AnsweredAssumed Answered

ADIS16490 gyro saturation behaviour

Question asked by fyhn on Apr 10, 2018
Latest reply on Apr 30, 2018 by fyhn

The datasheet states that the gyro of the ADIS16490 has a dynamic range of +/- 100 deg/sec. My understanding is that that means that measure accurate angular velocity within that range, but with no guarantee outside of it. I'm experiencing odd saturation-like behaviour when I'm near the limits. The output, computed as (delta angles * sample rate), seems to "stick" to +/- 44 deg/sec when the sensor is rotating fast. The output also seems to never exceed roughly 80 deg/sec. I'll attach a timeseries, where I've rotated the sensor around the x axis by hand, slowly at first and then faster.

 

What is the expected behaviour near the limits of the dynamic range, and what do you make of the readings I get?

 

Outcomes