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Design of Crank Arm style 6DOF platform

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by BM114, Jul 26, 2019.

  1. BM114

    BM114 New Member

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    I had some questions regarding the design of a 6dof platform using crank arms with worm gear motors.

    What is considered the best ratio for base size versus the pilot platform? I know that's a difficult question without going into some inverse kinematics, but I'm hoping to hear some personal experience to get an idea of a range. I've also had a chance to play around with Hexpod(hexpod.xyz), but I can't seem to find a good guide for it for the design capability it has.

    What is the best way to control the feedback loop and deliver motion information to the platform? I plan to use 10k single turn pots and so far I've seen the AMC1280 and sabertooth/kangeroo for feedback. I assume the Sabertooth setup requires a seperate microcontroller to deliver motion information from simtools whereas the AMC1280 handles the motion data and feedback.

    For reference I hope to get away with using this motor from ebay https://www.ebay.com/itm/300W-DC24V...e=STRK:MEBIDX:IT&_trksid=p2060353.m2749.l2649

    I already tested the motor with a 110mm ctc lever arm and was able to lift 50lbs with ease and 75 lbs with some strain.

    Any help answering these design questions would be great. Thank you in advance.