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ss2des.4
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1999-09-16
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ss2des(1) Scilab Function ss2des(1)
NAME
ss2des - (polynomial) state-space to descriptor form
CALLING SEQUENCE
[S]=ss2des(Sl)
PARAMETERS
Sl : syslin list: proper or improper linear system.
S : list
DESCRIPTION
Given the linear system in state-space representation Sl (syslin list),
with a D matrix which is either polynomial or constant, but not zero ss2des
returns a descriptor system as list('d',A,B,C,0,E) such that:
Sl=C*(s*E-A)^(-1)*B
Note that the (constant) "D matrix" of the descriptor system is zero but Sl
cannot be strictly proper.
SEE ALSO
pol2des, tf2des, des2ss
AUTHOR
F. D.