Dynamics of a magnetic gear with two cogging-free operation modes

Dynamics of a magnetic gear with two cogging-free operation modes
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具有两种无齿槽运行模式的磁力齿轮的动力学

DOI:
10.1007/s00419-020-01830-z
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发表时间:
2021
影响因子:
2.8
通讯作者:
Rehberg
Rehberg
中科院分区:
工程技术4区
文献类型:
--
作者:
Hartung;Rehberg

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实验研究了两个旋转球磁体的耦合。对于输入和输出旋转轴之间的两个特定角度,观察到无齿槽耦合,其中从动磁体锁相到驱动磁体。这两种操作模式之间的显著差异是从动磁体的旋转方向相反。对于其他角度,实验揭示了一个更复杂的动力学行为,分为三个不同的类。这是通过分析从驱动磁体的周期性运动的偏差,并通过测量该旋转的总谐波失真来完成的。实验结果可以理解的数学模型的基础上纯偶极-偶极相互作用,增加了足够的摩擦条款。
The coupling of two rotating spherical magnets is investigated experimentally. For two specific angles between the input and output rotation axes, a cogging-free coupling is observed, where the driven magnet is phase-locked to the driving one. The striking difference between these two modes of operation is the reversed sense of rotation of the driven magnet. For other angles, the experiments reveal a more complex dynamical behavior, which is divided in three different classes. This is done by analyzing the deviation from a periodic motion of the driven magnet, and by measuring the total harmonic distortion of this rotation. The experimental results can be understood by a mathematical model based on pure dipole–dipole interaction, with the addition of adequate friction terms.
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