SLYA072 may   2023 TMAG5253

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Mechanical Implementation
  6. 3Magnetic Implementation
  7. 4Magnet Sensor Placement
  8. 5Prototyping and Bench Testing
  9. 6Error Sources
  10. 7Post Processing
  11. 8Summary
  12. 9References

6 Error Sources

There are several possible sources of error, many of which correspond to fabrication and assembly. In the process of evaluating on the bench, such error sources are easier to identify, thereby making bench testing a good and necessary practice to embrace before proceeding to mass production. The following list shows all possible error sources identified for this particular design including the ones accounted for in the preliminary design:

  • Fabrication limitation and mechanical tolerance
  • Operating outside of the linear region
  • Device offsets
  • Roll, yaw, and pitch
  • Magnet variation
  • Device variation and temperature drift
  • External fields
  • Nearby material influence
  • Bench setup error
  • Supply tolerance
  • Measurement precision

For more in depth review of each of these error sources, see the HMI Rocker Switch With Hall-Effect Switches application note.