Package org.orekit.control.indirect.adjoint.cost

Class AbstractCartesianCost

java.lang.Object

org.orekit.control.indirect.adjoint.cost.AbstractCartesianCost

All Implemented Interfaces:

CartesianCost

Direct Known Subclasses:

BoundedCartesianEnergy, CartesianFlightDurationCost, CartesianFuelCost, PenalizedCartesianFuelCost, UnboundedCartesianEnergy, UnboundedCartesianEnergyNeglectingMass

public abstract class AbstractCartesianCost
extends Object
implements CartesianCost

Abstract class for cost with Cartesian coordinates.

Since:

13.0

Author:

Romain Serra

See Also:

CartesianCost

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractCartesianCost(String name, double massFlowRateFactor)	Constructor.

Method Summary

Modifier and Type	Method	Description
protected EventDetector	buildSwitchDetector(ControlSwitchFunction controlSwitchFunction, EventDetectionSettings detectionSettings)	Build event detector for control switches.
int	getAdjointDimension()	Getter for adjoint vector dimension.
String	getAdjointName()	Getter for adjoint vector name.
protected double	getAdjointVelocityNorm(double[] adjointVariables)	Computes the Euclidean norm of the adjoint velocity vector.
double	getMassFlowRateFactor()	Getter for mass flow rate factor.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.orekit.control.indirect.adjoint.cost.CartesianCost

getCostDerivativeProvider, getEventDetectors, getHamiltonianContribution, getThrustAccelerationVector, updateAdjointDerivatives

Constructor Detail

AbstractCartesianCost

protected AbstractCartesianCost(String name,
                                double massFlowRateFactor)

Constructor.

Parameters:

name - name

massFlowRateFactor - mass flow rate factor

Method Detail

getAdjointDimension

public int getAdjointDimension()

Getter for adjoint vector dimension.

Specified by:

getAdjointDimension in interface CartesianCost

Returns:

adjoint dimension

getAdjointName

public String getAdjointName()

Getter for adjoint vector name.

Specified by:

getAdjointName in interface CartesianCost

Returns:

name

getMassFlowRateFactor

public double getMassFlowRateFactor()

Getter for mass flow rate factor. It is negated and multiplied by the thrust force magnitude to obtain the mass time derivative. The fact that it is a constant means that the exhaust speed is assumed to be independent of time.

Specified by:

getMassFlowRateFactor in interface CartesianCost

Returns:

mass flow rate factor

getAdjointVelocityNorm

protected double getAdjointVelocityNorm(double[] adjointVariables)

Computes the Euclidean norm of the adjoint velocity vector.

Parameters:

adjointVariables - adjoint vector

Returns:

norm of adjoint velocity

buildSwitchDetector

protected EventDetector buildSwitchDetector(ControlSwitchFunction controlSwitchFunction,
                                            EventDetectionSettings detectionSettings)

Build event detector for control switches.

Parameters:

controlSwitchFunction - switch function

detectionSettings - event detection settings

Returns:

event detector

Since:

14.0