Accelerometer calibration testing

Just fixed some bugs in the sensor simulation and first thing I did was to test the accelerometer calibration code.

I configured some noise in the sensor – 0.1g, a big bias (2.5, 1, -0.3) and some scale (0.9, 1.1, 1.04) and ran the 6 step Gauss-Newton calibration.



To my surprise the algorithm converged to almost the exact sim input I configured:


The scale found is actually 1/sim scale which is ok.

The error is ~0.01 for the bias and ~0.005 for the scale.


I must say I’m impressed. One less thing to worry about.

Next on the list is calibrating at 2 temperatures to be able to compensate temp drift.



Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s