bstap(1)

NAME
bstap - hankel approximant

CALLING SEQUENCE
[Q]=bstap(Sl)

PARAMETERS

sl  : linear system (syslin list) assumed continuous-time and anti-stable.

Q   : best stable approximation of Sl (syslin list).

DESCRIPTION
Computes the best approximant Q of the linear system Sl
      ||Sl-Q||    =  ||T||
              inf
where ||T|| is the H-infinity norm of the Hankel operator associated with Sl.

SEE ALSO
syslin