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1 ## Copyright (C) 1996, 1998, 2000, 2002, 2004, 2005, 2007 |
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2 ## Auburn University. All rights reserved. |
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3 ## |
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4 ## This file is part of Octave. |
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5 ## |
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6 ## Octave is free software; you can redistribute it and/or modify it |
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7 ## under the terms of the GNU General Public License as published by |
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8 ## the Free Software Foundation; either version 3 of the License, or (at |
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9 ## your option) any later version. |
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10 ## |
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11 ## Octave is distributed in the hope that it will be useful, but |
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12 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 ## General Public License for more details. |
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15 ## |
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16 ## You should have received a copy of the GNU General Public License |
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17 ## along with Octave; see the file COPYING. If not, see |
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18 ## <http://www.gnu.org/licenses/>. |
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19 |
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20 ## -*- texinfo -*- |
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21 ## @deftypefn {Function File} {} tf2sys (@var{num}, @var{den}, @var{tsam}, @var{inname}, @var{outname}) |
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22 ## Build system data structure from transfer function format data. |
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23 ## |
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24 ## @strong{Inputs} |
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25 ## @table @var |
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26 ## @item num |
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27 ## @itemx den |
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28 ## Coefficients of numerator/denominator polynomials. |
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29 ## @item tsam |
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30 ## Sampling interval; default: 0 (continuous time). |
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31 ## @item inname |
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32 ## @itemx outname |
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33 ## Input/output signal names; may be a string or cell array with a single string |
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34 ## entry. |
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35 ## @end table |
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36 ## |
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37 ## @strong{Output} |
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38 ## @table @var |
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39 ## @item sys |
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40 ## System data structure. |
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41 ## @end table |
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42 ## |
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43 ## @strong{Example} |
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44 ## @example |
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45 ## octave:1> sys=tf2sys([2 1],[1 2 1],0.1); |
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46 ## octave:2> sysout(sys) |
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47 ## Input(s) |
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48 ## 1: u_1 |
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49 ## Output(s): |
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50 ## 1: y_1 (discrete) |
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51 ## Sampling interval: 0.1 |
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52 ## transfer function form: |
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53 ## 2*z^1 + 1 |
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54 ## ----------------- |
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55 ## 1*z^2 + 2*z^1 + 1 |
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56 ## @end example |
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57 ## @end deftypefn |
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58 |
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59 ## Author: R. Bruce Tenison <btenison@eng.auburn.edu> |
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60 ## Created: July 29, 1994 |
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61 ## Name changed to TF2SYS July 1995 |
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62 ## updated for new system data structure format July 1996 |
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63 ## name changed to tf Feb 2004 |
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64 |
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65 function outsys = tf2sys (varargin) |
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66 |
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67 warning ("tf2sys is deprecated. Use tf instead."); |
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68 outsys = tf (varargin{:}); |
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69 |
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70 endfunction |
