Trying to read the data plot and wondering if I'm getting it right.I have managed to get afloat again after a month of poor weather and other commitments.Key change this time has been the addition of a data logging capability and the ability to send the servo to max to generate a disturbance to evaluate the control.
This data should allow me to now start optimizing the control.
First impressions are that the servo is responding far too much to chop but not actually managing to control the height that well.
I need to separate chop from height changes without adding a lag to the control loop.
The GPS logged 10 NM of sailing during an hour afloat with top speed of 17.1kts I did not push the speed as the control looked like it would become unstable at higher speeds.
View attachment 87155
Servo drives to Max UP, followed by a rapid flap move to almost the opposite extreme and then slowly with chop driven oscilations stabilizes
Nose pitches up, and then slowly comes back down
All the time the ride hight is dropping slowly and then gently comes back up?
Or am I misreading the data?