Multiwii 2.3 Quadcopter oscillating on wind

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guyjerby
Posts: 2
Joined: Fri May 01, 2015 1:38 pm

Multiwii 2.3 Quadcopter oscillating on wind

Post by guyjerby »

Hi,
I finished to build my multiwii quad, please try to assist mith my problem.
I never manage to make it stable in wind, I played with the PID setting, I tried the P between 1 to 9 and I between 0.01 to 0.5 but never manage to make it stable on wind.
when there is no wind - it is flying stable.

please advise.

The problem can be seen in the following video link:

https://youtu.be/EMRsIbNdFx4

Thanks,
Guy

Cereal_Killer
Posts: 221
Joined: Fri Mar 06, 2015 5:44 am

Re: Multiwii 2.3 Quadcopter oscillating on wind

Post by Cereal_Killer »

That doesnt seem like the wind to me man, could you post a video of it flying stable in calm conditions?

I was expecting to see it get blown around and maybe a slow oscillation down to the ground, to me that looks like a bad tune overall causing vortec ring state leading to a straight down fall from the sky. It's fast so that leads me to believe it's probably a roll P related issue. What happens if you try to give it forward elevator during that (you can usually fly forward out of a VRS)

There just isnt enough info to help you, please post your entire setup (including parts list) and then also post your current PID's. I assume you're in angle mode in that video? Does it do this in acro mode too?

guyjerby
Posts: 2
Joined: Fri May 01, 2015 1:38 pm

Re: Multiwii 2.3 Quadcopter oscillating on wind

Post by guyjerby »

Hi,
Thanks for your replay - yes the wind wasn't cause it.
it was related to the minimum throttle value, i raise it up and now it works fine.

Thanks!
Guy

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