]> git.mxchange.org Git - flightgear.git/blobdiff - src/FDM/JSBSim/FGFCS.cpp
Updated to match changes in radiostack.[ch]xx
[flightgear.git] / src / FDM / JSBSim / FGFCS.cpp
index 21bb6b232c83215c52f7e968873c305d36471ba1..57e73bf8c0aa7411a16eb6ac214f9361351e4518 100644 (file)
@@ -47,6 +47,7 @@ INCLUDES
 #include "FGPosition.h"
 #include "FGAuxiliary.h"
 #include "FGOutput.h"
+#include "FGPropertyManager.h"
 
 #include "filtersjb/FGFilter.h"
 #include "filtersjb/FGDeadBand.h"
@@ -54,25 +55,38 @@ INCLUDES
 #include "filtersjb/FGGradient.h"
 #include "filtersjb/FGSwitch.h"
 #include "filtersjb/FGSummer.h"
-#include "filtersjb/FGFlaps.h"
+#include "filtersjb/FGKinemat.h"
 
 static const char *IdSrc = "$Id$";
-static const char *IdHdr = "ID_FCS";
+static const char *IdHdr = ID_FCS;
 
-extern short debug_lvl;
+#if defined(WIN32) && !defined(__CYGWIN__)
+#define snprintf _snprintf
+#endif
 
 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 CLASS IMPLEMENTATION
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
-FGFCS::FGFCS(FGFDMExec* fdmex) : FGModel(fdmex) {
+FGFCS::FGFCS(FGFDMExec* fdmex) : FGModel(fdmex)
+{
+  int i;
   Name = "FGFCS";
 
-  DaCmd = DeCmd = DrCmd = DfCmd = DsbCmd = DspCmd = PTrimCmd = 0.0;
-  DaPos = DePos = DrPos = DfPos = DsbPos = DspPos = 0.0;
+  DaCmd = DeCmd = DrCmd = DfCmd = DsbCmd = DspCmd = 0.0;
+  PTrimCmd = YTrimCmd = RTrimCmd = 0.0;
+  GearCmd = GearPos = 1; // default to gear down
   LeftBrake = RightBrake = CenterBrake = 0.0;
-
-  if (debug_lvl & 2) cout << "Instantiated: " << Name << endl;
+  DoNormalize=true;
+  
+  bind();
+  for (i=0;i<=NForms;i++) {
+    DePos[i] = DaLPos[i] = DaRPos[i] = DrPos[i] = 0.0;
+    DfPos[i] = DsbPos[i] = DspPos[i] = 0.0;
+  }
+    
+  for (i=0;i<NNorm;i++) { ToNormalize[i]=-1;}
+  Debug(0);
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -81,18 +95,31 @@ FGFCS::~FGFCS()
 {
   ThrottleCmd.clear();
   ThrottlePos.clear();
+  MixtureCmd.clear();
+  MixturePos.clear();
+  PropAdvanceCmd.clear();
+  PropAdvance.clear();
+
+  unsigned int i;
+  
+  unbind();
 
-  for(unsigned int i=0;i<Components.size();i++) delete Components[i];
-  if (debug_lvl & 2) cout << "Destroyed:    FGFCS" << endl;
+  for (i=0;i<Components.size();i++) delete Components[i];
+  Debug(1);
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 bool FGFCS::Run(void)
 {
+  unsigned int i;
+
   if (!FGModel::Run()) {
-    for (unsigned int i=0; i<ThrottlePos.size(); i++) ThrottlePos[i] = ThrottleCmd[i];
-    for (unsigned int i=0; i<Components.size(); i++)  Components[i]->Run();
+    for (i=0; i<ThrottlePos.size(); i++) ThrottlePos[i] = ThrottleCmd[i];
+    for (i=0; i<MixturePos.size(); i++) MixturePos[i] = MixtureCmd[i];
+    for (i=0; i<PropAdvance.size(); i++) PropAdvance[i] = PropAdvanceCmd[i];
+    for (i=0; i<Components.size(); i++)  Components[i]->Run();
+    if (DoNormalize) Normalize();
   } else {
   }
 
