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Alt hold with heavy octocopter needs tuning. Any1 care to give an oke a hand?

Posted by Gareth Rens on January 25, 2012 at 10:42am

So my alt hold is up to sh*t...

It bobs up and down 3-4meters. Iv tried changing the alt hold P to 0.30, 0.35 and 0.4.

It works the best around 0.32. But it revs the motors too hard and pulses the copter up and down.

What should I change with regards to Alt hold I or Throttle something?

Thanks :)

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Replies

  • Gareth Rens January 25, 2012 at 12:40pm

    Ok, so after 20 mins of search on DIY and finding nothing. Google found me the following on DIY... Go figure.

    The Alt Hold parameters sets the amount of climb rate to counteract the current altitude error.

    The throttle gain sets throttle gain to counteract the current climb rate error. Right?

    Then would it be correct to say that (during ALT HOLD mode):

    - Rapid throttle output fluctuations / oscillations should be tuned out primarely using Throttle Rate parmeters?:

    - While not so rapid altitude oscillations shuld be dealt with using Altitude Hold parameters?

    Jason, if you can hear me, is the above correct. It sounds good to me!

    Thanks

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