一种圆鞍形磁屏蔽线圈的设计与性能研究

doi:10.3969/j.issn.1000-1158.2015.05.20

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Abstract The magnetic field distribution expression of one pair of round-saddle coils at any point in space is theoretically inferred based on the Biot-Savart Law, and the structure of the coils is optimized. The fact that the round-saddle coils can produce uniform magnetic field of a certain region is proved, and the partial magnetic field distribution of round-saddle coils is given quantitatively. The designed coils can produce uniform magnetic field of a certain area which is 28% of the axis area which the uniformity can be 1%, 10% of the axis area which the uniformity can be 0.1%. The maximum value of the magnetic field compensation of coils of one single round can be 15 nT in the current of 1 mA,and the relative deviation is less than 0.14 nT. Therefore the correctness of the magnetic field distribution expression is verified, providing the theoretical basis and reference for the design and research of the dimensional magnetic field compensation system.

Key words： metrology uniform magnetic field biot-savart law round-saddle coils magnetic shielding

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	Articles by authors
	ZHAO Wei-xia
	DONG Quan-lin
	SUN Mao-duo
	DING Ying
	YANG Ya-jiao
	DANG Yu-jie

Cite this article:

ZHAO Wei-xia,DONG Quan-lin,SUN Mao-duo, et al. The Design and Research on Performance of Round-saddle Coils for Magnetic Shielding [J]. Acta Metrologica Sinica, 2015, 36(5): 540-545.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2015.05.20 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2015/V36/I5/540