@@ -101,36 +128,158 @@ bool FGFCS::Run(void)
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-void FGFCS::SetThrottleCmd(int engineNum, float setting) {
-  if (engineNum < 0) {
-    for (unsigned int ctr=0;ctr<ThrottleCmd.size();ctr++) ThrottleCmd[ctr] = setting;
+void FGFCS::SetThrottleCmd(int engineNum, double setting)
+{
+  unsigned int ctr;
+
+  if (engineNum < (int)ThrottlePos.size()) {
+    if (engineNum < 0) {
+      for (ctr=0;ctr<ThrottleCmd.size();ctr++) ThrottleCmd[ctr] = setting;
+    } else {
+      ThrottleCmd[engineNum] = setting;
+    }
   } else {
-    ThrottleCmd[engineNum] = setting;
+    cerr << "Throttle " << engineNum << " does not exist! " << ThrottleCmd.size()
+         << " engines exist, but attempted throttle command is for engine "
+         << engineNum << endl;
   }
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-void FGFCS::SetThrottlePos(int engineNum, float setting) {
-  if (engineNum < 0) {
-    for (unsigned int ctr=0;ctr<=ThrottleCmd.size();ctr++) ThrottlePos[ctr] = ThrottleCmd[ctr];
+void FGFCS::SetThrottlePos(int engineNum, double setting)
+{
+  unsigned int ctr;
+
+  if (engineNum < (int)ThrottlePos.size()) {
+    if (engineNum < 0) {
+      for (ctr=0;ctr<ThrottlePos.size();ctr++) ThrottlePos[ctr] = setting;
+    } else {
+      ThrottlePos[engineNum] = setting;
+    }
   } else {
-    ThrottlePos[engineNum] = setting;
+    cerr << "Throttle " << engineNum << " does not exist! " << ThrottlePos.size()
+         << " engines exist, but attempted throttle position setting is for engine "
+         << engineNum << endl;
   }
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-bool FGFCS::LoadFCS(FGConfigFile* AC_cfg) {
-  string token;
+double FGFCS::GetThrottleCmd(int engineNum) const
+{
+  if (engineNum < (int)ThrottlePos.size()) {
+    if (engineNum < 0) {
+       cerr << "Cannot get throttle value for ALL engines" << endl;
+    } else {
+      return ThrottleCmd[engineNum];
+    }
+  } else {
+    cerr << "Throttle " << engineNum << " does not exist! " << ThrottleCmd.size()
+         << " engines exist, but throttle setting for engine " << engineNum
+         << " is selected" << endl;
+  }
+  return 0.0;
+}
+
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+double FGFCS::GetThrottlePos(int engineNum) const
+{
+  if (engineNum < (int)ThrottlePos.size()) {
+    if (engineNum < 0) {
+       cerr << "Cannot get throttle value for ALL engines" << endl;
+    } else {
+      return ThrottlePos[engineNum];
+    }
+  } else {
+    cerr << "Throttle " << engineNum << " does not exist! " << ThrottlePos.size()
+         << " engines exist, but attempted throttle position setting is for engine "
+         << engineNum << endl;
+  }
+  return 0.0; 
+}
+
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+void FGFCS::SetMixtureCmd(int engineNum, double setting)
+{
+  unsigned int ctr;
+
+  if (engineNum < (int)ThrottlePos.size()) {
+    if (engineNum < 0) {
+      for (ctr=0;ctr<MixtureCmd.size();ctr++) MixtureCmd[ctr] = setting;
+    } else {
+      MixtureCmd[engineNum] = setting;
+    }
+  }
+}
+
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+void FGFCS::SetMixturePos(int engineNum, double setting)
+{
+  unsigned int ctr;
+
+  if (engineNum < (int)ThrottlePos.size()) {
+    if (engineNum < 0) {
+      for (ctr=0;ctr<=MixtureCmd.size();ctr++) MixturePos[ctr] = MixtureCmd[ctr];
+    } else {
+      MixturePos[engineNum] = setting;
+    }
+  }
+}
+
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+void FGFCS::SetPropAdvanceCmd(int engineNum, double setting)
+{
+  unsigned int ctr;
+
+  if (engineNum < (int)ThrottlePos.size()) {
+    if (engineNum < 0) {
+      for (ctr=0;ctr<PropAdvanceCmd.size();ctr++) PropAdvanceCmd[ctr] = setting;
+    } else {
+      PropAdvanceCmd[engineNum] = setting;
+    }
+  }
+}
+
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+void FGFCS::SetPropAdvance(int engineNum, double setting)
+{
+  unsigned int ctr;
+
+  if (engineNum < (int)ThrottlePos.size()) {
+    if (engineNum < 0) {
+      for (ctr=0;ctr<=PropAdvanceCmd.size();ctr++) PropAdvance[ctr] = PropAdvanceCmd[ctr];
+    } else {
+      PropAdvance[engineNum] = setting;
+    }
+  }
+}
 
