C10.2 Rotary Encoder Magnet Inspection with Noise Elimination
- SMSI 2021
2021-05-03 - 2021-05-06
- SMSI 2021 - Sensors and Instrumentation
- C10 Magnetic Sensors
- K. Vervaeke - Magcam NV, Leuven (Belgium)
- 222 - 223
We report on a method to measure a noise-free magnetic field distribution of rotary encoder sensor magnets, based on Magcam’s established 3-axis magnetic field camera technology. This method involves measuring the 3-axis magnetic field distribution in a 2D plane at close distance above the magnet and extrapolating this field distribution into a 3D volume using a patented algorithm that yields virtually noise-free data at larger distances. This powerful method allows to evaluate the magnetic field distribution and the magnet’s intrinsic angular error, with a resolution better than the measurement resolution of the originally measured plane.