I am having a development kit DK20948 that is a 9 axis IMU sensor on it.
and to use it I am using SmartMotion eMD Page number 47, when using the CLI tool, I am getting data of the sensors and an accuracy flag, where accuracy is rated between 0-3, 0 is lowest.
I have tried to test the accuracy flag with Magnetometer by calibrating is by moving the development kit in an '8' motion. Before calibrating, my data was kinda gibberish but after calibrating, I am getting the reading in 2% compared to my phone's sensor and the accuracy flag goes from 0 to 3. So I believe accuracy flag represents kind of calibration.
I want to calibrate the same for accelerometer. I know software technique of putting it on a levelled surface and averaging it. But is there any phyical method in which I can calibrate it? I couldn't find anything reliable on google except someone's thesis where they put it on a linear actuator and fire it. I highly doubt the approach because not everyone has linear actuator lying around.