src/FDM/JSBSim/models/flight_control/FGDeadBand.h

   1 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   2
   3  Header:       FGDeadBand.h
   4  Author:       Jon Berndt
   5  Date started: 2001
   6
   7  ------------- Copyright (C) 2001 Jon S. Berndt -------------
   8
   9  This program is free software; you can redistribute it and/or modify it under
  10  the terms of the GNU Lesser General Public License as published by the Free Software
  11  Foundation; either version 2 of the License, or (at your option) any later
  12  version.
  13
  14  This program is distributed in the hope that it will be useful, but WITHOUT
  15  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  16  FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
  17  details.
  18
  19  You should have received a copy of the GNU Lesser General Public License along with
  20  this program; if not, write to the Free Software Foundation, Inc., 59 Temple
  21  Place - Suite 330, Boston, MA  02111-1307, USA.
  22
  23  Further information about the GNU Lesser General Public License can also be found on
  24  the world wide web at http://www.gnu.org.
  25
  26 HISTORY
  27 --------------------------------------------------------------------------------
  28
  29 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  30 SENTRY
  31 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  32
  33 #ifndef FGDEADBAND_H
  34 #define FGDEADBAND_H
  35
  36 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  37 INCLUDES
  38 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  39
  40 #include "FGFCSComponent.h"
  41
  42 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  43 DEFINITIONS
  44 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  45
  46 #define ID_DEADBAND "$Id: FGDeadBand.h,v 1.9 2009/10/24 22:59:30 jberndt Exp $"
  47
  48 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  49 FORWARD DECLARATIONS
  50 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  51
  52 namespace JSBSim {
  53
  54 class FGFCS;
  55 class Element;
  56 class FGPropertyManager;
  57
  58 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  59 CLASS DOCUMENTATION
  60 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  61
  62 /** Models a deadband object.
  63     This is a component that allows for some "play" in a control path, in the
  64     form of a dead zone, or deadband. The form of the deadband component
  65     specification is:
  66
  67     @code
  68     <deadband name="Windup Trigger">
  69       <input> [-]property </input>
  70       <width> number </width>
  71       [<clipto>
  72         <min> {[-]property name | value} </min>
  73         <max> {[-]property name | value} </max>
  74       </clipto>]
  75       [<output> {property} </output>]
  76     </deadband>
  77     @endcode
  78
  79     The width value is the total deadband region within which an input will
  80     produce no output. For example, say that the width value is 2.0. If the
  81     input is between -1.0 and +1.0, the output will be zero.
  82     @author Jon S. Berndt
  83     @version $Id: FGDeadBand.h,v 1.9 2009/10/24 22:59:30 jberndt Exp $
  84 */
  85
  86 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  87 CLASS DECLARATION
  88 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  89
  90 class FGDeadBand  : public FGFCSComponent
  91 {
  92 public:
  93   FGDeadBand(FGFCS* fcs, Element* element);
  94   ~FGDeadBand();
  95
  96   bool Run(void);
  97
  98 private:
  99   double width;
 100   double gain;
 101   FGPropertyManager* WidthPropertyNode;
 102   double WidthPropertySign;
 103
 104   void Debug(int from);
 105 };
 106 }
 107 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 108
 109 #endif