This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
resources:eval:user-guides:inertial-mems:imu-overview [31 Aug 2021 21:32] – [Cross-Axis Sensitivity] 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 | Can be approximated with the formula: ND ≅ ARW/60* √2 | ||
- | ====== Linear Acceleration Effect (Linear-g) ====== | ||
- | Measured in degrees/ | ||
====== Vibration Rectification Error (VRE) ====== | ====== Vibration Rectification Error (VRE) ====== | ||
Line 55: | Line 53: | ||
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: | 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: | ||
- | ====== 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/ |
+ | |||
+ | ====== 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! ====== |