MATLAB and Simulink files for the book, Feedback Control of Dynamic Systems, 6th Edition, 2010
% Fig. 5.26 Feedback Control of Dynamic Systems, 6e
% Franklin, Powell, Emami
% script for Figure 5.26, Lead design embellishment via RLTOOL.
dp=[1 1 0];
sysDG = tf(nol,dol);
% right click on the plot
% click "grid"
% click "design requirements", then "new"
% put in 7.5 rad/sec natural frequency
% put in 0.5 damping ratio
% move roots so that the specs above are met, and find that the gain is about 91.