chapter7_3.m

《MATLAB在控制系统中的应用》实例程序

KK=12;bp=0.2; ts=2.6; delta=0.05;a=2; 
ng0=[800];dg0=conv([1,0],conv([1,4],conv([1,10],[1,20]))); 
g0=tf(ng0,dg0); 
s=bpts2s(bp,ts,delta) 
[kosi,wn]=s2kw(s) 
kosi=0.5;wn=2.5; 
s=kw2s(kosi,wn) 
[ngc,dgc,k]=lag1(ng0,dg0,KK,s,a) 
gc=tf(ngc,dgc);zpk(gc),g0c=tf(KK*g0*gc); 
b1=feedback(k*g0,1);b2=feedback(g0c,1); 
step(b1,'r--'), hold on,step(b2),hold off 
axis([0,4,0,1.4]); 
[pos,tr,ts,tp]=stepchar(b2,delta)