hawk
your system is
xdot=A*x+B1*x+B2*u
y=C2*x+D11*w+D12*u
z=C1*x+D11*w+D12*u
when you apply A, B1, .. you get the following:
xdot=A*x+B2*u
y=C2*x+D21*u
z=C1*x
note that the 3rd equation is just telling that z is proportional to x. If you ignore z, build your SS model, with
xdot=A*x+B2*u
y=C2*x+D21*u
and then calculate z out of x with z=C1*x.
Rewording, include z inside x, or as mentioned, ignore the 3rd equation, build the model, and calculate z afterwards.
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thanks in advance
John
