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Highlights from
Feedback Control of Dynamic Systems, 4th Ed., G. F. Franklin, J. D. Powell, A. Emami-Naeini

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Feedback Control of Dynamic Systems, 4th Ed., G. F. Franklin, J. D. Powell, A. Emami-Naeini

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25 Apr 2003 (Updated )

.m and .mdl files for Feedback Control of Dynamic Systems

fig6_36.m
% Fig. 6.36   Feedback Control of Dynamic Systems, 4e 
%             Franklin, Powell, Emami
%

clear all;
close all;

pm=0*ones(1,91);
i=0;
for z=.1:.01:1;
pm1=atan(2*z/(sqrt( sqrt(1+4*z^(4))-2*z*z) ));
i=i+1;
pm(1,i)=pm1;
end;
zeta=.1:.01:1;
plot(pm*180/pi,zeta,100*zeta(1:71),zeta(1:71));
grid;
xlabel('Phase margin (Deg)');
ylabel('Damping ratio, \zeta');
title('Fig.6.36 Damping ratio versus phase margin (PM)');

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