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Question Motor is stop working sometime

Discussion in 'SimTools DIY Version' started by Schopfer, Jul 26, 2018.

  1. Schopfer

    Schopfer Member

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    My Motion Simulator:
    2DOF, 3DOF, DC motor, Arduino
    Motor is stop working sometime
    Fpid / 4
    Kp = 660
    Ki = 0
    Kd = 0
    Ks = 60
    Fpwm = 20kHz
    PWMmin =0
    PWMmax = 245
    PWMrev = 240
    Max Limits = 0
    Clip Input = 0
    Deadzone = 0

    [​IMG]
    Schopfer, Jul 26, 2018
    #1
  2. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    The movement range is too large and there may also be an overshoot, combined with poor lever angle.

    Torque is most effectively applies at 90 degrees, and is inefficient if movement is more than 40 degrees either side of that.
    • Agree Agree x 2
    noorbeast, Jul 26, 2018
    #2
  3. yobuddy

    yobuddy Well-Known Member Staff Member Moderator SimAxe Beta Tester SimTools Developer Gold Contributor

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    See if it works right without sitting in the chair.
    If it does work, my guess is the motor driver can not produce enough power to move the sim and is shutting down.

    Let us know how it goes,
    Dustin
    yobuddy, Jul 26, 2018
    #3
  4. MarkusB

    MarkusB Well-Known Member Gold Contributor

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    My Motion Simulator:
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    I support @noorbeast ‘s assumption that the motor angle is too large and causes a shutdown, probably inside the SMC3 software.
    The reaon for this assumption is that the motor continues moving after the angle has been reduced by hand. This happens several times in the video.

    But actually I am wondering that the motor moves at all with „Max Limits“ and „Clip Input“ both set to zero.
    @Schopfer: Have a look at the description of these parameters in this post: SMC3 Arduino 3DOF Motor Driver and Windows Utilities
    The following post gives a 25-step instruction for an initial configuration, during which you set both parameters to 255: SMC3-SPS Sabertooth Packet Serial PID motor driver w/SoftStart

    For reducing the max angle wirhin SimTools you can configure an „axis limit“. This can also help.
    • Agree Agree x 1
    MarkusB, Jul 26, 2018
    #4
  5. Schopfer

    Schopfer Member

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    My Motion Simulator:
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    In pit stop motor was shutdown two motor no movement before.
    On track ine motor was no more power to break and shutdown.
    I was change 2 MM. it’s same
    Schopfer, Jul 27, 2018
    #5
  6. Schopfer

    Schopfer Member

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    Motor work without sitting.
    Schopfer, Jul 27, 2018
    #6
  7. yobuddy

    yobuddy Well-Known Member Staff Member Moderator SimAxe Beta Tester SimTools Developer Gold Contributor

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    So you will need to figure out how to get more leverage with your motor setup.
    The why they are attached requires to much to move the sim when someone is in the chair, and causes shutdowns.

    You may consider attaching an arm from the motors to the top of the chair in order to get more leverage.
    Something like this buddy.
    P1010397.JPG
    Take care,
    yobuddy
    • Like Like x 1
    yobuddy, Jul 27, 2018
    #7
  8. Schopfer

    Schopfer Member

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    My Motion Simulator:
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    [/ATTACH] 2-02.jpg 2-04.jpg

    Attached Files:

    • 2-03.jpg
      2-03.jpg
      File size:
      564.9 KB
      Views:
      561
    Schopfer, Jul 28, 2018
    #8
  9. Schopfer

    Schopfer Member

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    My Motion Simulator:
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    I understand correctly?
    Motor has low power have 2 way for solve
    1. attch longer arm from motor
    2. replace to high power motor.
    [​IMG]
    Schopfer, Jul 28, 2018
    #9
  10. imajavaid

    imajavaid Member

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    My Motion Simulator:
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    How to reduce movement angle. How can you make sure that it is small than 40 degree
    imajavaid, Jul 1, 2022
    #10
  11. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    My Motion Simulator:
    3DOF, DC motor, JRK
    First ensure adequate rod length so that the lever is parallel to the seat at rest, with the rod at a 90 degree angle.

    In SMC3 the Clip Input and Max Limits are used to se the range and overshoot limits: https://www.xsimulator.net/communit...3dof-motor-driver-and-windows-utilities.4957/

    Clip Input Used to create a band at either limit of the target range beyond which any values sent to the SMC3 are clipped. In addition to this clipping, if the motor feedback does move beyond this range (typically through inertia), the SMC3 will attempt to brake the motors hard by driving them in reverse until they are back out of this limit zone. The value can be anything from 0-255 (however can’t be less than the current limit setting). Reverse braking is applied in the band between the Clip Input and the Max Limit settings. Reverse braking can be disabled - refer to PWMrev.

    Max Limits Used to create a band at either limit of the feedback range beyond which if the motors move (typically through inertia) the SMC3 will automatically shutdown the drivers and keep them disabled until reset. This is essentially a safety mechanism if something goes wrong. The value can be between 0-255 (however can’t be greater than the current clip setting).

    [​IMG]
    noorbeast, Jul 1, 2022
    #11