ex3_9.m

反馈控制系统分析与设计,虽然有点抽象

G=tf(5*conv([1,-1],[1,2]),[1,4,3,4]);
Gc=tf([1,3,4],conv([1,-1],[1,3,2])); H=1;
G_a=minreal(feedback(Gc*G,H));
roots(G_a.den{1})

[V,cc]=intstab(G,Gc,H)

step(G_a); figure
G_b=feedback(Gc,G*H); step(G_b)