giving state-space equation from transfer function G(s)
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we have transfer function G(s) as follow :
i want to give state-space equation from G(s). i search about it and found that is ss order that do it, and i writem-file as follow , but matlab say :"Empty state-space model"
H = [tf([2],[1 4 1])];
ss(H);
ss(1);
ss(2);
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Thomas
2012-6-13
>> H = [tf([2],[1 4 1])]
H =
2
-------------
s^2 + 4 s + 1
Continuous-time transfer function.
>> ss(H)
ans =
a =
x1 x2
x1 -4 -1
x2 1 0
b =
u1
x1 2
x2 0
c =
x1 x2
y1 0 1
d =
u1
y1 0
Continuous-time state-space model.
>> ss(1)
ans =
d =
u1
y1 1
Static gain.
>> ss(2)
ans =
d =
u1
y1 2
Static gain.
where are you getting the error? What version of Matlab are you on?
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