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Tuning 6dof

Discussion in 'DIY Motion Simulator Projects' started by Gadget999, Apr 2, 2020.

  1. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    with a 6DOF you can emulate all the different DOF available

    however i have seen lots of sims where the motion is not how i would have expected

    for example SURGEis a forward and back motion - but i have seen lots of sims that tip back to simulate the force on the rear of the driver using gravity

    does this mean the tuning is set for a 3DOF instead of a 6DOF ?

    how would you configure Surge so the sim moves you forwards and tips you back at the same time
    Gadget999, Apr 2, 2020
    #1
  2. SeatTime

    SeatTime Well-Known Member

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    My Motion Simulator:
    AC motor, Motion platform
    You would add 'some' surge data into the pitch DOF with the right washout filters (not a easy task to get right in itself). It is required to give some length to the surge event using gravity, which normally ends too soon with just true surge in small Stewart Platforms. Often a compromise/balancing act, especially when you start to mix in real pitch. Edit - I'm guessing that you are talking about a Stewart Platform as my current sim is 6DOF, but not a Stewart Platform.
    Last edited: Apr 2, 2020
    SeatTime, Apr 2, 2020
    #2
  3. Gadget999

    Gadget999 Well-Known Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    yes - i did mean a stewart platform :)

    I will have a go at some tuning see if i can get it right - thanks for the advice
    Gadget999, Apr 2, 2020
    #3
  4. Gadget999

    Gadget999 Well-Known Member

    Joined:
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    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    i have a question about yaw

    using Rf2 the yaw seems a bit steppy - the car seems to jump into a yaw movement in a way that does not seem to be correct

    some parts of the track the car is twitching where i would not expect it to

    my yaw settings are 20% on all 6 actuators

    will increasing this number help out or should i be adding filters

    i am tempted to remove yaw and replace it with traction loss instead

    is yaw that useful on a driving sim ?
    Gadget999, May 1, 2020
    #4