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Question Motor control accuracy

Discussion in 'DIY Motion Simulator Building Q&A / FAQ' started by Mengxi, Jun 14, 2018 at 12:10.

  1. Mengxi

    Mengxi New Member

    Joined:
    Apr 6, 2018
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    Hi all,

    I use an encoder to feedback the position in order to get my motor moving as expected.
    It works with bearing not more than 1 degree error and some adjustments before stop.

    However, when I want it to trumbling, like 0 deg, 20 deg, 0 deg, 20 deg....
    It goes very wrong, up to 9 degrees error at some positions (for an example, 0.4 deg, 25deg, 0 deg, 28.2deg...).

    Is there any advice for improving the accuracy of this situation ?
    Or improve the accuracy for the whole system, such as less adjustments ( adjustments create unexpected shaking occasionally ).
  2. Tim McGuire

    Tim McGuire "Forever a work in progress"

    Joined:
    Jul 26, 2015
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    245
    Occupation:
    Electrical Engineer (Student)
    Location:
    Canada
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    1,766Coins
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    +283 / 1 / -0
    My Motion Simulator:
    3DOF, DC motor
    What are you using to control your motors? Are you running a PID loop?