copfac

copfac — right coprime factorization

Calling sequence

[N,M,XT,YT]=copfac(G [,polf,polc,tol])

`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

[N,M,XT,YT]=copfac(G,[polf,polc,[tol]]) returns a right coprime factorization 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.