m6_21.m

MATLAB控制系统仿真与实例详解（附书光盘）

%a
wn=1;zet=[0:0.1:1,2,3,5]; 
hold on 
for i=1:length(zet) 
num=wn^2;den=[1,2*zet(i)*wn,wn^2]; 
bode(num,den); 
end 
hold off 
%b
wn=[0.1:0.1:1]; zet=0.707; 
hold on 
for i=1:length(wn) 
num=wn(i)^2; den=[1,2*zet*wn(i),wn(i)^2]; 
bode(num,den); 
end 
hold off