Optimization Design of Biplane Coil With Ultrasmall Coil Constant Based on Co-Directional Ferromagnetic Boundary Coupling Effect

IF 5.6 2区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Instrumentation and Measurement Pub Date : 2025-02-13 DOI:10.1109/TIM.2025.3533616

Haoting Wu;Xiuqi Zhao;Peiling Cui;Haifeng Zhang;Jiawen Liu;Tong Wen

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引用次数: 0

Abstract

There are two problems in the low-noise magnetic field compensation of desktop small magnetic shielding boxes (SMSBs). First, the uniformity of the magnetic field generated by the coil is reduced due to the strong coupling effect of the ferromagnetic boundary. Second, the larger coil constant requires a highly accurate current source. To improve uniformity and reduce the coil constant, an optimization design method with an ultrasmall coil constant biplane coil (BC) based on the same trend coupling effect of the ferromagnetic boundary is proposed. In this article, for the first time, the relationship between coil constant and shielding distance is analyzed by constructing the magnetic field and distance (M-D) function. The parameters of the primary coils and the secondary coils are optimized by particle swarm optimization (PSO). The combined BCs (CBCs) with an ultrasmall coil constant are designed based on the double image method and M-D function. Compared with traditional BCs, the

${B}_{x}$

and

${B}_{y}$

coil constants of CBCs are reduced by two orders of magnitude to 41.8 and 35.4 nT/A, respectively, and the

$ {B}_{z} $

coil constant is reduced by three orders of magnitude to 49.9 nT/A. The uniformity of the magnetic field in the target area is improved by 4.4 times in the X-direction and 7.4 times in the Z-direction. The peak-to-peak value of the magnetic field is reduced by 24.7%, and magnetic field noise is reduced by 49% at 1 Hz in the closed loop.

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来源期刊

IEEE Transactions on Instrumentation and Measurement 工程技术-工程：电子与电气

CiteScore

9.00

自引率

23.20%

发文量

1294

审稿时长

3.9 months

期刊介绍： Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications. The scope of these papers may encompass: (1) theory, methodology, and practice of measurement; (2) design, development and evaluation of instrumentation and measurement systems and components used in generating, acquiring, conditioning and processing signals; (3) analysis, representation, display, and preservation of the information obtained from a set of measurements; and (4) scientific and technical support to establishment and maintenance of technical standards in the field of Instrumentation and Measurement.