Gyro stability?

[Chris Hibner]

Originally Posted by Ether

Could you please explain the theory behind that?

High pass filters on inertial sensors are very common in crash sensing and rollover sensing. The time constant for the filter needs to be MUCH longer than the typical duration of a typical maneuver or event. For example, a crash usually lasts about 100 ms, so a 3-second time constant on an HPF will allow all of the data to pass through virtually unaltered, but slow drifts of the sensor bias will be removed.

For FIRST, I wouldn't expect a turning event in one direction to last much longer than 5 seconds, so a time constant of 30 seconds should work pretty well.

With all of that being said, I think 1 deg/minute is not a big deal.


Lastly: a deazone is NOT a good approach. A deadzone with normal driving can easily create 10 times the error than what you're seeing now.