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projsl.4
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1999-09-16
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projsl(1) Scilab Function projsl(1)
NAME
projsl - linear system projection
CALLING SEQUENCE
[slp]=projsl(sl,Q,M)
PARAMETERS
sl,slp : syslin lists
Q,M : matrices (projection factorization)
DESCRIPTION
slp= projected model of sl where Q*M is the full rank factorization of the
projection.
If (A,B,C,D) is the representation of sl, the projected model is given by
(M*A*Q,M*B,C*Q,D).
Usually, the projection Q*M is obtained as the spectral projection of an
appropriate auxiliary matrix W e.g. W = product of (weighted) gramians or
product of Riccati equations.
SEE ALSO
pbig
AUTHOR
F. D.