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Control of a pendulum

  1. Oct 17, 2015 #1
    1. The problem statement, all variables and given/known data
    Hi, I have a project involving an inverted pendulum, as attached.

    2. Relevant equations

    3. The attempt at a solution
    I don't really know about some things:

    First, is theta the only required input from the inverted pendulum system to Labview? Don't I also need the position of the cart that the pendulum will be mounted on?

    Secondly, from the component list, "Component 9 - a "Sharp IR Sensor plug and wire assembly" - Is this the sensor for theta?
    If the IR sensor is something like youtube.com/watch?v=PnJnbDfLr3M
    can it be used to measure theta?

    Attached Files:

  2. jcsd
  3. Oct 18, 2015 #2


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    Theta will let you calculate the relative position. That should be enough.

    I would use the potentiometer (component 7). I don't know how an IR sensor would be used.
  4. Oct 21, 2015 #3
    but isnt a potentiometer an adjustable resistor? how is it used to detect the angle?
  5. Oct 22, 2015 #4


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    Physically connect it to the pendulum so that the control is moved when the pendulum moves. Then the pendulum position is related to resistance.
  6. Oct 23, 2015 #5


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    Typically you adjust a potentiometer by rotating a knob. Rotating = changing angle.
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