Detailed Description

Definition at line 87 of file FGTrimAxis.h.

Inheritance diagram for FGTrimAxis:

Collaboration diagram for FGTrimAxis:

Public Member Functions
	FGTrimAxis (FGFDMExec fdmex, FGInitialCondition IC, State state, Control control)
	Constructor for Trim Axis class. More...

	~FGTrimAxis ()
	Destructor.

void	AxisReport (void)

double	GetAvgStability (void)

double	GetControl (void)

double	GetControlMax (void)

double	GetControlMin (void)

std::string	GetControlName (void)

Control	GetControlType (void)

int	GetIterationLimit (void)

int	GetRunCount (void)

double	GetSolverEps (void)

int	GetStability (void)

double	GetState (void)

std::string	GetStateName (void)

double	GetStateTarget (void)

State	GetStateType (void)

double	GetTolerance (void)

bool	InTolerance (void)

void	Run (void)
	This function iterates through a call to the FGFDMExec::RunIC() function until the desired trimming condition falls inside a tolerance.

void	SetControl (double value)

void	SetControlLimits (double min, double max)

void	SetControlToMax (void)

void	SetControlToMin (void)

void	SetIterationLimit (int ii)

void	SetSolverEps (double ff)

void	SetStateTarget (double target)

void	SetTolerance (double ff)

Public Member Functions inherited from FGJSBBase
	FGJSBBase ()
	Constructor for FGJSBBase.

virtual	~FGJSBBase ()
	Destructor for FGJSBBase.

void	PutMessage (const Message &msg)
	Places a Message structure on the Message queue. More...

void	PutMessage (const std::string &text)
	Creates a message with the given text and places it on the queue. More...

void	PutMessage (const std::string &text, bool bVal)
	Creates a message with the given text and boolean value and places it on the queue. More...

void	PutMessage (const std::string &text, int iVal)
	Creates a message with the given text and integer value and places it on the queue. More...

void	PutMessage (const std::string &text, double dVal)
	Creates a message with the given text and double value and places it on the queue. More...

int	SomeMessages (void) const
	Reads the message on the queue (but does not delete it). More...

void	ProcessMessage (void)
	Reads the message on the queue and removes it from the queue. More...

Message *	ProcessNextMessage (void)
	Reads the next message on the queue and removes it from the queue. More...

void	disableHighLighting (void)
	Disables highlighting in the console output.

Additional Inherited Members
Public Types inherited from FGJSBBase
enum	{ eL = 1, eM, eN }
	Moments L, M, N.

enum	{ eP = 1, eQ, eR }
	Rates P, Q, R.

enum	{ eU = 1, eV, eW }
	Velocities U, V, W.

enum	{ eX = 1, eY, eZ }
	Positions X, Y, Z.

enum	{ ePhi = 1, eTht, ePsi }
	Euler angles Phi, Theta, Psi.

enum	{ eDrag = 1, eSide, eLift }
	Stability axis forces, Drag, Side force, Lift.

enum	{ eRoll = 1, ePitch, eYaw }
	Local frame orientation Roll, Pitch, Yaw.

enum	{ eNorth = 1, eEast, eDown }
	Local frame position North, East, Down.

enum	{ eLat = 1, eLong, eRad }
	Locations Radius, Latitude, Longitude.

enum	{ inNone = 0, inDegrees, inRadians, inMeters, inFeet }
	Conversion specifiers.

Static Public Member Functions inherited from FGJSBBase
static const std::string &	GetVersion (void)
	Returns the version number of JSBSim. More...

static constexpr double	KelvinToFahrenheit (double kelvin)
	Converts from degrees Kelvin to degrees Fahrenheit. More...

static constexpr double	CelsiusToRankine (double celsius)
	Converts from degrees Celsius to degrees Rankine. More...

static constexpr double	RankineToCelsius (double rankine)
	Converts from degrees Rankine to degrees Celsius. More...

static constexpr double	KelvinToRankine (double kelvin)
	Converts from degrees Kelvin to degrees Rankine. More...

