Hello all,

had my first flight with an APM2 (arduplane 2.34) yesterday. Great experience ;-)

I used the parameter set for the Skywalker from the download section.

But when descending in automatic flight, the plane started pumping quickly and the wings of the Skywalker were bending up and down like crazy. Really scary. So I switched to manual flight.

This is, what it looks like in the log:

3690940800?profile=original

Two questions:

Which PID parameter do I have to change, to stop this wobbling during the descend?

In addition, all the movements of the plane (roll and pitch) during AUTO-mode are flown very sharply and do not look smooth. Any idea, which parameters to modify to soften the flight behaviour?

Thanks a lot

Dirk

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –

Replies

  • Thanks to all of you. I changed a lot of the parameters and will check them in flight ASAP.

  • Hi Dirk,


    It's probably "Servo Pitch PID" that is too high.

    However,

    I'd suggest you may wish to reset the arudupilot and start again with the default settings following this page to tune the PID's in:

    http://code.google.com/p/ardupilot-mega/wiki/Tuning

    I found that the "skywalker" settings were *way* too high for my skywalker, you will notice that they are *much* higher that the default values (which by contrast are very conservative (low) for most airframes I think).

    You should find that with stock defaults, it will fly ok, but pitch and roll will be a bit sluggish (not crisp) in FBW_A. Then you can increment them until it flys well (as per that tuning page). That's probably a better process than starting with the skywalker settings and adjusting them downwards.

    Good luck,

    Dave

This reply was deleted.

Activity

T-MOTOR liked T-MOTOR's profile
19 hours ago
DIY Robocars via Twitter
RT @gclue_akira: 柏の葉で走行させてるjetracerの中身 #instantNeRF #jetracer https://t.co/giVvuE4hP7
Jul 4
DIY Robocars via Twitter
Cool web-based self-driving simulator. Click save when the AI does the right thing https://github.com/pncsoares/self-driving-car
Jul 4
DIY Robocars via Twitter
RT @donkey_car: Human-scale Donkey Car! Hope this makes it to a @diyrobocars race https://www.youtube.com/watch?v=ZMaf031U8jg
Jun 25
DIY Robocars via Twitter
Jun 25
DIY Robocars via Twitter
Jun 16
DIY Robocars via Twitter
RT @GrantEMoe: I won my first @diyrobocars @donkey_car virtual race! Many thanks to @chr1sa @EllerbachMaxime @tawnkramer and everyone who m…
Jun 13
DIY Robocars via Twitter
RT @gclue_akira: JetRacerで自動走行したコースを、InstantNeRFで再構築。データセットは別々に収集 #jetracer #instantNeRT https://t.co/T8zjg3MFyO
Jun 13
DIY Robocars via Twitter
RT @SmallpixelCar: SPC 3.0 Now the motor also works. This car is doable. I just need to design a deck to mount my compute and sensors. http…
Jun 13
DIY Robocars via Twitter
RT @SmallpixelCar: My new car SPC 3.0. https://t.co/CKtkZOxeNQ
Jun 7
DIY Robocars via Twitter
RT @SmallpixelCar: High speed at @diyrobocars thanks @EdwardM26321707 for sharing the video https://t.co/o4317Y2U1S
Jun 7
DIY Robocars via Twitter
RT @SmallpixelCar: Today at @RAMS_RC_Club for @diyrobocars. Used @emlid RTK GPS and @adafruit @BoschGlobal IMU. Lap time 28s https://t.co/R…
May 28
DIY Robocars via Twitter
May 15
DIY Robocars via Twitter
May 14
DIY Robocars via Twitter
May 13
DIY Robocars via Twitter
RT @f1tenth: Say hi to our newest #F1TENTH creation for @ieee_ras_icra next week in Philly. It’s going to be huge! 😎 🔥 @AutowareFdn @PennEn…
May 13
More…