init

FOTF Toolbox/@foss/coss_aug.m

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+function G1=coss_aug(G,k)
+% coss_aug - state augmentation of an FOSS object
+%
+%    G1=coss_aug(G,k)
+%
+%   G - the FOSS object
+%   k - integer so that original n states can be augmented into n*k states
+%   G1 - the augmented FOSS model
+
+% Copyright (c) Dingyu Xue, Northeastern University, China
+% Last modified 28 March, 2017 
+% Last modified 18 May, 2022 
+   if G.alpha==0 || k==1, G1=G;
+   else, alpha=G.alpha/k; G=fotf(G); [n,m]=size(G);
+      for i=1:n, for j=1:m, g=G(i,j); 
+         a=g.den.a; na=g.den.na; b=g.num.a; nb=g.num.na;
+         ii=1:k:k*length(a); a1(ii)=a;
+         ii=1:k:k*length(b); b1(ii)=b; G2(i,j)=tf(b1,a1);
+      end, end
+      G1=foss(ss(G2)); G1.alpha=alpha;
+end, end