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resources:eval:user-guides:inertial-mems:imu-overview [31 Aug 2021 21:32] – [Cross-Axis Sensitivity] Chas Frickresources:eval:user-guides:inertial-mems:imu-overview [31 Aug 2021 22:00] (current) – [Linear Acceleration Effect (Linear-g), Linear Acceleration Effect on Bias, Linear-g Rejection (Linear-g Sensitivity)] Chas Frick
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 Can be approximated with the formula: ND ≅ ARW/60* √2 Can be approximated with the formula: ND ≅ ARW/60* √2
  
-====== Linear Acceleration Effect (Linear-g) ====== 
-Measured in degrees/sec/g.  
  
 ====== Vibration Rectification Error (VRE) ====== ====== Vibration Rectification Error (VRE) ======
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 Example: For the ADIS16448, the accel axis to axis misalignment is 0.2 degrees. Therefore Cross-axis sensitivity accel is sin(0.2) = 0.197%. Gyro is sin(0.05) = 0.09%. Magnetometer: sin(0.25) = 0.247% Example: For the ADIS16448, the accel axis to axis misalignment is 0.2 degrees. Therefore Cross-axis sensitivity accel is sin(0.2) = 0.197%. Gyro is sin(0.05) = 0.09%. Magnetometer: sin(0.25) = 0.247%
  
-====== Linear-g Rejection (Linear-g Sensitivity) ====== +====== Linear Acceleration Effect (Linear-g), Linear Acceleration Effect on Bias, Linear-g Rejection (Linear-g Sensitivity) ====== 
-Unintended effect where linear acceleration is detected as rotation+Unintended effect where linear acceleration is detected as rotation. Measured in degrees/sec/g.  
 + 
 +====== Vibration Rejection (Gyros) ====== 
 +A combination of Linear-g and Vibration Rectification (VRE) specs. 
 + 
 +Vibration response of a gyro = Linear-g X-Axis Acceleration + (VRE X-Axis Acceleration)^2
  
 ====== Additional Resources! ====== ====== Additional Resources! ======
resources/eval/user-guides/inertial-mems/imu-overview.1630438320.txt.gz · Last modified: 31 Aug 2021 21:32 by Chas Frick