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Empirical study of magnet distance on magneto-mechanical resonance frequency
Citation Link: https://doi.org/10.15480/882.14320
Publikationstyp
Journal Article
Date Issued
2024-12-19
Sprache
English
Author(s)
Faltinath, Jonas
Tsanda, Artyom
TORE-DOI
Volume
10
Issue
4
Start Page
377
End Page
380
Citation
Current Directions in Biomedical Engineering 10 (4): 377-380 (2024)
Publisher DOI
Publisher
De Gruyter
Peer Reviewed
true
Determining the position and orientation of a medical instrument is essential for accurate procedures in endoscopy, surgery, and vascular interventions. Recently, a novel sensor based on torsional pendulum-like magneto-mechanical motion has been proposed. This sensor is passive, wireless and inductively coupled to a transmit-receive coil array. This setup allows the determination of all 6 degrees of freedom using the characteristic resonance of the sensor. Additional physical quantities such as temperature and pressure can be measured based on the frequency of the sensor, which mainly depends on the distance between the two involved permanent magnets. In this study, we analyze a sensor composed of two magnetic cylinders with variable magnet-to-magnet distance and a basic physical model based on a dipole assumption. Experimental analysis of the resonance frequency and comparison with the model values show both qualitative and quantitative agreement with an average relative error of only 0.8 %. This validates the implemented model and shows the suitability of our magneticmechanical resonator made from cylindrical permanent magnets for sensing applications.
Subjects
Magneto-Mechanical Resonator | Sensing | Resonance Frequency | Magnet-to-Magnet Distance
DDC Class
610: Medicine, Health
621.8: Machine Engineering
530.42: Fluid Physics
620.3: Vibrations
Publication version
publishedVersion
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Name
10.1515_cdbme-2024-2092.pdf
Type
Main Article
Size
3.41 MB
Format
Adobe PDF