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copfac(1) Scilab Function copfac(1)
NAME
copfac - right coprime factorization
CALLING SEQUENCE
[N,M,XT,YT]=copfac(G [,polf,polc,tol])
PARAMETERS
G : syslin list (continuous-time linear system )
polf, polc : respectively the poles of XT and YT and the poles of n and M
(default values =-1).
tol : real threshold for detecting stable poles (default value
100*%eps)
N,M,XT,YT : linear systems represented by syslin lists
DESCRIPTION
[N,M,XT,YT]=copfac(G,[polf,polc,[tol]]) returns a right coprime factoriza-
tion of G.
G = N*M^-1 where N and M are stable, proper and right coprime. (i.e. [N M]
left-invertible with stability)
XT and YT satisfy:
[XT -YT].[M N]' = eye (Bezout identity)
G is assumed stabilizable and detectable.
SEE ALSO
syslin, lcf
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