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Plotting the Nyquist Diagram  Stuck 
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#1
Apr1812, 07:27 AM

P: 656

1. The problem statement, all variables and given/known data
http://gyazo.com/8187e80897fe361d555dbb9e5399366d Okay, quite stuck here. Spent a few hours with the notes and tried some websites, but I'm still not confident in plotting Nyquist Diagrams 2. Relevant equations N = ZP 3. The attempt at a solution Well, at w=0, gain is 2 and at w= ∞ gain = 0. We also have a pole at s=0.5 in the right half plane... so P=1, correct? As we have an unstable pole? As for the phase it goes from 0 to 90°. WHY is calculating the phase important, where is this show on the Nyquist plot!? Do I now have enough information to draw it? How would you go about drawing it? How do I know what values to the jaxis should take? How do I know if it's meant to loop around under the real axis and back up to (0,0) Many Thanks Thomas Answers: http://gyazo.com/da99d7751508263c497af7270010228f 


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