1 ## Copyright (C) 1994, 1996, 2000, 2002, 2003, 2004, 2005, 2007 Auburn University
2 ## Copyright (C) 2012 Lukas F. Reichlin <lukas.reichlin@gmail.com>
4 ## This program is free software; you can redistribute it and/or modify it under
5 ## the terms of the GNU General Public License as published by the Free Software
6 ## Foundation; either version 3 of the License, or (at your option) any later
9 ## This program is distributed in the hope that it will be useful, but WITHOUT
10 ## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 ## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
14 ## You should have received a copy of the GNU General Public License along with
15 ## this program; if not, see <http://www.gnu.org/licenses/>.
18 ## @deftypefn {Function File} {[@var{a}, @var{b}, @var{c}, @var{d}] =} zp2ss (@var{zer}, @var{pol}, @var{k})
19 ## Conversion from zero / pole to state space.
25 ## Vectors of (possibly) complex poles and zeros of a transfer
26 ## function. Complex values must come in conjugate pairs
27 ## (i.e., @math{x+jy} in @var{zer} means that @math{x-jy} is also in @var{zer}).
29 ## Real scalar (leading coefficient).
38 ## The state space system, in the form:
41 ## $$ \dot x = Ax + Bu $$
57 function [a, b, c, d, e] = zp2ss (varargin)
63 [a, b, c, d, e] = dssdata (zpk (varargin{:}), []);