Twelve-Position Calibrating Method without North Using for Three-Axis Magnetic Sensor

Abstract:

In allusion to the compensation of environmental magnetic field for using three-axis magnetic sensor, a twelve-position calibrating method without north is designed. The equations of three-axis bias, scale factor error and install alignment error are deduced in the proposed method which is totally based on the magnetic field of up direction. According to the effect of hard iron and soft iron is equaled to the variation of three-axis bias, scale factor error and install alignment error, comparison experiments are completed in natural conditions and in conditions that the effect of hard iron and soft iron is artificially imposed. The experiment shows that this method can solve the compensation of hard iron and soft iron interference effectively for the application of up direction tumbling test.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 5082-5087
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.5082
• Online since: November 2011
• Authors: Ding Li, Song Lin Wo, Xiong Zhu Bu
• Keywords: Effect of Hard and Soft Iron, Install Alignment, Scale Factor, Three-Axis Bias, Three-Axis Magnetic Sensor

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