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Highlights from
Feedback Control of Dynamic Systems, 6th Edition, Prentice-Hall, 2010

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Feedback Control of Dynamic Systems, 6th Edition, Prentice-Hall, 2010

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MATLAB and Simulink files for the book, Feedback Control of Dynamic Systems, 6th Edition, 2010

fig6_23.m
% Fig. 6.23   Feedback Control of Dynamic Systems, 6e 
%             Franklin, Powell, Emami
%

clear all;
%close all;
clf

num=1;
den=[1 2 1];
w=logspace(-2,3,100);
[re,im]=nyquist(num,den,w);

plot(re,im,re,-im);
axis equal
xlabel('Re(G(s))');
ylabel('Im(G(s))');
title('Fig. 6.23 Nyquist plot');
nicegrid;

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