2019-10-29 02:42 AM
Background:
I want to calculate tilt angle of my resting device (g is the only acceleration present) using the accelerometer(AIS328DQ) outputs. Consider initial accelerometer readiing as Aref and current reading as A.
I am using realtive angle θ = arccos(Aref.A) (dot product & ||A|| = ||Aref|| = 1 g)
The major considerable errors in the Aref and A are offset error and sensitivity error.
Question:
But when I solved for Δθ mathematically using the calibrated Aref and calibrated A, the offset error is not getting eradicated.
Please let me know if my assumption is wrong. and is there a material related to calibration technique specifically for AIS328DQ
Thank you very much in advance.