%Model (1.76)
%  G(s)=200/(10s+1)(0.005s+1)^2
% Gd(s)=100/(10s+1)
gd = nd2sys(1,[10 1],100);
g1 = nd2sys(1,[10 1],200); 
g2 = nd2sys(1,[0.05 1]); 
g = mmult(g1,g2,g2);