-  FCSName = AC_cfg->GetValue("NAME");
-  cout << "    Control System Name: " << FCSName << endl;
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+bool FGFCS::Load(FGConfigFile* AC_cfg)
+{
+  string token;
+  unsigned i;
+  
+  Name = Name + ":" + AC_cfg->GetValue("NAME");
+  if (debug_lvl > 0) cout << "    Control System Name: " << Name << endl;
+  if ( AC_cfg->GetValue("NORMALIZE") == "FALSE") {
+      DoNormalize=false;
+      cout << "    Automatic Control Surface Normalization Disabled" << endl;
+  }    
   AC_cfg->GetNextConfigLine();
-  while ((token = AC_cfg->GetValue()) != "/FLIGHT_CONTROL") {
+  while ((token = AC_cfg->GetValue()) != string("/FLIGHT_CONTROL")) {
     if (token == "COMPONENT") {
       token = AC_cfg->GetValue("TYPE");
-      cout << "    Loading Component \"" << AC_cfg->GetValue("NAME") << "\" of type: " << token << endl;
+      if (debug_lvl > 0) cout << endl << "    Loading Component \""
+                              << AC_cfg->GetValue("NAME")
+                              << "\" of type: " << token << endl;
       if ((token == "LAG_FILTER") ||
           (token == "LEAD_LAG_FILTER") ||
           (token == "SECOND_ORDER_FILTER") ||
@@ -151,8 +300,8 @@ bool FGFCS::LoadFCS(FGConfigFile* AC_cfg) {
         Components.push_back(new FGGradient(this, AC_cfg));
       } else if (token == "SWITCH") {
         Components.push_back(new FGSwitch(this, AC_cfg));
-      } else if (token == "FLAPS") {
-        Components.push_back(new FGFlaps(this, AC_cfg));
+      } else if (token == "KINEMAT") {
+        Components.push_back(new FGKinemat(this, AC_cfg));
       } else {
         cerr << "Unknown token [" << token << "] in FCS portion of config file" << endl;
         return false;
@@ -160,12 +309,41 @@ bool FGFCS::LoadFCS(FGConfigFile* AC_cfg) {
       AC_cfg->GetNextConfigLine();
     }
   }
+  //collect information for normalizing control surfaces
+  string nodeName;
+  for (i=0;i<Components.size();i++) {
+    
+    if ( (Components[i]->GetType() == "AEROSURFACE_SCALE" 
+          || Components[i]->GetType() == "KINEMAT")  
+                    && Components[i]->GetOutputNode() ) { 
+      nodeName= Components[i]->GetOutputNode()->GetName();  
+      if ( nodeName == "elevator-pos-rad" ) {
+        ToNormalize[iDe]=i;
+      } else if ( nodeName  == "left-aileron-pos-rad" 
+                   || nodeName == "aileron-pos-rad" ) {
+        ToNormalize[iDaL]=i;
+      } else if ( nodeName == "right-aileron-pos-rad" ) {
+        ToNormalize[iDaR]=i;
+      } else if ( nodeName == "rudder-pos-rad" ) {
+        ToNormalize[iDr]=i;
+      } else if ( nodeName == "speedbrake-pos-rad" ) {
+        ToNormalize[iDsb]=i;
+      } else if ( nodeName == "spoiler-pos-rad" ) {
+        ToNormalize[iDsp]=i;
+      } else if ( nodeName == "flap-pos-deg" ) {
+        ToNormalize[iDf]=i;
+      }
+    }
+  }     
+  
+  bindModel();
+  
   return true;
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-float FGFCS::GetComponentOutput(eParam idx) {
+double FGFCS::GetComponentOutput(int idx) {
   return Components[idx]->GetOutput();
 }
 
