APM Altitude overshoot

Looks like I'm getting some altitude overshoot that causes the throttle controller to oscillate. See log graph below. It's most noticable when I execute the Takeoff 20m command but I can see evidence every time the copter climbs to a programmed altitude. The copter always appears to overshoot the altitude,  followed by  Throttle Out  oscillating a bit.  I was hoping to get some help from PID experts on where to start tweeking. Any suggestions on what parameters to fiddle with? I've also attached the log file.

Equipment:

APM 2.0

Arducopter 3.01

3DR Quad Frame, motors etc.

Log File 2013-10-14_11-11_1.log

 

3691069449?profile=original

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Replies

  • I'm running an APM2.0 so I haven't bothered with foam on the barometer. Maybe in vertical climb the barometer is picking up a higher pressure?
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