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Variable amplitude for shaker table

  1. Apr 17, 2013 #1
    Hi All,

    I built this shaker table: and I am now trying to change the amplitude so that it is no longer fixed but instead variable. The frequency I can change but the amplitude is fixed given this design.

    Does anyone have any suggestions on how to be able to change the amplitude so I can test for a range distances?

    thanks!
     
    Last edited by a moderator: Sep 25, 2014
  2. jcsd
  3. Apr 17, 2013 #2

    berkeman

    User Avatar

    Staff: Mentor

    Since the amplitude of the vibration is crudely controlled by the spinning mass, you need to either modulate the mass or the distance the mass is separated from the motor shaft.
     
    Last edited by a moderator: Sep 25, 2014
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