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Question 6dof diy actuator to 4dof ibt2 24v brushed motors

Discussion in 'DIY Motion Simulator Projects' started by Stefzouille, Dec 26, 2023.

  1. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    Apologies, my bad, the Sabertooth was mentioned here: https://www.xsimulator.net/community/goto/post?id=244383#post-244383

    That aside, the same applies, leave yourself plenty of PSU headroom as there are large power spikes generated in fast reversals.

    IBT2s can be a bit finicky with higher voltage, so search and review other similar IBT2 controlled member builds.
    • Like Like x 1
  2. Stefzouille

    Stefzouille Member

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    My Motion Simulator:
    2DOF, DC motor, 4DOF
    I have 2sabert 2x32A or 4 ibt2, so I can take one or the other, which would be best in your opinion?
    Hmmm ibt2 in 24v ? Is the limit 27v normally?
  3. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    • Like Like x 1
  4. Stefzouille

    Stefzouille Member

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    uh yes, I have already uploaded the code, great as I do that 4dof is good. I'm looking for the power supply.. I thought it damaged the cards to put resistance on the sabert?

    ok for 24v 32A :
    Result
    0.75 Ohms dissipates 768 Watts at 32 Amps

    Alternative
    1 Ohms dissipates 576 Watts at 24 Amps
  5. Stefzouille

    Stefzouille Member

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    My Motion Simulator:
    2DOF, DC motor, 4DOF
    so the motors need 750w each to power them! but the sabert only has one power supply for 2 motors so it would need 2000w? what? lol
    we go well beyond 32a?!? erf :/


    Tension :
    24,00 V
    Intensité :
    75,00 A
    Puissance :
    1 800,00 W
  6. accelero

    accelero Member

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    Hi, as a former user of sabertooth motor drivers, aren't these values a bit optimistic............;;considering those the 6 dof full power would be 5400 w ???
    If my records are uptodate, the strongest Sabertooth is the 2 x 60 Amp one, and I 've used it to power 120 W motors :rolleyes: easily
  7. Stefzouille

    Stefzouille Member

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    hi ,
    I only use 4 cylinders, i got 2dof wiper 120w 24v 20A and it run with the sabert 2x12 for 9A

    750w is max for the motors, with dc 24v 1000w it s ok normaly?
  8. Stefzouille

    Stefzouille Member

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    My Motion Simulator:
    2DOF, DC motor, 4DOF
    Hi, i dont see a schema for battery with ACourant, i’m here :


    750w/24v=32A x3(approximate tolerance) =96A
    So I must have a power supply and card that tolerates 100A peak power and 35A idle

    So 1000w power supply for ibt2
    or 2000w for sabert 2x60a

    And 30-40a fuse everywhere to protect everything.

    And a 20a circuit draws a direct line from the table for the 4 actuators.

    :popcorn

    with this :
    https://www.xsimulator.net/community/threads/6-dof-350w-motors-with-ibt-2-43a-h-bridge.11538/page-2

    ibt2 x2 per motor:

    [​IMG]
    Last edited: Dec 31, 2023
  9. Stefzouille

    Stefzouille Member

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    My Motion Simulator:
    2DOF, DC motor, 4DOF
    Hi sry got one error? :nerd?

    sorry if someone could tell me which one is correct for 2 ibt2? because on a bridge on one side there is a card for the negative and a card for the positive and on the other side it is not the same wiring of the motors? Has anyone noticed this flaw on the diagram?

    [​IMG]
    Ok not see that lol ..

    [​IMG]