TY - JOUR
T1 - Magnetic Position System Design Method Applied to Three-Axis Joystick Motion Tracking
AU - Malago, Perla
AU - Slanovc, Florian
AU - Herzog, Stefan
AU - Lumetti, Stefano
AU - Schaden, Thomas
AU - Pellegrinetti, Andrea
AU - Moridi, Mohssen
AU - Abert, Claas
AU - Suess, Dieter
AU - Ortner, Michael
N1 - DBLP License: DBLP's bibliographic metadata records provided through http://dblp.org/ are distributed under a Creative Commons CC0 1.0 Universal Public Domain Dedication. Although the bibliographic metadata records are provided consistent with CC0 1.0 Dedication, the content described by the metadata records is not. Content may be subject to copyright, rights of privacy, rights of publicity and other restrictions.
PY - 2020/12/1
Y1 - 2020/12/1
N2 - This manuscript discusses the difficulties with magnetic position and orientation (MPO) system design and proposes a general method for finding optimal layouts. The formalism introduces a system quality measure through state separation and reduces the question “How to design an MPO system?” to a global optimization problem. The latter is then solved by combining differential evolution algorithms with magnet shape variation based on analytical computations of the field. The proposed formalism is then applied to study possible realizations of continuous three-axis joystick motion tracking, realized with just a single magnet and a single 3D magnetic field sensor. The computations show that this is possible when a specific design condition is fulfilled and that large state separations as high as 1mT/∘ can be achieved under realistic conditions. Finally, a comparison to state-of-the-art design methods is drawn, computation accuracy is reviewed critically, and an experimental validation is presented.
AB - This manuscript discusses the difficulties with magnetic position and orientation (MPO) system design and proposes a general method for finding optimal layouts. The formalism introduces a system quality measure through state separation and reduces the question “How to design an MPO system?” to a global optimization problem. The latter is then solved by combining differential evolution algorithms with magnet shape variation based on analytical computations of the field. The proposed formalism is then applied to study possible realizations of continuous three-axis joystick motion tracking, realized with just a single magnet and a single 3D magnetic field sensor. The computations show that this is possible when a specific design condition is fulfilled and that large state separations as high as 1mT/∘ can be achieved under realistic conditions. Finally, a comparison to state-of-the-art design methods is drawn, computation accuracy is reviewed critically, and an experimental validation is presented.
KW - Analytical method
KW - Computational magnetism
KW - Magnet system design
KW - Magnetic joystick
KW - Magnetic position sensor systems
KW - Python
UR - http://dx.doi.org/10.3390/s20236873
UR - https://www.mendeley.com/catalogue/f484cfac-6934-327e-9250-2cb02b3a3208/
U2 - 10.3390/s20236873
DO - 10.3390/s20236873
M3 - Article
SN - 1424-8220
VL - 20
SP - 6873
JO - Sensors
JF - Sensors
IS - 23
M1 - 23
ER -