SS2ND:
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Converts from state space to numerator denominator form.
Creates a transfer function model of a state-space system from
one input channel to all of the output channels using
the relationship
det(sI-A+bc) - (1-d)det(sI-A)
c*inv(sI-A)*b + d = -----------------------------
det(sI-A)
where c is a row vector and b a column vector.
Since version 1.
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Form:
[num, den] = SS2ND( a, b, c, d, iu )
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Inputs
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a Plant matrix
b Input column vector
c Output row vector
d Feedthrough element
iu Input channel
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Outputs
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num Numerator polynomial(s) one output per row
den Denominator polynomial
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References: Kalaith, T., Linear System, Prentice-Hall, Englewood-Cliffs,
NJ, 1980.
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Children:
Common: Control/SizeABCD
Math: Linear/DelLZ
