Deep dive into the PID controller D-Term component

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  • เผยแพร่เมื่อ 15 พ.ย. 2024

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  • @uavtech
    @uavtech 4 ปีที่แล้ว +2

    Nice work. It underpins how simple the PID controller math really works.

    • @FPVUniversity
      @FPVUniversity  4 ปีที่แล้ว +2

      Math is not really a problem. Problem is with understanding the basics instead of repeating blindly what someone recorded in the internets years ago without checking ;)

    • @uavtech
      @uavtech 4 ปีที่แล้ว

      ​@@FPVUniversity Agreed. I never trust anyone. Someone steer you wrong years ago? Helio?

    • @FPVUniversity
      @FPVUniversity  4 ปีที่แล้ว

      I think 75% of the video trying to explain what Dterm does on a MR ware recorded by peopl who never really understood that Dterm is only keeping acceleration at 0

    • @uavtech
      @uavtech 4 ปีที่แล้ว

      ​@@FPVUniversity "what Dterm does on a MR ware recorded by people".
      Not following. I must not be subscribed to that one.
      What I don't understand is how it is such a mystery when it is so simple. I think to some extent that is marketing so folks think things are magic when it is really just simple math and very basic core drivers. From there, when things get layered on that is when it gets complex (mixing of axis, filter effects on PIDs, effects of delay in the signal, etc.)

  • @ericapelz260
    @ericapelz260 4 ปีที่แล้ว +2

    Thanks Pawel, I've worked in digital controls for years and this is the clearest explanation of Dterm I've ever seen.

  • @rongeernaert1208
    @rongeernaert1208 หลายเดือนก่อน

    Thanks for the Deviratieve Details lesson !🤠

  • @MCsCreations
    @MCsCreations 4 ปีที่แล้ว +1

    Really, really interesting, Pawel! Thanks a lot! 😃
    I just went back to my first semester of college! 😂
    Stay safe there with your family! 🖖😊

    • @pawanv86
      @pawanv86 4 ปีที่แล้ว +1

      Lmao first semester more like 6th for me

  • @BBFPV
    @BBFPV 4 ปีที่แล้ว +2

    Can you make a block diagram of the hole loop?
    There are 2 "D" values. The dFF comes from the stick and it is the FEED FORWARD column, the second one comes from the kwad movement and it is in the D column?
    7:10 the derivate of sin is cos.

    • @FPVUniversity
      @FPVUniversity  4 ปีที่แล้ว

      Have you watched this? th-cam.com/video/2zoy7-Ss1Oo/w-d-xo.html

  • @ibnfpv
    @ibnfpv 4 ปีที่แล้ว

    Best explanation ! Wants more! Deep dives like that

  • @AR-wj2qe
    @AR-wj2qe 3 ปีที่แล้ว

    Thanks for this clear video that reminds me 15 years ago my studies. Applied to my hobby, it really makes sense. They should have done some expermients with quad to make the stydies more interesting jaja...maybe it was not so developped also...
    BTW, many thanks, I juste have switched from BF to Inav 2.6. Still work in progress, but exciting ! So thanks for your work

  • @AlCoTaN83
    @AlCoTaN83 4 ปีที่แล้ว

    I love this kind of videos. Thanks

  • @ktyjkl4423
    @ktyjkl4423 4 ปีที่แล้ว

    Thanks for the video

  • @divya_
    @divya_ 4 ปีที่แล้ว

    Amazing! Keep these coming!

  • @sparrow082
    @sparrow082 4 ปีที่แล้ว

    Why not just add an independent I-term to the D term? When you have a D-term spike the I-D-turm would add the time element, wouldn't it?

    • @FPVUniversity
      @FPVUniversity  4 ปีที่แล้ว

      Not really. Integral is the oposite of Derivative. You compute Integral of Derivative and have original signal instead

    • @sparrow082
      @sparrow082 4 ปีที่แล้ว

      @@FPVUniversity OK not exactly an integral but a time system that says if D is rising to a 7 and then back to a 0 within 3 frames you probably need something closer to a 3, But if you go from a 0 to a 7 to 0 in 5 frames then you probably need closer to a 7.

  • @DeadTalkLive
    @DeadTalkLive 4 ปีที่แล้ว

    Nice clip ♥♥! As a fellow TH-camr, I am on the lookout for fresh ideas! Good Job!