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progress of a cheap diy 6dof moving platform for a soaring f

Discussion in 'DIY Motion Simulator Projects' started by douwe, Feb 7, 2009.

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  1. douwe

    douwe New Member

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    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    Hi,
    Reporting some progres on the HI6SIM as shown at the FSWEEKEND

    http://www.youtube.com/watch?v=-cpfZHBwvQE

    Updated mij site with some pictures, sw and a video.
    And how to use a mini rolcentimeter to report the length of the platform legs.
    __________________
    Douwe HI6sim
    Member of the Hi5 Oldtimer Glider Flying Team
    <a class=postlink href=http://www.xs4all.nl/~jippes target=blank>http://www.xs4all.nl/~jippes</a>
    douwe, Feb 7, 2009
    #1
  2. tronicgr

    tronicgr

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    Welcome!

    We would like to hear more details from your project!!! :clap:

    I already took a look on your site this morning... : <a class=postlink-local href=http://www.x-simulator.de/forum/cool-6dof-platform-video-t1389.html target=blank>cool-6dof-platform-video-t1389.html</a>


    Thanos
    tronicgr, Feb 8, 2009
    #2
  3. egoexpress

    egoexpress Active Member

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    Amazing job! :clap:

    Could you tell us your next progress steps? Do you have the 6DOF motion algorithms finished already? How much is the payload?

    I am very interested in your project! Thanks for posting it here.

    Regards
    Christian
    egoexpress, Feb 8, 2009
    #3
  4. RaceRay

    RaceRay Administrator Staff Member SimAxe Beta Tester

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    My Motion Simulator:
    2DOF, DC motor, SimAxe, SimforceGT
    Hi Douwe,

    thank you very much that you followed my invitation :thbup:

    Great to see you posting here!

    regards, René
    RaceRay, Feb 8, 2009
    #4
  5. douwe

    douwe New Member

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    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    Also see the MyCockpit forum:
    <a class=postlink href=http://www.mycockpit.org/forums/showthread.php?t=14922 target=blank>http://www.mycockpit.org/forums/showthread.php?t=14922</a>
    douwe, Feb 8, 2009
    #5
  6. RaceRay

    RaceRay Administrator Staff Member SimAxe Beta Tester

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    Hi Douwe,

    i am sure the practical work on such a sophistical project is something that makes you more happy rather than writing documentations and project pages but wouldn´t it be great if you have a central community forum, where all your knowledge could be shared?

    Many of the x-sim members are really interested in more technical details about your sim, but it´s difficult for us to collect all the information about your motion sim from many different pages and forums.

    Furthermore, it would be easier for you to maintain only one project site ;D :)

    At mycockpit.com you wrote the whole payload is about 150Kg with air pressure balancing. Why do you prefer the balancing pumps?
    Are the lateral force too strong for the linear slide, so that the actuator would bend, due to the small diameter of the shaft?
    RaceRay, Feb 8, 2009
    #6
  7. douwe

    douwe New Member

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    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    The bending force is minimal as the load is on the central line.
    Douwe
    douwe, Feb 8, 2009
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  8. tronicgr

    tronicgr

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    Hi,

    New video uploaded:

    http://www.youtube.com/watch?v=fnRBX51UcN8


    I really like the manual 6DOF joystick controller!!!!! :thbup:


    Regards, Thanos
    tronicgr, Mar 10, 2009
    #8
  9. RaceRay

    RaceRay Administrator Staff Member SimAxe Beta Tester

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    My Motion Simulator:
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    Great thing :) Another idea of a 6DOF controller :

    Attached Files:

    RaceRay, Mar 11, 2009
    #9
  10. RaceRay

    RaceRay Administrator Staff Member SimAxe Beta Tester

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    My Motion Simulator:
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    RaceRay, Jun 3, 2009
    #10
  11. ebinary

    ebinary New Member

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    Great stuff! What did you you use for the connection from the actuators to the base? Did you use the same thing to connect to the platform?

    Did you fabricate it, or is there an off-the-shelf part that could be used?

    Thanks, Eric
    ebinary, Jul 7, 2009
    #11
  12. douwe

    douwe New Member

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    DC motor, Motion platform, 6DOF
    douwe, Jul 23, 2009
    #12
  13. Fahim

    Fahim Member

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    That video was really good.
    Fahim, Jul 24, 2009
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  14. ebinary

    ebinary New Member

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    Did you use a block of Derlin (or nylon, or similar) as the connection between the two pivots? Thats what it looks like in the picture. If so, is it strong enough? Seems like it could deform.

    Thanks, Eric
    ebinary, Jul 24, 2009
    #14
  15. douwe

    douwe New Member

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    Hi Eric,
    Late replay due to moving house.
    Yes it is nylon and it seems to be stong enough, no problems.
    The load is compression.
    Regards,
    Douwe
    douwe, Oct 7, 2009
    #15
  16. douwe

    douwe New Member

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    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    Preparing for the FSWEEKEND
    Progress of HI6SIM motion platform for Condor soaring sim.
    Force Sender/ Profiler from X-Sim driving the HFT (Hardware Force Translator)
    via 6 servo Pololu card.
    Top plate rotation Roll, Pitch, Yaw.
    Bottom plat Reverse motion Heave, Surge, Sway.
    The HFT drives the real size platform.
    HFT video:
    http://www.youtube.com/watch?v=Rj1NWvgo3HQ
    Short flight:
    http://www.youtube.com/watch?v=6LD9I9rwIuo
    Platform extras:
    http://www.mijnalbum.nl/Album=CSIBLTF8
    HFT construction:
    http://www.mijnalbum.nl/Album=R6RAXIWJ
    Mini universal joint construction from bicycle spoke nipples:
    http://www.mijnalbum.nl/Album=PBKCORX3

    My site will be updated later on.
    Douwe
    douwe, Nov 4, 2010
    #16
  17. douwe

    douwe New Member

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    DC motor, Motion platform, 6DOF
    douwe, Nov 11, 2010
    #17
  18. douwe

    douwe New Member

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    DC motor, Motion platform, 6DOF
    douwe, Feb 19, 2011
    #18
  19. egoexpress

    egoexpress Active Member

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    Hi douwe,

    while browsing your blog, I did find more recent videos of your platform, which show your simulator perform better :thbup:

    http://www.youtube.com/watch?v=VgRI_EjeBcc

    http://www.youtube.com/watch?v=brV0aeqrkQg

    But the motion sometimes looks out of sync with the screen.
    On the other hand, I dont know nothing about flight dynamics.
    Would be nice if you could tell us how it feels comparing to the real thing.

    I think I prefered a bit increased max roll angle though.

    Regarding position feedback. As you used vacuum cleaner motors, why didnt you use the cable roller as well to tinker some roller pots? Would have been less effort than the HFT I guess.

    Keep up the good work and keep us posted
    Regards
    egoexpress, Feb 19, 2011
    #19
  20. douwe

    douwe New Member

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    My Motion Simulator:
    DC motor, Motion platform, 6DOF
    Hi Egoexpres,
    The HFT is used to translate the 6 forces from the flight sim into Leg length.
    Instead of a complicated Reverse kinetics program.
    The leg driver compares the roller pot on the real leg with the sliding pot on the HFT.
    From video 7 on, the 6dof program for Condor from Ian (BFF) is used to provide leg length info to the leg driver.
    Will shoot same better video of the current state later on.
    Regards,
    Douwe
    douwe, Feb 19, 2011
    #20
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