Hi Mohamed,
Not sure if this answers your question, but ...
The state space matrices shown in the output after using delayss at the command line are exactly what the output says they are: the state space matrices of the model assuming the delays are set to zero. But the output also tells you what the delays actually are in the model. And we can see that the delays do affect the output.
DelayT(1) = struct('delay',0.5,'a',0,'b',2,'c',1,'d',0);
DelayT(2) = struct('delay',1.2,'a',-1,'b',0,'c',0,'d',0);
sys = delayss(-1,1,1,0,DelayT)
sysnodelay = ss(-1,1,1,0)
step(sys,sysnodelay)
