Transverse Field Effect in Fluxgate Sensors

Peter Brauer; José M.G. Merayo; Otto V Nielsen; Fritz Primdahl; Jan Raagaard Petersen

doi:10.1016/S0924-4247(97)01416-7

Transverse Field Effect in Fluxgate Sensors

Peter Brauer, José M.G. Merayo, Otto V Nielsen, Fritz Primdahl, Jan Raagaard Petersen

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

A model of a fluxgate magnetometer based on the field interactions in the fluxgate core has been derived. The non-linearity of the ringcore sensors due to large uncompensated fields transverse to the measuring axis are calculated and compared with measurements. Measurements of the non-linearity are made with a spectrum analyzer measuring the higher harmonics of an applied sinusoidal field. For a sensor with a permalloy ringcore of 1 in. in diameter the deviation from linearity is measured to about 15 nT_p-p in the earth's field and the measurements are shown to fit well the calculations. Further, the measurements and the calculations are also compared with a calibration model of the fluxgate sensor onboard the 'MAGSAT' satellite. The later has a deviation from linearity of about 50 nT_p-p but shows basically the same form of non-linearity as the measurements.

Original language	English
Journal	Sensors and Actuators A: Physical
Volume	59
Issue number	1-3
Pages (from-to)	70-74
ISSN	0924-4247
DOIs	https://doi.org/10.1016/S0924-4247(97)01416-7
Publication status	Published - 1997

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title = "Transverse Field Effect in Fluxgate Sensors",

abstract = "A model of a fluxgate magnetometer based on the field interactions in the fluxgate core has been derived. The non-linearity of the ringcore sensors due to large uncompensated fields transverse to the measuring axis are calculated and compared with measurements. Measurements of the non-linearity are made with a spectrum analyzer measuring the higher harmonics of an applied sinusoidal field. For a sensor with a permalloy ringcore of 1 in. in diameter the deviation from linearity is measured to about 15 nTp-p in the earth's field and the measurements are shown to fit well the calculations. Further, the measurements and the calculations are also compared with a calibration model of the fluxgate sensor onboard the 'MAGSAT' satellite. The later has a deviation from linearity of about 50 nTp-p but shows basically the same form of non-linearity as the measurements. ",

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T1 - Transverse Field Effect in Fluxgate Sensors

AU - Brauer, Peter

AU - Merayo, José M.G.

AU - Nielsen, Otto V

AU - Primdahl, Fritz

AU - Petersen, Jan Raagaard

PY - 1997

Y1 - 1997

N2 - A model of a fluxgate magnetometer based on the field interactions in the fluxgate core has been derived. The non-linearity of the ringcore sensors due to large uncompensated fields transverse to the measuring axis are calculated and compared with measurements. Measurements of the non-linearity are made with a spectrum analyzer measuring the higher harmonics of an applied sinusoidal field. For a sensor with a permalloy ringcore of 1 in. in diameter the deviation from linearity is measured to about 15 nTp-p in the earth's field and the measurements are shown to fit well the calculations. Further, the measurements and the calculations are also compared with a calibration model of the fluxgate sensor onboard the 'MAGSAT' satellite. The later has a deviation from linearity of about 50 nTp-p but shows basically the same form of non-linearity as the measurements.

AB - A model of a fluxgate magnetometer based on the field interactions in the fluxgate core has been derived. The non-linearity of the ringcore sensors due to large uncompensated fields transverse to the measuring axis are calculated and compared with measurements. Measurements of the non-linearity are made with a spectrum analyzer measuring the higher harmonics of an applied sinusoidal field. For a sensor with a permalloy ringcore of 1 in. in diameter the deviation from linearity is measured to about 15 nTp-p in the earth's field and the measurements are shown to fit well the calculations. Further, the measurements and the calculations are also compared with a calibration model of the fluxgate sensor onboard the 'MAGSAT' satellite. The later has a deviation from linearity of about 50 nTp-p but shows basically the same form of non-linearity as the measurements.

U2 - 10.1016/S0924-4247(97)01416-7

DO - 10.1016/S0924-4247(97)01416-7

M3 - Journal article

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VL - 59

SP - 70

EP - 74

JO - Sensors and Actuators A: Physical

JF - Sensors and Actuators A: Physical

IS - 1-3

ER -

Transverse Field Effect in Fluxgate Sensors

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