@@ -177,7 +355,8 @@ string FGFCS::GetComponentName(int idx) {
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-float FGFCS::GetBrake(FGLGear::BrakeGroup bg) {
+double FGFCS::GetBrake(FGLGear::BrakeGroup bg)
+{
   switch (bg) {
   case FGLGear::bgLeft:
     return LeftBrake;
@@ -193,11 +372,13 @@ float FGFCS::GetBrake(FGLGear::BrakeGroup bg) {
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-string FGFCS::GetComponentStrings(void){
+string FGFCS::GetComponentStrings(void)
+{
+  unsigned int comp;
   string CompStrings = "";
   bool firstime = true;
 
-  for (unsigned int comp = 0; comp < Components.size(); comp++) {
+  for (comp = 0; comp < Components.size(); comp++) {
     if (firstime) firstime = false;
     else          CompStrings += ", ";
 
@@ -211,11 +392,12 @@ string FGFCS::GetComponentStrings(void){
 
 string FGFCS::GetComponentValues(void)
 {
+  unsigned int comp;
   string CompValues = "";
   char buffer[10];
   bool firstime = true;
 
-  for (unsigned int comp = 0; comp < Components.size(); comp++) {
+  for (comp = 0; comp < Components.size(); comp++) {
     if (firstime) firstime = false;
     else          CompValues += ", ";
 
