Title :
Orthogonal fluxgate magnetometer utilizing bias switching for stable operation
Author :
Sasada, Lchiro ; Usui, Takashi
Author_Institution :
Dept. of Appl. Sci. for Electron. & Mater., Kyushu Univ., Kasuga, Japan
Abstract :
A new mode of operation is described for an orthogonal fluxgate built with a thin magnetic wire. In this mode, a dc bias is added to the ac excitation and the fundamental component of the induced voltage is a measure of the axially applied magnetic field. A bias switching method for reducing offset and drift is proposed for the orthogonal fluxgate operating in the new mode. Preliminary results on the resolution and the stability are presented.
Keywords :
fluxgate magnetometers; magnetic field measurement; stability; switching; bias switching method; dc bias; fluxgate magnetometer; induced voltage; magnetic field; magnetic noise; orthogonal fluxgate; stability; thin magnetic wire; Amorphous magnetic materials; Amorphous materials; Magnetic anisotropy; Magnetic field measurement; Magnetic fields; Magnetic materials; Magnetic switching; Magnetization; Magnetometers; Wire;
Conference_Titel :
Sensors, 2003. Proceedings of IEEE
Print_ISBN :
0-7803-8133-5
DOI :
10.1109/ICSENS.2003.1278982
