Title :
Compensation Method of Cross-Axis Effect for AMR Sensor
Author :
Ouyang, Jun ; Chen, Shi ; Yu, Lei ; Zuo, Chao ; Chen, Xinguo ; Wu, Shaobing ; Yang, Xiaofei
Author_Institution :
Dept. of Electron. Sci. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
Cross-axis effect, which is inherent to anisotropic magnetoresistive sensor (referred to as AMR sensor), would have an impact on accurate measurement of magnetic field. For non-orthogonal system, model and compensation algorithm of cross-axis effect for AMR three-axis sensor were established. Taking measurement of proton precession magnetometer as a standard, AMR magnetometer and non-magnetic rotary table were used for outdoor experiments. According to test data, Newton-Raphson iteration method was utilized to calculate compensation parameters. The results showed that compensation method further reduced error of total magnetic field.
Keywords :
Newton-Raphson method; compensation; magnetometers; magnetoresistive devices; AMR sensor; Newton-Raphson iteration method; anisotropic magnetoresistive sensor; compensation method; cross-axis effect; proton precession magnetometer; Coils; Magnetic field measurement; Magnetic fields; Magnetic noise; Magnetic shielding; Magnetometers; Protons; Newton-Raphson iteration method; anisotropic magnetoresistive sensor; cross-axis effect; non-orthogonality;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6880-5
DOI :
10.1109/iCECE.2010.154
