Two-point magnetic field positioning algorithm based on rotating magnetic dipole

• DOI: 10.1016/j.measurement.2021.109059
• Publication Date: 2021-01-22T11:12:50Z
• Authors: Pengfei Lin; Ning Zhang; Chunsheng Lin; Ming Chang; Lei Xu
• Keywords: 0103 physical sciences; 01 natural sciences

Abstract The detection and localization of magnetic targets based on magnetic field signals have become a research hotspot in recent years. In this study, a magnetic field model is established for the rotating propeller, which is regarded as a magnetic dipole. Moreover, a positioning algorithm of two-point shaft-rate magnetic field is proposed according to the rotating magnetic dipole. In addition, the positioning accuracy of the algorithm and the influence of some factors such as uneven magnetic distribution of magnetic dipole and measurement noise on the accuracy are analyzed. The simulation results indicate that the positioning accuracy increases with the increase in the circular trajectory radius of magnetic moment when there is an uneven magnetic distribution. The error caused by measurement noise increases with the increase in the distance between the measurement point and magnetic dipole source. Finally, the feasibility of the algorithm is verified through experiments.