m6_22.m

MATLAB控制系统仿真与实例详解（附书光盘）

num=500*[0.0167 1];
den1=conv([1 0],[0.05 1]);
den2=conv([0.0025 1],[0.001 1]);
den=conv(den1,den2);
G=tf(num,den);
bode(G);
grid
margin(G)
[Gm,pm,Wg,Wp)=margin(G)
grid
[Gm,pm,Wg,Wp]=margin(G)