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State Space Models (Power System)

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nick
nick 2012-5-22
Hello,
I am working on power system, and I want to represent my power system dynamics in state space form
Like, I have system equations
xdot = Ax + R + Bu and y = Cx
Where X is 7x1 matrix and R is basically function of R (X1, X2, X5, Z1, Z2, Z3)
I was able to get first 3 parameters of R matrix absorbed in A matrix but how can I now apply ss command in Matlab and go ahead as Z1, Z2 and Z3 are totally other state variables OR Control variable Sizes of Matrices Xdot = {7x1}; A = {7x7}; X ={7x1}; R = {7x1} B = {7x3}; u = {3x1} C= {3x7}
Thanks in Advance.

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回答（1 个）

Craig
Craig 2012-5-24
If I understand your question correctly Z1,Z2, Z3 are effectivly external inputs. This means you should be able to append them to U and absorb the contribution of R with respect to these inputs into the B matrix.
-craig

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