Title :
Research on error compensation algorithm of magneto-resistive electronic compass
Author :
Tingting, Shao ; Yanhu, Fan ; Yongbo, Zhang ; Shuili, Zhang ; Jiancang, Ma
Author_Institution :
Coll. of Electron. & Inf., Yan´´an Univ., Yan´´an, China
Abstract :
The structure and work principle of a 3-axes magneto-resistive electronic compass was introduced, which was based on magneto resistive sensor and MEMS accelerometer. The possible error and its source were analyzed. Effective algorithm was used to pre-treat A/D sampling data; Combine classic ellipse hypothesis method and least square method based on 24-points, a new error-compensation method was advanced. The experiment result shows that the new method is simple and effective, and the heading error can achieve ±0.6° steadily without adding the complexity of hardware or software.
Keywords :
accelerometers; compasses; least squares approximations; magnetoresistive devices; microsensors; A/D sampling data; MEMS accelerometer; classic ellipse hypothesis method; error compensation algorithm; least square method; magnetoresistive electronic compass; magnetoresistive sensor; Compass; Error compensation; Least squares methods; Magnetic fields; Micromechanical devices; Sensitivity; Software; algorithm; electronic compass; error analysis; error compensation;
Conference_Titel :
Electronic Measurement & Instruments (ICEMI), 2011 10th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8158-3
DOI :
10.1109/ICEMI.2011.6037999
