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Homework 4, due October 3

Posted: Wed Sep 26, 2007 2:42 pm
by goodwine
From the course text:
  1. P5.6
  2. P5.13
  3. P5.16
  4. AP5.3
  5. AP5.4
  6. DP5.4
  7. MP5.6

Problem 1

Posted: Fri Sep 28, 2007 3:44 pm
by bmertz
When problem 1 (P5.6) askes for the steady state error for this path, what does it mean by "steady state"? Is it asking for the value of the error at t=40, or the steady state error for each of the ramps, or something else? I just wasn't sure what it is wanting. Thanks.

Re: Problem 1

Posted: Fri Sep 28, 2007 3:52 pm
by goodwine
bmertz wrote:When problem 1 (P5.6) askes for the steady state error for this path, what does it mean by "steady state"? Is it asking for the value of the error at t=40, or the steady state error for each of the ramps, or something else? I just wasn't sure what it is wanting. Thanks.
I think just determining the steady state error to a ramp input will suffice. Since the input is periodic, there really isn't a steady state error.

Posted: Tue Oct 02, 2007 11:37 am
by Benson Mitchell
Steady-state behavior can be obtained for any periodic function, so we could do that by taking a F.S. of the input to get an F.S. of the error. That wouldn't be a single number, but you'd get a picture of the error that shows up at each reversal in the triangle wave.
(BTW, A sawtooth wave has a slope on one side and a discontinuity at the top, like:

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EEs would call this wave form a triangle wave:

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I would like to see Drs. Dorf and Bishop try sawing something with teeth like that!)