Dynamics of a magnetic gear with two cogging-free operation modes
Abstract
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 analysing 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.
Keywords
Cite
@article{arxiv.2008.05922,
title = {Dynamics of a magnetic gear with two cogging-free operation modes},
author = {Stefan Hartung and Ingo Rehberg},
journal= {arXiv preprint arXiv:2008.05922},
year = {2021}
}