rowregul¶

removing poles and zeros at infinity

Calling Sequence¶

[Stmp,Ws]=rowregul(Sl,alfa,beta)

:Sl,Stmp syslin lists : :alfa,beta real numbers (new pole and zero positions) :

computes a postfilter Ws such that Stmp=Ws*Sl is proper and with full rank D matrix.

Poles at infinity of Sl are moved to alfa;

Zeros at infinity of Sl are moved to beta;

Sl is assumed to be a right invertible linear system ( syslin list) in state-space representation with possibly a polynomial D matrix.

This function is the dual of colregul (see function code).

s=%s;
w=[1/s,0;s/(s^3+2),2/s];
Sl=`tf2ss`_(w);
[Stmp,Ws]=rowregul(Sl,-1,-2);
Stmp('D')     // D matrix of Stmp
`clean`_(`ss2tf`_(Stmp))