@@ -232,12 +414,321 @@ void FGFCS::AddThrottle(void)
 {
   ThrottleCmd.push_back(0.0);
   ThrottlePos.push_back(0.0);
+  MixtureCmd.push_back(0.0);     // assume throttle and mixture are coupled
+  MixturePos.push_back(0.0);
+  PropAdvanceCmd.push_back(0.0); // assume throttle and prop pitch are coupled
+  PropAdvance.push_back(0.0);
 }
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-void FGFCS::Debug(void)
+void FGFCS::Normalize(void) {
+  
+  //not all of these are guaranteed to be defined for every model
+  //those that are have an index >=0 in the ToNormalize array
+  //ToNormalize is filled in Load()
+  
+  if ( ToNormalize[iDe] > -1 ) {
+    DePos[ofNorm] = Components[ToNormalize[iDe]]->GetOutputPct();
+  }
+  
+  if ( ToNormalize[iDaL] > -1 ) {
+    DaLPos[ofNorm] = Components[ToNormalize[iDaL]]->GetOutputPct();
+  }
+  
+  if ( ToNormalize[iDaR] > -1 ) {
+    DaRPos[ofNorm] = Components[ToNormalize[iDaR]]->GetOutputPct();
+  }
+
+  if ( ToNormalize[iDr] > -1 ) {
+    DrPos[ofNorm] = Components[ToNormalize[iDr]]->GetOutputPct();
+  }
+       
+  if ( ToNormalize[iDsb] > -1 ) { 
+    DsbPos[ofNorm] = Components[ToNormalize[iDsb]]->GetOutputPct();
+  }
+  
+  if ( ToNormalize[iDsp] > -1 ) {
+    DspPos[ofNorm] = Components[ToNormalize[iDsp]]->GetOutputPct();
+  }
+  
+  if ( ToNormalize[iDf] > -1 ) {
+    DfPos[ofNorm] = Components[ToNormalize[iDf]]->GetOutputPct();
+  }
+  
+  DePos[ofMag]  = fabs(DePos[ofRad]);
+  DaLPos[ofMag] = fabs(DaLPos[ofRad]);
+  DaRPos[ofMag] = fabs(DaRPos[ofRad]);
+  DrPos[ofMag]  = fabs(DrPos[ofRad]);
+  DsbPos[ofMag] = fabs(DsbPos[ofRad]);
+  DspPos[ofMag] = fabs(DspPos[ofRad]);
+  DfPos[ofMag]  = fabs(DfPos[ofRad]);
+   
+}  
+    
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+void FGFCS::bind(void)
 {
-    //TODO: Add your source code here
+  PropertyManager->Tie("fcs/aileron-cmd-norm", this,
+                       &FGFCS::GetDaCmd,
+                       &FGFCS::SetDaCmd,
+                       true);
+  PropertyManager->Tie("fcs/elevator-cmd-norm", this,
+                       &FGFCS::GetDeCmd,
+                       &FGFCS::SetDeCmd,
+                       true);
+  PropertyManager->Tie("fcs/rudder-cmd-norm", this,
+                       &FGFCS::GetDrCmd,
+                       &FGFCS::SetDrCmd,
+                       true);
+  PropertyManager->Tie("fcs/flap-cmd-norm", this,
+                       &FGFCS::GetDfCmd,
+                       &FGFCS::SetDfCmd,
+                       true);
+  PropertyManager->Tie("fcs/speedbrake-cmd-norm", this,
+                       &FGFCS::GetDsbCmd,
+                       &FGFCS::SetDsbCmd,
+                       true);
+  PropertyManager->Tie("fcs/spoiler-cmd-norm", this,
+                       &FGFCS::GetDspCmd,
+                       &FGFCS::SetDspCmd,
+                       true);
+  PropertyManager->Tie("fcs/pitch-trim-cmd-norm", this,
+                       &FGFCS::GetPitchTrimCmd,
+                       &FGFCS::SetPitchTrimCmd,
+                       true);
+  PropertyManager->Tie("fcs/roll-trim-cmd-norm", this,
+                       &FGFCS::GetYawTrimCmd,
+                       &FGFCS::SetYawTrimCmd,
+                       true);
+  PropertyManager->Tie("fcs/yaw-trim-cmd-norm", this,
+                       &FGFCS::GetRollTrimCmd,
+                       &FGFCS::SetRollTrimCmd,
+                       true);
+  PropertyManager->Tie("gear/gear-cmd-norm", this,
+                       &FGFCS::GetGearCmd,
+                       &FGFCS::SetGearCmd,
+                       true);
+  
+  PropertyManager->Tie("fcs/left-aileron-pos-rad", this,ofRad,
+                       &FGFCS::GetDaLPos,
+                       &FGFCS::SetDaLPos,
+                       true);
+  PropertyManager->Tie("fcs/left-aileron-pos-norm", this,ofNorm,
+                       &FGFCS::GetDaLPos,
+                       &FGFCS::SetDaLPos,
+                       true);
+  PropertyManager->Tie("fcs/mag-left-aileron-pos-rad", this,ofMag,
+                       &FGFCS::GetDaLPos,
+                       &FGFCS::SetDaLPos,
+                       true);
+  PropertyManager->Tie("fcs/right-aileron-pos-rad", this,ofRad,
+                       &FGFCS::GetDaRPos,
