Magneto-mechanical resonators (MMRs) are innovative sensors that can track position, orientation and external physical quantities simultaneously by linking them to the torsional oscillation frequency, which is influenced by the distance between the rotor and stator magnets.
This study analyses the natural frequency dependence of MMR sensors with various magnet geometries. It demonstrates a robust method for determining frequency with minimal error, and shows that the distance–frequency relationship can be well modelled using an adapted dipole model that accounts for uncertainties. These findings and methods are valuable for designing and calibrating new MMR-based sensor technologies for use in applications such as medical procedures and industrial process engineering.
Jonas Faltinath, Fabian Mohn, Fynn Foerger, Martin Möddel, Tobias Knopp (2025). Natural Frequency Dependence of Magneto-Mechanical Resonators on Magnet Distance. IEEE Sensors Journal 25 (20), 38073.
