A New Calibration Method of Three Axis Magnetometer With Nonlinearity Suppression

Author

Hongfeng Pang ; Dixiang Chen ; Mengchun Pan ; Shitu Luo ; Qi Zhang ; Ji Li ; Feilu Luo

Author_Institution

Coll. of Mechatron. Eng. & Autom., Nat. Univ. of Defense Technol., Changsha, China

Volume

49

Issue

9

fYear

2013

fDate

Sept. 2013

Firstpage

5011

Lastpage

5015

Abstract

Nonlinearity is a prominent limitation to the calibration performance of vector magnetometers. A new calibration model is proposed to suppress the nonlinearity of magnetometers and improve calibration performance, in which the nonlinearity coefficients of scale factors are considered. The experimental system mainly consists of a three-axis fluxgate magnetometer (MAG3300), a 2D nonmagnetic rotation equipment, and a proton magnetometer (CZM-3), in which the nonmagnetic rotation equipment is used to change the position of three-axis fluxgate magnetometer, and the scalar value of magnetic field is obtained with the proton magnetometer and considered to be the true value. The principle of this new calibration method is analyzed, and the calibration procedures are introduced. Experimental results show that after nonlinearity suppression, the root-mean-square error of calibration can be reduced by three times. It suggests an effective way to improve the calibration performance of three-axis magnetometers.

Keywords

calibration; fluxgate magnetometers; magnetic field measurement; mean square error methods; 2D nonmagnetic rotation equipment; CZM-3; MAG3300; calibration method; magnetic field scalar value; nonlinearity suppression coefficient; nonmagnetic rotation equipment; proton magnetometer; root-mean-square error; three axis vector magnetometer; three-axis fluxgate magnetometer; Nonlinearity; calibration model; scale factor; three-axis magnetometer;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2259842

Filename

6507566