ch3_4.m

《MATLAB7.0控制系统应用实例》 作者：刘叔军

num=[1 5];
den=conv([1 3 2],[1 2 5 0 ]);
G=tf(num,den);
nichols(G);
grid
figure
bode(G);
grid
figure
nyquist(G);
grid
figure
Gc=feedback(G,1);
step(Gc);
grid