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- ## Copyright (C) 1997 Kai P. Mueller
- ##
- ## This file is part of Octave.
- ##
- ## Octave is free software; you can redistribute it and/or modify it
- ## under the terms of the GNU General Public License as published by the
- ## Free Software Foundation; either version 2, or (at your option) any
- ## later version.
- ##
- ## Octave is distributed in the hope that it will be useful, but WITHOUT
- ## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- ## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- ## for more details.
- ##
- ## You should have received a copy of the GNU General Public License
- ## along with Octave; see the file COPYING. If not, write to the Free
- ## Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.
-
- ## -*- texinfo -*-
- ## @deftypefn {Function File } { @var{outsys} =} ugain(n)
- ## Creates a system with unity gain, no states.
- ## This trivial system is sometimes needed to create arbitrary
- ## complex systems from simple systems with buildssic.
- ## Watch out if you are forming sampled systems since "ugain"
- ## does not contain a sampling period.
- ##
- ## See also: hinfdemo (MIMO H_infinty example, Boeing 707-321 aircraft model)
- ##
- ## @end deftypefn
-
- function outsys = ugain (n)
-
- ## Written by Kai P. Mueller April, 1998
- ## Updates
-
- if((nargin != 1) || (nargout > 1))
- usage("outsys = ugain(n)")
- endif
- outsys = ss2sys([],[],[],eye(n));
- endfunction
-