7.3.2 - Improved Angle Sensing by Shape-from-Motion Calibration of 3D Magnetic Sensors
- Event
- EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich - Band
- Lectures
- Chapter
- Sensor Fundamentals & Modelling
- Author(s)
- B. Kar, P. Rutquist, O. Paul - University of Freiburg,Freiburg (Germany)
- Pages
- 238 - 239
- DOI
- 10.5162/eurosensors2026/7.3.2
- ISBN
- 978-3-910600-12-6
- Price
- free
Abstract
Axis non-orthogonality in multi-axis magnetic sensors introduces cross-talk, distorts the reconstructed magnetic field, and limits measurement accuracy. In this contribution, we present a shape-from-motionbased method to estimate and compensate for axis non-orthogonality in a 3D magnetic sensor by exposing the sensor to a magnetic field of constant magnitude at six orientations. The key advantage of this approach is that it does not require precise control of the field directions nor the magnitude. In the reported case, we demonstrate the improvement of the measured relative angles by a factor of 3.5.