Log analysis for PID

🧪 Flight Testing & Log Analysis
1

Hi all, I’m trying to tune my PID just now and I have only managed to tune Roll and Pitch before my battery dies.

Below is my PID log and can anyone please help on how I can improve my PID? Whether to increase or decrease

Screenshot (14)
Screenshot (14)1189×872 145 KB
Screenshot (15)
Screenshot (15)1044×862 113 KB

2

Please see here:
https://docs.px4.io/master/en/log/flight_review.html
and here:
https://docs.px4.io/master/en/config_mc/pid_tuning_guide_multicopter.html
Also what air frame are you useing?

3

Hi @jimdgit thanks for responding.

I am using F450, Pixhawk 2.4.8, Rpi 4 and PiCamera.

I read the page, and I spot possibly one reason could be high vibration. What else?

4

It would be best if you post a link to the log it self.
The pitch rate seems to need more P at first on the rate controller.
The roll - not sure what a flat line like that means.