A Simplified High-Precision Calibration Method for 3D Electronic Compass
QIU Xiufen
SHI Wenfeng
SUN Chunyan
SHEN Heping
Abstract：As multiple error factors of three-dimensional electronic compass coupled to each other, common methods are hard to calibrate and compensate the errors, which has a great influence on calculation of attitude.To solve this problem, this paper designed a simple calibration method.Firstly, the sensor dip-angle is found out by rotation, then the bias error and sensitivity error is calculated by ellipsoid-fitting.This method considers the internal relations among the installation error, nonorthogonal error, alignment error, soft magnetic effect, hard magnetic effect, treat the electronic compass as a whole.The experimental results show that using this simple calibration method, the error of attitude sensor can achieve ±0.5 degrees within the range of pitching angle of ±85 degrees.
Keywords：three-dimensional electronic compassmagnetic sensorerror calibrationposture calculating
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 82-85,125 )