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3 DOF / 3x Mixed Vertical Actuators 24v 200w / adjustable rig

Discussion in 'DIY Motion Simulator Projects' started by seuszok, Nov 14, 2021.

  1. seuszok

    seuszok New Member

    Joined:
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    My Motion Simulator:
    3DOF, DC motor, Arduino, Motion platform
    Hello all
    I started thinking about the simulator after encountering structures based on wiper motors. Due to the fact that I do not want to build the simulator twice, I turned to a heavier structure based on 3 electric motors with the elimination of the lower frame.
    So I thought about lever driven linear actuators, their characteristics will not be linear but I had carriages and rails after cnc plasma construction and the ball screws are out of range.

    Moving on to the point (secondary market):
    - I bought 2 motors about 200W 24V (I'm looking for the third one)
    - INA KWVE20B rails and trolleys
    - aluminum profiles 40x80,40x40
    - bucket seat

    I modeled the drive mechanism (below its 3rd configuration :)
    I have initially assumed the frame size of 1200x600mm
    Motors located on the outer contour, rear ones will be in mirror but I was not waste time for that now.
    Actuators arre not finished, plates need be stronger on the back and will be installed on profiles by using 2 surfaces.

    Regards and I am asking for comments

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  2. Ads Master

    Ads Master

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  3. seuszok

    seuszok New Member

    Joined:
    Nov 8, 2021
    Messages:
    15
    Balance:
    87Coins
    Ratings:
    +6 / 0 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino, Motion platform
    Design is little bit change. Previous plate was too huge.
    Now, device was build on two plates is more compact.
    Stroke is some 70mm or 100mm.

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  4. Gadget999

    Gadget999 Well-Known Member

    Joined:
    Dec 27, 2015
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    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    I like your vertical actuators - they look neat

    However there is no advantage over a fixed base and lever arms

    Have you built the actuators yet ?
  5. Gadget999

    Gadget999 Well-Known Member

    Joined:
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    My Motion Simulator:
    2DOF, DC motor, Arduino, 6DOF
    Google - scotch yoke mechanism
  6. seuszok

    seuszok New Member

    Joined:
    Nov 8, 2021
    Messages:
    15
    Balance:
    87Coins
    Ratings:
    +6 / 0 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino, Motion platform
    Tomorrow I will finish the details and check if the boards fit in the mirror so as not to multiply the drawings for milling. the profile visible in the picture is the right part of the frame. We will see if that assembly will work :)
  7. ahoenksiluman

    ahoenksiluman Member

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    My Motion Simulator:
    2DOF, DC motor, Arduino, Motion platform
    good design mate, it can be compact, dont need lower chasis like conventional design...
  8. seuszok

    seuszok New Member

    Joined:
    Nov 8, 2021
    Messages:
    15
    Balance:
    87Coins
    Ratings:
    +6 / 0 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino, Motion platform
    Due to the fact that the aftermarket is not the supermarket ,plan is changes and requires redesign.

    I did not have access to the seat models, so I failed to measure the dimensions to prevent collisions (photo 10b, 23b)

    I changed the profiles, based on the assumption of 40x80, to 45x90. frame extended by 100mm (1200x700).
    This change requires a redesign of the engine mounting plates. (photo 11b-16b)

    The next engines that I was able to buy have a different design than the previous ones ... should be more reactive, they will be mounted at the rear (photo 11b, 12b)

    As potentiometers for motors, I wanted to use a ten-turn potentiometer and connect the motor shaft with a printed gear in the proportion of 1/16, which was to use 8 turns of the potentiometer for half the shaft.
    I have printed the samples, but there is no possibility for the gear to fast run potentiometer (hevy to fast rotate) - too low teeth (increasing the height of the teeth does not make sense because it allowed the entire structure to go away from room :) (21b)
    A colleague gave me the idea of replacing the potentiometer with the AS5600 hall sensor as a module:
    https://kamami.pl/enkodery/580650-modul-enkodera-magnetycznej-z-ukladem-as5600.html

    And another thing that needed improvement was the floating feet.
    When changing the geometry during the movement with the maximum tilt - the foot moves more than 8mm. (photo 19b, 20b)
    The feet are supposed to have 10mm of play (photos 17b, 18b).

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    Last edited: Nov 21, 2021
  9. seuszok

    seuszok New Member

    Joined:
    Nov 8, 2021
    Messages:
    15
    Balance:
    87Coins
    Ratings:
    +6 / 0 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino, Motion platform
    Some progress in garage to share :)

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  10. seuszok

    seuszok New Member

    Joined:
    Nov 8, 2021
    Messages:
    15
    Balance:
    87Coins
    Ratings:
    +6 / 0 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino, Motion platform
    The pedals will be mounted upside down so I changed the throttle and clutch mechanisms

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  11. seuszok

    seuszok New Member

    Joined:
    Nov 8, 2021
    Messages:
    15
    Balance:
    87Coins
    Ratings:
    +6 / 0 / -0
    My Motion Simulator:
    3DOF, DC motor, Arduino, Motion platform
    After mounting the steering wheel, pedals and gear knob - I checked my hidden plan.
    The system can be configured to be close to f1 or a normal car. Joints and locks serve this purpose. It is enough to mark the places on the profiles and secure the positions. I have to say that it looks promising. Both positions are ergonomic, but we'll see in motion.

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