The last few weeks I've been trying to eliminate vertical vibration to improve alt hold.
Using combinations of standoffs, rubber dampers, etc. it's possible to get a relatively clean acc-z graph.
What I don't understand is the change in behaviour when hovering manually.
With a lot of vibration my quadcopter hovers and flies a lot like the KK board.
With most of the vibrations removed from the z-axis the quadcopter behaves very nervous around the vertical axis.
Sudden movements up and down, etc.
What PID should I tune to improve on this behaviour?
Can someone help to explain this?
Best regards,
Jan Willem