Karl Dall
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Karl Dall's Discussions

Vibration Issue on Quadcopter

Started Jun 11, 2011 0 Replies

Hi there, I have a question for you. I hope somebody can help me. I have built a quadrocopter using the mikrokopter.de frame (…Continue

PID Tuning

Started May 21, 2011 0 Replies

Hi there, I have built a quadrocopter .... only thing left to do is to tune my PID-controller. At the moment, I only implemented the PID controller for the roll angle and still trying to get the…Continue

 

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Karl Dall posted a discussion

PID Tuning

Hi there, I have built a quadrocopter .... only thing left to do is to tune my PID-controller. At the moment, I only implemented the PID controller for the roll angle and still trying to get the right parameters. At the moment, my values arep = 0.43i = 0.10d = 0.051(input value is the current and desired Euler angle for roll, motor commands are 0-255, control frequency is about 200Hz) The only problem is: I still got a steady-state error, but I can't compensate for it by increasing i. The…See More
May 21, 2011
Karl Dall replied to GillesW's discussion Starting with 1st IMU : a 9DOF Razor
"Hi there,   I have to answer my own question ;). I found the corresponding lines in the source code and switched the values according to my setup. And now, the data looks very good. Roll and Pitch angle are almost independent (except a little…"
Feb 14, 2011
Karl Dall replied to GillesW's discussion Starting with 1st IMU : a 9DOF Razor
"Hi there,   I have a short question. I'm trying to use your AHRS code with the 9DOF sensor stick of Sparkfun. I already changed the data acquisition (sensor stick has an ITG3200). Now, my problem is to figure out which axis directions you…"
Feb 14, 2011
Karl Dall replied to lucky13's discussion 6DOF IMU
"Ok, that's not so good for me :). But I'll get it to work. Obviously, there must be something wrong in my drift correction, as for other people it works... :)   But i double checked all sign values and inputs and found nothing there…"
Jan 17, 2011
Karl Dall replied to lucky13's discussion 6DOF IMU
"Hi there,   did you have any success with your problem. I ran exactly into the same problem. When roll changed -> pitch changed too. With a lot of work, i got the following situation:   Looking at the corrected output (without drift…"
Jan 17, 2011

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About Me:
drone builder from germany...
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building my own quadrotor

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Season Two of the Trust Time Trial (T3) Contest has now begun. The third round was a reliablilty/aerial photography round for both planes and copters, which is now closed. Stay tuned for the next round, beginning soon.

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