Nyquist Diagram in Linear Control System

  1. I have so much problem in draw nyquist diagram. here is some problem

    1-as the book mentioned the open- transfer function doesn't have any pole and zero in right of S plane. and give me the uncompleted diagram
    [​IMG]
    so i completed it as you see , but my answer is different form the book !!!! what is my wrong?
    [​IMG]


    and other question:
    2-here is uncompleted diagrams
    [​IMG]
    i completed and solved with this view
    [​IMG]
    but one of the answers is wrong .... now what is my problem?!!!!

    how can i find the best videos references about nyquist in Linear Control System ?

    Thanks
     
  2. jcsd
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