Simple question for Experts: GYRO DRIFT

Hi Guys,

I have a simple question for experts.

In my gimbal, I am having the PAN/ YAW feature which rotates the gimbal 0-360 degrees, using speed control mechanism. It works, though there seems to be some drift (a.k.a gyro drift, I guess). Here goes my question:

1. How to 'precisely' compensate for this drift for yaw for 'DCM' based algorithm. I read the 'yaw_sensor' (in degrees) value from AHRS.

2. Do I 'really' need a magnetometer/ 3D compass, or can I do without it?

I have implemented a PID based algorithm for closed loop stabilization of this
mount, it works though I wish to make it better by killing this drift
forever, forever, forever.

Any suggestions/ solutions are welcome.

Regards..

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Replies

  • If this is for a camera on a tripod, you might be better off using encoders of some sort.
  • I would think you'd need some drift-free reference to be able to reduce gyro drift whether GPS heading or magnetometer. If you look at the pdf documents associated with MatrixPilot, it provides some good insights into how the "DCM Algorithm" in MatrixPilot does drift compensation. I doubt drift can be completely eliminated. Is this for an aircraft?

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