Acta Physica Sinica, Volume. 68, Issue 18, 188401-1(2019)

Performance analysis of spinning magnet as mechanical antenna

Wei Shi*, Qiang Zhou, and Bin Liu
Figures & Tables(12)
Schematic illustration of permanent magnet and equivalent magnetic dipole: (a) Permanent magnet; (b) equivalent magnetic dipole.永磁体和等效磁偶极子坐标示意图 (a) 永磁体; (b) 电流环(磁偶极子)
Variation of |Bz| versus distance (rectangular permanent magnet and ideal magnetic dipole): (a) y = 0, z = 0, along x-axis; (b) x = 0, z = 160 mm, along y-axis; (c) x = 0, y = 0, along z-axis; (d) x = 0, y = 180 mm, along z-axis.|Bz|随距离的变化(矩形永磁体和理想磁偶极子) (a) y = 0, z = 0, 沿x轴变化; (b) x = 0, z = 160 mm, 沿y轴变化; (c) x = 0, y = 0, 沿z轴变化; (d) x = 0, y = 180 mm, 沿z轴变化
Schematic illustration of the equivalence between spinning permanent magnet and spinning magnetic dipole: (a) Spinning permanent magnet; (b) spinning magnetic dipole.旋转永磁体与旋转磁偶极子的等效 (a) 旋转永磁体; (b) 旋转磁偶极子
Schematic illustration of the equivalence between spinning magnet dipole and orthogonal magnetic dipoles: (a) Spinning magnet dipole; (b) orthogonal magnetic dipoles; (c) orthogonal magnetic currents旋转磁偶极子与正交磁流元的等效关系 (a) 旋转磁偶极子; (b) 正交磁偶极子; (c) 正交磁流元
Coordinate system of the orthogonal electric dipoles.正交电偶极子的坐标系
Results comparison between the proposed method and the formula in Ref. [13] (along x-axis, the spherical coordinate parameters: , ).两种计算方法的结果对比(沿x轴, 球坐标变量为, )
Simulated magnetic flux density versus distance: (a) Air; (b) seawater.旋转永磁体的磁感应强度随距离的变化 (a) 空气; (b) 海水
Variation of simulated magnetic flux density with material and frequency: (a) 160 Hz; (b) seawater.旋转永磁体磁感应强度的一般变化规律 (a) 160 Hz; (b) 海水
Spinning permanent magnets array with two elements.旋转永磁体二元阵列
Performance comparison between spinning magnet array and single spinning magnet: (a) Along x-axis, the spherical coordinate parameters , ; (b) magnetic near field pattern at the horizontal plane (d = 50 m, r = 1000m, )二元旋转永磁体和单个旋转永磁体的场强对比 (a) 沿x轴, 球坐标变量为, ; (b) 近场水平面方向图(d = 50 m, r = 1000 m, )
Simulated magnetic flux density in the elevation plane.二元阵列俯仰面磁场分布
Simulated magnetic flux density of the spinning magnet array with two elements: (a) r = 1000 m; (b) r = 2000 m.改变初始旋转角, 二元阵列的水平面磁场方向图(a) r = 1000 m; (b) r = 2000 m
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Wei Shi, Qiang Zhou, Bin Liu. Performance analysis of spinning magnet as mechanical antenna[J]. Acta Physica Sinica, 2019, 68(18): 188401-1

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Paper Information

Received: Mar. 10, 2019

Accepted: --

Published Online: Jun. 28, 2020

The Author Email:

DOI:10.7498/aps.68.20190339

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