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Question Jerking problem 2dof sim

Discussion in 'New users start here - FAQ' started by DawidMajewsi, Oct 26, 2022.

  1. DawidMajewsi

    DawidMajewsi New Member

    Joined:
    Sep 10, 2021
    Messages:
    8
    Balance:
    - 227Coins
    Ratings:
    +6 / 0 / -0
    My Motion Simulator:
    2DOF
    [​IMG]
    Good day. Please help someone to find a problem in my 2dof sym.
    The problem is that there are large jerks when braking (just before the vehicle stops).
    Drives cannot stabilize. Sometimes when the car is stopped, they make strange unforeseen movements.
    I also noticed when testing the outputs, there are large jerks when moving the sliders slowly.
    When I make a big quick jump, the movement is smooth
    Ideas please
    specification:
    - 2x wiper motor
    - server power supply
    Arduino Uno
    2x cermet Vishay P11VYN010K
    MODE2
    [​IMG]


    In the links below, videos and pictures of the configuration


    https://drive.google.com/file/d/1N2m8R3DCv-I0AhPJ6sp2TtZ1fjU7wCuk/view?usp=sharing
    https://drive.google.com/file/d/1Oe3nvKv_d_VzdVoRIht1wy7_j3YltcR1/view?usp=sharing
    https://drive.google.com/file/d/1i2tc_mc9EvDmCSg6imXZ54KqgQmRBPmy/view?usp=sharing
    https://drive.google.com/file/d/1-TBZE9XIN0nDyI4ohBFhkmea4i34d9Ta/view?usp=sharing
    https://drive.google.com/file/d/1-R4Vq7aVULuoJrJ-DJr9mdUcIUCBx43i/view?usp=sharing
    https://drive.google.com/file/d/1-A1A3UbCQu7BA40p2TPxvNyyphzgzcTt/view?usp=sharing
    https://drive.google.com/file/d/1-i-kGUfupUyrkv2RcoKSfF3zLXvjg6lB/view?usp=sharing
    https://drive.google.com/file/d/1-9EjnhmghTvh8l3KKbkScdOEmcy0yojv/view?usp=sharing
    https://drive.google.com/file/d/1-7NMY0yImK05amqLhcBFF48KxiXyEd5t/view?usp=sharing
    • Like Like x 1
    DawidMajewsi, Oct 26, 2022
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

    Joined:
    Jul 13, 2014
    Messages:
    21,513
    Occupation:
    Innovative tech specialist for NGOs
    Location:
    St Helens, Tasmania, Australia
    Balance:
    150,698Coins
    Ratings:
    +11,018 / 55 / -2
    My Motion Simulator:
    3DOF, DC motor, JRK
    It looks like your SMC3 settings could use a bit of refinement to tighten up the tracking response.

    In SimTools there is no reason to use Axis Limiting, set it to 100%.

    Grab a copy of the SimTools manual and keep it handing for reference: https://www.xsimulator.net/community/faq/rtfm-start-with-the-official-simtools-documentation.117/

    Then see the motion profile tuning tips in the FAQs: https://www.xsimulator.net/community/faq/steps-to-create-a-motion-profile.228/

    In particular start with less Axis Allocations, then capture the Max/Min values in the Tuning Center. After that temporarily disable all other axis by setting their Axis Allocation to zero and just work on one axis at a time, refining its allocation and TC settings. Then when you are happy with it disable that one and do another.
    • Like Like x 1
    noorbeast, Oct 27, 2022
    #2