fig5_30a.m

包含了控制理论的各种仿真程序

% Fig. 5.30a  Feedback Control of Dynamic Systems, 4e 
%             Franklin, Powell, Emami
%script for Figure 5.30a
n=[1 5.4]; 
d=conv([1 1 0],[1 20]);
nc=127*[1 .03];
dc=[1 .01];
nol=conv([0 0 n],nc);
dol=conv(d,dc);
 rlocus(nol,dol); 
 title('Fig.5.30a Root locus for lead plus lag')
 axis([-20 4 -9 9])
 z=0:.1:.9;
 wn=2:2:19;
 sgrid(z, wn)
 hold off