7.8.2.m

周克敏 鲁棒控制基础 （essential of robust control ） 部分习题

T2=tf(conv(conv(conv(conv([-0.05,1],[-0.05,1]),conv([-0.05,1],[-0.05,1])),conv(conv([-0.05,1],[-0.05,1]),conv([-0.05,1],[-0.05,1]))),conv([-0.05,1],[-0.05,1])),conv(conv(conv(conv(conv([0.05,1],[0.05,1]),conv([0.05,1],[0.05,1])),conv(conv([0.05,1],[0.05,1]),conv([0.05,1],[0.05,1]))),conv([0.05,1],[0.05,1])),[0.01,1]));
M2=ss(T2);
[Ab2,Bb2,Cb2,sig2,Tinv2]=balreal(M2.a,M2.b,M2.c);
sig2