+                       &FGFCS::SetDaRPos,
+                       true);
+  PropertyManager->Tie("fcs/right-aileron-pos-norm", this,ofNorm,
+                       &FGFCS::GetDaRPos,
+                       &FGFCS::SetDaRPos,
+                       true);
+  PropertyManager->Tie("fcs/mag-right-aileron-pos-rad", this,ofMag,
+                       &FGFCS::GetDaRPos,
+                       &FGFCS::SetDaRPos,
+                       true);
+  
+  PropertyManager->Tie("fcs/elevator-pos-rad", this, ofRad,
+                       &FGFCS::GetDePos,
+                       &FGFCS::SetDePos,
+                       true );
+  PropertyManager->Tie("fcs/elevator-pos-norm", this,ofNorm,
+                       &FGFCS::GetDePos,                       
+                       &FGFCS::SetDePos,
+                       true );
+  PropertyManager->Tie("fcs/mag-elevator-pos-rad", this,ofMag,
+                       &FGFCS::GetDePos,
+                       &FGFCS::SetDePos,
+                       true );
+  
+  PropertyManager->Tie("fcs/rudder-pos-rad", this,ofRad,
+                       &FGFCS::GetDrPos,
+                       &FGFCS::SetDrPos,
+                       true);
+  PropertyManager->Tie("fcs/rudder-pos-norm", this,ofNorm,
+                       &FGFCS::GetDrPos,
+                       &FGFCS::SetDrPos,
+                       true);
+  PropertyManager->Tie("fcs/mag-rudder-pos-rad", this,ofMag,
+                       &FGFCS::GetDrPos,
+                       &FGFCS::SetDrPos,
+                       true);
+                       
+  PropertyManager->Tie("fcs/flap-pos-deg", this,ofRad,
+                       &FGFCS::GetDfPos,
+                       &FGFCS::SetDfPos,
+                       true);
+  PropertyManager->Tie("fcs/flap-pos-norm", this,ofNorm,
+                       &FGFCS::GetDfPos,
+                       &FGFCS::SetDfPos,
+                       true);
+  
+  PropertyManager->Tie("fcs/speedbrake-pos-rad", this,ofRad,
+                       &FGFCS::GetDsbPos,
+                       &FGFCS::SetDsbPos,
+                       true);
+  PropertyManager->Tie("fcs/speedbrake-pos-norm", this,ofNorm,
+                       &FGFCS::GetDsbPos,
+                       &FGFCS::SetDsbPos,
+                       true);
+  PropertyManager->Tie("fcs/mag-speedbrake-pos-rad", this,ofMag,
+                       &FGFCS::GetDsbPos,
+                       &FGFCS::SetDsbPos,
+                       true);
+                       
+  PropertyManager->Tie("fcs/spoiler-pos-rad", this,ofRad,
+                       &FGFCS::GetDspPos,
+                       &FGFCS::SetDspPos,
+                       true);
+  PropertyManager->Tie("fcs/spoiler-pos-norm", this,ofNorm,
+                       &FGFCS::GetDspPos,
+                       &FGFCS::SetDspPos,
+                       true);
+  PropertyManager->Tie("fcs/mag-spoiler-pos-rad", this,ofMag,
+                       &FGFCS::GetDspPos,
+                       &FGFCS::SetDspPos,
+                       true);
+                       
+  PropertyManager->Tie("gear/gear-pos-norm", this,
+                       &FGFCS::GetGearPos,
+                       &FGFCS::SetGearPos,
+                       true);
+}
+
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+void FGFCS::bindModel(void)
+{
+  unsigned i;
+  char tmp[80];
+  
+  for (i=0; i<ThrottleCmd.size(); i++) {
+    snprintf(tmp,80,"fcs/throttle-cmd-norm[%u]",i);
+    PropertyManager->Tie( tmp,this,i,
+                          &FGFCS::GetThrottleCmd,
+                          &FGFCS::SetThrottleCmd,
+                          true );
+    snprintf(tmp,80,"fcs/throttle-pos-norm[%u]",i);                      
+    PropertyManager->Tie( tmp,this,i,
+                          &FGFCS::GetThrottlePos,
+                          &FGFCS::SetThrottlePos,
+                          true );
+    if ( MixtureCmd.size() > i ) {
+      snprintf(tmp,80,"fcs/mixture-cmd-norm[%u]",i); 
+      PropertyManager->Tie( tmp,this,i,
+                            &FGFCS::GetMixtureCmd,
+                            &FGFCS::SetMixtureCmd,
+                            true );
+      snprintf(tmp,80,"fcs/mixture-pos-norm[%u]",i);                    
