7.8.1.m

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

T1=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([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])));
M1=ss(T1);
[Ab1,Bb1,Cb1,sig1,Tinv1]=balreal(M1.a,M1.b,M1.c);
sig1