Calibration of three-axis magnetometers with alternative iteration looping optimization method
ISSN: 0260-2288
Article publication date: 14 March 2018
Issue publication date: 3 July 2018
Abstract
Purpose
This study aims to find a novel solution to the calibration of three-axis magnetometers to suppress errors of sensors. The nature of the calibration process is parameter estimation and hence the purpose of the paper is to calculate the error parameters and eliminate sensor errors and obtain the true value of the pure magnetic field.
Design/methodology/approach
The paper puts forward a calibration method using an alternative iteration looping optimization (AILO) to estimate the parameters. The proposed method divided the parameters to be estimated into two parts: a portion less than one and the other greater than one. Parameters with different orders of magnitude are calculated respectively, which let one part to be a known quantity and the other part is derived by the known quantity; the derived quantity is used to calculate the known quantity again, and looping iteration multiple times until the iteration termination condition is satisfied.
Findings
The simulation and experimental results indicate that the calibration accuracy is improved at least by two orders by the proposed method compared to the two-step method and the linear decreasing weight particle swarm optimization (LDW-PSO) algorithm which proves the validity of the proposed method.
Practical implications
The proposed method can improve the calibration accuracy of total magnetic field, which provides a reference to the calibration of three-axis magnetometers.
Originality/value
A calibration method based on the AILO is proposed in this paper, which is used to improve the calibration accuracy of the three-axis magnetometer.
Keywords
Acknowledgements
This paper is supported by the “National Natural Science Foundation of China” (No.11602296) and the “China Postdoctoral Science Foundation” (No.2014T70974). Furthermore, the authors would like to thank all who have helped with this study.
Author Contributions: Ting Li wrote the paper. Jinsheng Zhang and Shicheng Wang revised the manuscript. Jiangjun Jiang shared the idea in the paper. Dongyu Li and Zhifeng Lv helped carry out the experiment together. All authors approved the final version of the manuscript.
Conflicts of Interest: The authors declare no conflict of interest.
Citation
Li, T., Zhang, J., Wang, S., Li, D., Lv, Z. and Jiang, J. (2018), "Calibration of three-axis magnetometers with alternative iteration looping optimization method", Sensor Review, Vol. 38 No. 4, pp. 509-516. https://doi.org/10.1108/SR-09-2017-0194
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited