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Homework Help: Write function for control system block

  1. Jul 27, 2014 #1
    1. The problem statement, all variables and given/known data
    Write function for control system block

    2. Relevant equations

    3. The attempt at a solution
    4 and D are parallel so we add them :

    I am stucking in the simplication of this block

    Should I group these elements to a function called w[nT], so

    and by my reduction w[nT]=2(4+D), is it correct ?
  2. jcsd
  3. Jul 28, 2014 #2


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    Staff: Mentor

    In going from the diagram in (1) to that in (3) you replaced the 3 symbols by 1, so that summing symbol should have disappeared, too. Then simplify a block D+4 followed by a 2 into one of 2(D+4).
  4. Jul 28, 2014 #3

    rude man

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    Homework Helper
    Gold Member

    Doesn't "D" stand for delay? So put in the delay. D is not some constant. Unless I miss my guess.
  5. Jul 28, 2014 #4


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    Staff: Mentor

    Sampled data .... I missed that.
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