Position feedback

Discussion in 'The Projects Forum' started by ssngu, Aug 4, 2008.

  1. ssngu

    Thread Starter New Member

    Aug 4, 2008
    2
    0
    [​IMG][​IMG][​IMG]I have attached a diagram for your reference. The flexible arm will be floating in water. So I need some sort of position feedback sensor or algorithm to detect the position with reference to the fixed axis of the flexible arm. Any suggestions?
     
  2. scubasteve_911

    Senior Member

    Dec 27, 2007
    1,202
    1
    Maybe a rotary optical encoder? Absolute measurement type with grey code might be a good way to do it.

    Steve
     
  3. ssngu

    Thread Starter New Member

    Aug 4, 2008
    2
    0
    thank you. any other method or is there anyway that the position can be calculated manually?
     
  4. scubasteve_911

    Senior Member

    Dec 27, 2007
    1,202
    1
    You can use the arm to pull a cable, which is moves some indicator up and down a scale. You can also use a potentiometer, either linear or rotary for this. There are a lot of ways, there is no best method unless you clearly state your performance requirements.

    Steve
     
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