+      PropertyManager->Tie( tmp,this,i,
+                            &FGFCS::GetMixturePos,
+                            &FGFCS::SetMixturePos,
+                            true );
+    }
+    if ( PropAdvanceCmd.size() > i ) {
+      snprintf(tmp,80,"fcs/advance-cmd-norm[%u]",i); 
+      PropertyManager->Tie( tmp,this,i,
+                            &FGFCS::GetPropAdvanceCmd,
+                            &FGFCS::SetPropAdvanceCmd,
+                            true );
+      snprintf(tmp,80,"fcs/advance-pos-norm[%u]",i);                       
+      PropertyManager->Tie( tmp,this,i,
+                            &FGFCS::GetPropAdvance,
+                            &FGFCS::SetPropAdvance,
+                            true );
+    }
+  }
+}                            
+                          
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+void FGFCS::unbind(void)
+{
+  PropertyManager->Untie("fcs/aileron-cmd-norm");
+  PropertyManager->Untie("fcs/elevator-cmd-norm");
+  PropertyManager->Untie("fcs/rudder-cmd-norm");
+  PropertyManager->Untie("fcs/flap-cmd-norm");
+  PropertyManager->Untie("fcs/speedbrake-cmd-norm");
+  PropertyManager->Untie("fcs/spoiler-cmd-norm");
+  PropertyManager->Untie("fcs/pitch-trim-cmd-norm");
+  PropertyManager->Untie("fcs/roll-trim-cmd-norm");
+  PropertyManager->Untie("fcs/yaw-trim-cmd-norm");
+  PropertyManager->Untie("gear/gear-cmd-norm");
+  PropertyManager->Untie("fcs/left-aileron-pos-rad");
+  PropertyManager->Untie("fcs/mag-left-aileron-pos-rad");
+  PropertyManager->Untie("fcs/left-aileron-pos-norm");
+  PropertyManager->Untie("fcs/right-aileron-pos-rad");
+  PropertyManager->Untie("fcs/mag-right-aileron-pos-rad");
+  PropertyManager->Untie("fcs/right-aileron-pos-norm");
+  PropertyManager->Untie("fcs/elevator-pos-rad");
+  PropertyManager->Untie("fcs/mag-elevator-pos-rad");
+  PropertyManager->Untie("fcs/elevator-pos-norm");
+  PropertyManager->Untie("fcs/rudder-pos-rad");
+  PropertyManager->Untie("fcs/mag-rudder-pos-rad");
+  PropertyManager->Untie("fcs/rudder-pos-norm");
+  PropertyManager->Untie("fcs/flap-pos-deg");
+  PropertyManager->Untie("fcs/flap-pos-norm");
+  PropertyManager->Untie("fcs/speedbrake-pos-rad");
+  PropertyManager->Untie("fcs/mag-speedbrake-pos-rad");
+  PropertyManager->Untie("fcs/speedbrake-pos-norm");
+  PropertyManager->Untie("fcs/spoiler-pos-rad");
+  PropertyManager->Untie("fcs/mag-spoiler-pos-rad");
+  PropertyManager->Untie("fcs/spoiler-pos-norm");
+  PropertyManager->Untie("gear/gear-pos-norm");
+}
+
+//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+//    The bitmasked value choices are as follows:
+//    unset: In this case (the default) JSBSim would only print
+//       out the normally expected messages, essentially echoing
+//       the config files as they are read. If the environment
+//       variable is not set, debug_lvl is set to 1 internally
+//    0: This requests JSBSim not to output any messages
+//       whatsoever.
+//    1: This value explicity requests the normal JSBSim
+//       startup messages
+//    2: This value asks for a message to be printed out when
+//       a class is instantiated
+//    4: When this value is set, a message is displayed when a
+//       FGModel object executes its Run() method
+//    8: When this value is set, various runtime state variables
+//       are printed out periodically
+//    16: When set various parameters are sanity checked and
+//       a message is printed out when they go out of bounds
+
+void FGFCS::Debug(int from)
+{
+  if (debug_lvl <= 0) return;
+
+  if (debug_lvl & 1) { // Standard console startup message output
+    if (from == 0) { // Constructor
+
+    }
+  }
+  if (debug_lvl & 2 ) { // Instantiation/Destruction notification
+    if (from == 0) cout << "Instantiated: FGFCS" << endl;
+    if (from == 1) cout << "Destroyed:    FGFCS" << endl;
+  }
+  if (debug_lvl & 4 ) { // Run() method entry print for FGModel-derived objects
+  }
+  if (debug_lvl & 8 ) { // Runtime state variables
+  }
+  if (debug_lvl & 16) { // Sanity checking
+  }
+  if (debug_lvl & 64) {
+    if (from == 0) { // Constructor
+      cout << IdSrc << endl;
+      cout << IdHdr << endl;
+    }
+  }
 }