this is an issue ive had since my first flights with v2.1, and has stuck with me through versions 2.2, 2.3, and is exactly(?) the same now in v2.5
on yawing, if i am very very careful to ease the stick back to centre i can make it pull smoothly out of a turn, but if i snap the stick back to centre it stops turning pretty much straight away and then rebounds back about 15 or 20º.
with my very limited experience of PID tuning i can recognise this as simple overshoot in the control loop, but while im making good progress tuning the pitch and roll, i cant see any significant change when adjusting YAW RATE values.
frame:
- jDrones Hexa
- 880KV
- 12x3.8 APC
- 2.3Kg AUW
PID:
- STAB P:3.7; I:0; D:0.08
- RATE P:0.09; I:0,02; D0.008
- STAB YAW P:6; I:0
- RATE YAW P:0.08; I:0.025; D:0.004
these YAW values arent particularly better or worse than others ive tried, theyre just the latest thing ive flown with. has anybody else solved this problem, any clues about where to start? are my YAW P values simply way too high?
regards,
james
Replies
Has this ever been solved in software.
I have been searching around this issue for some time on 3.1.2 and 3.1.4
Regards,
Nils
I've been flying my tricopter with APM2 for 1 day now so I'm hardly knowledgeable enough to comment, but I'm flying in ACRO mode for now and I'm unable to tune it for fast yaw response without overshoot. My previous KK board had great yaw response with no overshoot on the same airframe so I know it's possible.
BTW thanks for the hard work dev team.
oh come on .. this behaviour has been present at least since v2.0.37 (http://diydrones.com/forum/topics/question-regarding-yaw-and-pid)
somebody must have something to say about this, even if its just "thats how it works, deal with it" ;)
james