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Thinking of 3DOF.

Discussion in 'DIY Motion Simulator Projects' started by Thend, Oct 7, 2009.

  1. Thend

    Thend New Member

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    hi! So I got inspired by Roland van Roy´s 3DOF motion platform. and started to think about maybe build one of those instead of a 2DOF. My only question is if X-sim software can support 3DOF and if there is a way to use 3 DC motors with thanos AMC board? And if there is mayor programming to make X-sim work with a 3DOF platform with almost the same setup as Roland.

    Posting a nice Paint picture to show the position of the actuators!
    The black thing on the picture is the actuators and the red is the platform.. doh :p

    [img600px]http://www.dufix.se/xsim/Untitled.jpg[/img600px]


    Thanks!
    Thend, Oct 7, 2009
    #1
  2. tronicgr

    tronicgr

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    No, x-sim doesn't support such coordinated motion of 3DOF. A special math plugin should be implemented for that.

    I do this in hardware in my microcontroller electronics! Here is some parts of the math section of my prototype firmware (AMC):


    DBank = 128 - Bank
    DPitch = 128 - Pitch
    DHeave = 128 - Heave

    Front = 128 + DPitch
    Front = Front + DHeave

    BackRight = 128 - DPitch
    BackRight = BackRight + DHeave
    BackRight = BackRight - DBank

    BackLeft = 128 - DPitch
    BackLeft = BackLeft + DHeave
    BackLeft = BackLeft + DBank


    Regards, Thanos
    tronicgr, Oct 8, 2009
    #2
  3. Thend

    Thend New Member

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    Ok Thanks, thanos!

    To my next question can your AMC --> Hbrigde handel 3 motors? I can remember something about it, like if you connect a second Hbridge where the lcd screen should go! or am I just dreaming for it? haha
    Thend, Oct 8, 2009
    #3
  4. tronicgr

    tronicgr

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    No, I did made that, but my lack of time held me back on this. Its still in beta.

    I connected both LCD and 2x DSMhb1.2b on one AMC1.5... ;-)
    With new firmware for 3DOF...
    tronicgr, Oct 9, 2009
    #4
  5. pooh

    pooh Member

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    My Motion Simulator:
    6DOF
    Hi Thanos,

    Any update here? I'm going to build 3DOF using big AC beasties and i'm in a process of finding a solution to control them...
    Velleman VM140 looks like the easiest way to go but what about xsim? Can it handle it?

    regards, Pooh.
    pooh, Mar 10, 2010
    #5
  6. Errol

    Errol New Member

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    My Motion Simulator:
    3DOF, 6DOF
    hi guys,

    My MDbox isn't sending anything t0 my Actuators. I've done the factory reset and set everything up again twice...

    Any thoughts/advice?

    Regards
    Errol, Jun 29, 2019
    #6
  7. Thanos

    Thanos Building the Future one AC Servo at a time... or 6

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    Electronics Engineer
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    My Motion Simulator:
    AC motor, Motion platform, 4DOF, 6DOF
    To completely reset the MDBOX:

    Fn 008=3721
    Fn 007= 1 and Fn 009=3
    F1 007= 3 and F1 009=1
    F2 007= 3 and F2 009=1
    F3 007= 3 and F3 009=1

    Then apply normal parameters for application


    Thanks
    Thanos
    Thanos, Jul 3, 2019
    #7