FGBrushLessDCMotor.h

/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 Header:       FGBrussLessDCMotor.h
 Author:       Paolo Becchi
 Date started: 1-1-2022
 
 ----- Copyright (C) 2022  Paolo Becchi (pbecchi@aerobusiness.it) --------------
  This program is free software; you can redistribute it and/or modify it under
  the terms of the GNU Lesser General Public License as published by the Free
  Software Foundation; either version 2 of the License, or (at your option) any
  later version.
 
  This program is distributed in the hope that it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
  details.
 
  You should have received a copy of the GNU Lesser General Public License along
  with this program; if not, write to the Free Software Foundation, Inc., 59
  Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 
  Further information about the GNU Lesser General Public License can also be
  found on the world wide web at http://www.gnu.org
 
HISTORY
--------------------------------------------------------------------------------
1/01/2022   Created
 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
SENTRY
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#ifndef FGBrushLessDCMotor_H
#define FGBrushLessDCMotor_H
 
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
INCLUDES
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#include "FGEngine.h"
 
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
FORWARD DECLARATIONS
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namespace JSBSim {
 
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
CLASS DOCUMENTATION
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// conversion factors
constexpr double NMtoftpound = 1.3558;
constexpr double hptowatts = 745.7;
constexpr double WattperRPMtoftpound = 60 / (2 * M_PI * NMtoftpound);
 
/*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
CLASS DECLARATION
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
class FGBrushLessDCMotor : public FGEngine
{
public:
  FGBrushLessDCMotor(FGFDMExec* exec, Element *el, int engine_number, FGEngine::Inputs& input);
  ~FGBrushLessDCMotor();
 
  void Calculate(void);
  double GetPowerAvailable(void) const {return (HP * hptoftlbssec);}
  double CalcFuelNeed(void) { return 0.; }
  std::string GetEngineLabels(const std::string& delimiter);
  std::string GetEngineValues(const std::string& delimiter);
 
private:
  double ZeroTorqueCurrent; // Zero torque current [A]
  double CoilResistance;    // Internal resistance [Ohm]
  double PowerWatts;        // Maximum engine power
  double MaxVolts;          // Max voltage available from battery [V]
  double Kv;                // Speed constant of brusless DC motors [RPM/V]
  double HP;                // Engine output, in horsepower
  double Current;           // Current [A]
  void Debug(int from);
};
}
//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
#endif