m6_9_2.m

MATLAB控制系统仿真与实例详解（附书光盘）

wn=[0.1:0.1:1]; 
z=0.55;
t=0:0.1:12; 
hold on 
for i=1:length(wn) 
Gc=tf(wn(i)^2,[1,2*z*wn(i),wn(i)^2]); 
step(Gc,t) 
end 
hold off
title('阶跃响应曲线');
grid