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

   1 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   2
   3  Header:       FGSummer.h
   4  Author:
   5  Date started:
   6
   7  ------------- Copyright (C)  -------------
   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 FGSUMMER_H
  34 #define FGSUMMER_H
  35
  36 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  37 INCLUDES
  38 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  39
  40 #ifdef FGFS
  41 #  include <simgear/compiler.h>
  42 #  ifdef SG_HAVE_STD_INCLUDES
  43 #    include <vector>
  44 #  else
  45 #    include <vector.h>
  46 #  endif
  47 #else
  48 #  include <vector>
  49 #endif
  50
  51 #include <string>
  52 #include "FGFCSComponent.h"
  53 #include <input_output/FGXMLElement.h>
  54
  55 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  56 DEFINITIONS
  57 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  58
  59 #define ID_SUMMER "$Id$"
  60
  61 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  62 FORWARD DECLARATIONS
  63 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  64
  65 namespace JSBSim {
  66
  67 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  68 CLASS DOCUMENTATION
  69 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
  70
  71 /** Models a flight control system summing component.
  72     The Summer component sums two or more inputs. These can be pilot control
  73     inputs or state variables, and a bias can also be added in using the BIAS
  74     keyword.  The form of the summer component specification is:
  75 <pre>
  76     \<COMPONENT NAME="name" TYPE="SUMMER">
  77       INPUT \<property>
  78       INPUT \<property>
  79       [BIAS \<value>]
  80       [?]
  81       [CLIPTO \<min> \<max> 1]
  82       [OUTPUT \<property>]
  83     \</COMPONENT>
  84 </pre>
  85     Note that in the case of an input property the property name may be
  86     immediately preceded by a minus sign. Here's an example of a summer
  87     component specification:
  88 <pre>
  89     \<COMPONENT NAME="Roll A/P Error summer" TYPE="SUMMER">
  90       INPUT  velocities/p-rad_sec
  91       INPUT -fcs/roll-ap-wing-leveler
  92       INPUT  fcs/roll-ap-error-integrator
  93       CLIPTO -1 1
  94     \</COMPONENT>
  95 </pre>
  96     Note that there can be only one BIAS statement per component.
  97
  98     @author Jon S. Berndt
  99     @version $Id$
 100 */
 101
 102 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 103 CLASS DECLARATION
 104 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 105
 106 class FGSummer  : public FGFCSComponent
 107 {
 108 public:
 109   /** Constructor.
 110       @param fcs a pointer to the parent FGFCS object.
 111       @param AC_cfg a pointer to the configuration file object. */
 112   FGSummer(FGFCS* fcs, Element* element);
 113   /// Destructor
 114   ~FGSummer();
 115
 116   /// The execution method for this FCS component.
 117   bool Run(void);
 118
 119 private:
 120   double Bias;
 121   void Debug(int from);
 122 };
 123 }
 124 #endif