnetic field sensor with sensitivity 10−3 Oe and work temperature 77°K is created on the base of YBaCuO ceramics having a sharp jump of the diamagnetic moment in the region of the first Josephson critical magnetic field. The magnetic field measurement methods and the sensor principle are described. Ways to improve the obtained results are indicated.

Influence of Shielding on the Magnetic Field Measurement by Direct H-Coil Method in a Double-Yoked SST

2018 ◽  
Vol 54 (3) ◽  
pp. 1-4
Author(s):  
Benjamin J. Mailhe ◽  
Ricardo de Araujo Elias ◽  
Indiara Pitta Correa da Silva ◽  
Nelson Sadowski ◽  
Nelson J. Batistela ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Measurement ◽  
Magnetic Field Measurement ◽  
Coil Method ◽  
The Magnetic Field
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