static constexpr double	RankineToKelvin (double rankine)
	Converts from degrees Rankine to degrees Kelvin. More...

static constexpr double	FahrenheitToCelsius (double fahrenheit)
	Converts from degrees Fahrenheit to degrees Celsius. More...

static constexpr double	CelsiusToFahrenheit (double celsius)
	Converts from degrees Celsius to degrees Fahrenheit. More...

static constexpr double	CelsiusToKelvin (double celsius)
	Converts from degrees Celsius to degrees Kelvin. More...

static constexpr double	KelvinToCelsius (double kelvin)
	Converts from degrees Kelvin to degrees Celsius. More...

static constexpr double	FeetToMeters (double measure)
	Converts from feet to meters. More...

static double	PitotTotalPressure (double mach, double p)
	Compute the total pressure in front of the Pitot tube. More...

static double	MachFromImpactPressure (double qc, double p)
	Compute the Mach number from the differential pressure (qc) and the static pressure. More...

static double	VcalibratedFromMach (double mach, double p)
	Calculate the calibrated airspeed from the Mach number. More...

static double	MachFromVcalibrated (double vcas, double p)
	Calculate the Mach number from the calibrated airspeed.Based on the formulas in the US Air Force Aircraft Performance Flight Testing Manual (AFFTC-TIH-99-01). More...

static bool	EqualToRoundoff (double a, double b)
	Finite precision comparison. More...

static bool	EqualToRoundoff (float a, float b)
	Finite precision comparison. More...

static bool	EqualToRoundoff (float a, double b)
	Finite precision comparison. More...

static bool	EqualToRoundoff (double a, float b)
	Finite precision comparison. More...

static constexpr double	Constrain (double min, double value, double max)
	Constrain a value between a minimum and a maximum value.

static constexpr double	sign (double num)

static double	GaussianRandomNumber (void)

Static Public Attributes inherited from FGJSBBase
static char	highint [5] = {27, '[', '1', 'm', '\0' }
	highlights text

static char	halfint [5] = {27, '[', '2', 'm', '\0' }
	low intensity text

static char	normint [6] = {27, '[', '2', '2', 'm', '\0' }
	normal intensity text

static char	reset [5] = {27, '[', '0', 'm', '\0' }
	resets text properties

static char	underon [5] = {27, '[', '4', 'm', '\0' }
	underlines text

static char	underoff [6] = {27, '[', '2', '4', 'm', '\0' }
	underline off

static char	fgblue [6] = {27, '[', '3', '4', 'm', '\0' }
	blue text

static char	fgcyan [6] = {27, '[', '3', '6', 'm', '\0' }
	cyan text

static char	fgred [6] = {27, '[', '3', '1', 'm', '\0' }
	red text

static char	fggreen [6] = {27, '[', '3', '2', 'm', '\0' }
	green text

static char	fgdef [6] = {27, '[', '3', '9', 'm', '\0' }
	default text

static short	debug_lvl = 1

Static Protected Member Functions inherited from FGJSBBase
static std::string	CreateIndexedPropertyName (const std::string &Property, int index)

Static Protected Attributes inherited from FGJSBBase
static Message	localMsg

static std::queue< Message >	Messages

static unsigned int	messageId = 0

static constexpr double	radtodeg = 180. / M_PI

static constexpr double	degtorad = M_PI / 180.

static constexpr double	hptoftlbssec = 550.0

static constexpr double	psftoinhg = 0.014138

static constexpr double	psftopa = 47.88

static constexpr double	ktstofps = 1.68781

static constexpr double	fpstokts = 1.0 / ktstofps

static constexpr double	inchtoft = 1.0/12.0

static constexpr double	fttom = 0.3048

static constexpr double	m3toft3 = 1.0/(fttomfttomfttom)

static constexpr double	in3tom3 = inchtoftinchtoftinchtoft/m3toft3

static constexpr double	inhgtopa = 3386.38

static constexpr double	slugtolb = 32.174049
	Note that definition of lbtoslug by the inverse of slugtolb and not to a different constant you can also get from some tables will make lbtoslug*slugtolb == 1 up to the magnitude of roundoff. More...

