chapter9_3.m

《MATLAB在控制系统中的应用》实例程序

Num=400;
Den=[1 2 400];
G=tf(num,den);
nW1=100*conv([0.005,1],[0.005,1]);
dW1=conv([0.2,1],[0.2,1]);
nW3=[1,0,0];
dW3=[40000];
[m1,p1,w1]=bode(tf(nW1,dW1));
semilogx(w1,20*log10(m1(:)));
figure;
[m3,p3,w3]=bode(tf(nW3,dW3));
semilogx(w3,20*log10(m31(:)));
[a,b,c,d]=tf2ss(num,den);
S=mksys(a,b,c,d);
W1=[nW1;dW1];
W3=[nW3;0,0,dW3];
TSS=augtf(S,W1,[],W3);
[cF1,ccL]=hinf(TSS);