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Wiper Motor Deadzone

Discussion in 'Motor actuators and drivers' started by GoFast124, Dec 1, 2009.

  1. GoFast124

    GoFast124 New Member

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    I seem to have a deadzone in the middle of the motor motion. Is this normal? The motor doesn't move unless the power output is above about 50%. I am wondering if the Ocean controls speed controller is not right. Its the Dual Bi Directional Speed controller.
    thanks
    David K
    GoFast124, Dec 1, 2009
    #1
  2. Frakk

    Frakk Active Member

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    Are you using the motors under load? It requires quiet a lot of power to get a motor to move compared to keep it moving.
    Just try a PC fan with a variable voltage supply or a pwm signal. You will see that the fan will start rotating at 30%, but once it is moving, you can go all the way down to 5%.

    Describe your problem in a little more detail and we'll see where it goes. :)
    Frakk, Dec 5, 2009
    #2
  3. GoFast124

    GoFast124 New Member

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    Hi, I think I have worked it out. I had to use the PID proportional and derivative values in the Axis settings to get the motion to go straight to 80% then go slowly to 100%. I wasn't visualising the graph of the functions to understand how it would affect the motion. So now I just need to get the pot to stop the motor faster OR I think I probably need a smaller gear on the motor so the motor can move lots but the seat moves a little.
    thanks
    David K

    Here is a picture of my machine so far:
    [​IMG]
    GoFast124, Dec 5, 2009
    #3