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--- resources:eval:user-guides:inertial-mems:imu-overview [04 Aug 2021 02:42] – [Additional Resources!] Chas Frick
+++ resources: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
@@ Line 43: / Line 43: @@
 Can be approximated with the formula: ND ≅ ARW/60* √2
-====== Linear Acceleration Effect (Linear-g) ======
-Measured in degrees/sec/g.
 ====== Vibration Rectification Error (VRE) ======
@@ Line 50: / Line 48: @@
 ====== Cross-Axis Sensitivity ======
-Unintended effect where rotation/acceleration from one axis is detected on another axis
+Unintended effect where rotation/acceleration from one axis is detected on another axis.
+Can be calculated from axis to axis misalignment error for accels/gyros: sin(axis to axis misalignment) in %
-====== Linear-g Rejection (Linear-g Sensitivity) ======
+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%
-Unintended effect where linear acceleration is detected as rotation
+====== 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. 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! ======

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