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.