static constexpr double	lbtoslug = 1.0/slugtolb

static constexpr double	kgtolb = 2.20462

static constexpr double	kgtoslug = 0.06852168

static const std::string	needed_cfg_version = "2.0"

static const std::string	JSBSim_version = JSBSIM_VERSION " " __DATE__ " " __TIME__

static int	gaussian_random_number_phase = 0

Constructor & Destructor Documentation

◆ FGTrimAxis()

FGTrimAxis	(	FGFDMExec *	fdmex,
		FGInitialCondition *	IC,
		State	state,
		Control	control
	)

Constructor for Trim Axis class.

Parameters

fdmex	FGFDMExec pointer
IC	pointer to initial conditions instance
state	a State type (enum)
control	a Control type (enum)

Definition at line 61 of file FGTrimAxis.cpp.

                                      {
  
   fdmex=fdex;
   fgic=ic;
   state=st;
   control=ctrl;
   max_iterations=10;
   control_value=0;
   its_to_stable_value=0;
   total_iterations=0;
   total_stability_iterations=0;
   state_convert=1.0;
   control_convert=1.0;
   state_value=0;
   state_target=0;
   switch(state) {
     case tUdot: tolerance = DEFAULT_TOLERANCE; break;
     case tVdot: tolerance = DEFAULT_TOLERANCE; break;
     case tWdot: tolerance = DEFAULT_TOLERANCE; break;
     case tQdot: tolerance = DEFAULT_TOLERANCE / 10; break;
     case tPdot: tolerance = DEFAULT_TOLERANCE / 10; break;
     case tRdot: tolerance = DEFAULT_TOLERANCE / 10; break;
     case tHmgt: tolerance = 0.01; break;
     case  tNlf: state_target=1.0; tolerance = 1E-5; break;
     case tAll: break;
   }
  
   solver_eps=tolerance;
   switch(control) {
   case tThrottle:
     control_min=0;
     control_max=1;
     control_value=0.5;
     break;
   case tBeta:
     control_min=-30*degtorad;
     control_max=30*degtorad;
     control_convert=radtodeg;
     break;
   case tAlpha:
     control_min=fdmex->GetAerodynamics()->GetAlphaCLMin();
     control_max=fdmex->GetAerodynamics()->GetAlphaCLMax();
     if(control_max <= control_min) {
       control_max=20*degtorad;
       control_min=-5*degtorad;
     }
     control_value= (control_min+control_max)/2;
     control_convert=radtodeg;
     solver_eps=tolerance/100;
     break;
   case tPitchTrim:
   case tElevator:
   case tRollTrim:
   case tAileron:
   case tYawTrim:
   case tRudder:
     control_min=-1;
     control_max=1;
     state_convert=radtodeg;
     solver_eps=tolerance/100;
     break;
   case tAltAGL:
     control_min=0;
     control_max=30;
     control_value=ic->GetAltitudeAGLFtIC();
     solver_eps=tolerance/100;
     break;
   case tTheta:
     control_min=ic->GetThetaRadIC() - 5*degtorad;
     control_max=ic->GetThetaRadIC() + 5*degtorad;
     state_convert=radtodeg;
     break;
   case tPhi:
     control_min=ic->GetPhiRadIC() - 30*degtorad;
     control_max=ic->GetPhiRadIC() + 30*degtorad;
     state_convert=radtodeg;
     control_convert=radtodeg;
     break;
   case tGamma:
     solver_eps=tolerance/100;
     control_min=-80*degtorad;
     control_max=80*degtorad;
     control_convert=radtodeg;
     break;
   case tHeading:
     control_min=ic->GetPsiRadIC() - 30*degtorad;
     control_max=ic->GetPsiRadIC() + 30*degtorad;
     state_convert=radtodeg;
     break;
   }
  
  
   Debug(0);
 }

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The documentation for this class was generated from the following files:

Detailed Description

Public Member Functions

Additional Inherited Members

Constructor & Destructor Documentation

◆ FGTrimAxis()