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inertial_sensors [2018/07/21 15:10]
seandepagnier created
inertial_sensors [2022/10/05 19:18] (current)
seandepagnier
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--- picture -- +mpu9250/​mpu9255 –  Many have large accelerometer bias.   If it is too great, it  
-mpu9250/​mpu9255 – With yellow capacitor good+cannot be compensated and remain within the +- 2g range during operation. ​  ​8Further,​ many sensors have failed axes, failed sensors (no compass) ​  or simply do not work at all.    Verify all 9 axes especially if you do not have a reputable source.
  
  
--- picture -- +icm20948  ​ My experience has these sensors are identical in performance ​to the mpu9255, but the quality control ​is much better  They are unlikely ​to have issues.
-mpu9250/​mpu9255 - with orange capacitor accelerometer bias bad. +
- +
-=== Calibration === +
- +
- +
-For the autopilot ​to work correctly ​the inertial sensors must be calibrated. Typically this is just an offset or bias for each of the sensors. +
- +
-Many sensors have accurate accelerometer bias from factory, if not, calibration ​is needed. +
- +
-The gyroscopes continuously automatically update their bias, so calibration is not needed. +
- +
-The compass can change widely depending on where it is and what is around it so must be calibrated once mounted ​to the boat. +
inertial_sensors.1532185837.txt.gz · Last modified: 2018/07/21 15:10 by seandepagnier