| Citation: | LYU Zhifeng, ZHANG Jinsheng, WANG Shicheng, et al. Coupling analysis between magnetic shielding device and magnetic field simulator[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(6): 1194-1202. doi: 10.13700/j.bh.1001-5965.2017.0399(in Chinese)
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The hardware in the loop simulation of geomagnetic navigation is the key link for the geomagnetic navigation from theory to engineering, and the technology of geomagnetic field environment simulation is the bridge between the computer simulation and the hardware in the loop simulation. Aimed at the coupling problem of the magnetic shielding device and the magnetic field simulator in the magnetic environment simulation system, the method of simulation analysis and experimental verification is adopted. First, simulation experiments are designed to explore the coupling relationship between the magnetic shielding device and the magnetic field simulator by the Ansoft Maxwell software. Then, a small geomagnetic field environment simulation system is established, including solenoid coil and magnetic shielding canister. Based on this system, the simulation results are verified by experiments. The simulation and experimental results show that the magnetic field simulator will cause serious magnetization on the magnetic shielding device under the condition of high current and strong magnetic field, which will affect the shielding effect. The linearity and uniformity of magnetic field simulator will not be affected by the magnetic shielding device, but the magnetic field of the axis center will increase. The magnetic shielding device can make the inductance of the magnetic field simulator increase, so that the real-time property becomes worse. The conclusions obtained in this paper can provide theoretical basis for the design of geomagnetic field environment simulation system.
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