org.ptolemy.qss

Class QSSIntegrator

java.lang.Object

ptolemy.kernel.util.NamedObj

ptolemy.kernel.InstantiableNamedObj

ptolemy.kernel.Entity<T>

ptolemy.kernel.ComponentEntity<T>

ptolemy.actor.AtomicActor<TypedIOPort>

ptolemy.actor.TypedAtomicActor

org.ptolemy.qss.QSSIntegrator

All Implemented Interfaces:

java.lang.Cloneable, Actor, Executable, FiringsRecordable, Initializable, TypedActor, Changeable, Debuggable, DebugListener, Derivable, Instantiable, ModelErrorHandler, MoMLExportable, Moveable, Nameable

Deprecated.

Use QSSIntegrator instead.

@Deprecated
public class QSSIntegrator
extends TypedAtomicActor

A quantized-state integrator.

Since:

Ptolemy II 10.0

Version:

$Id$

Author:

David Broman, Edward A. Lee, Thierry Nouidui, Michael Wetter

Pt.AcceptedRating:

Red (cxh)

Pt.ProposedRating:

Yellow (eal)

Nested Class Summary

Nested classes/interfaces inherited from class ptolemy.kernel.Entity

Entity.ContainedObjectsIterator

Field Summary

Fields

Modifier and Type	Field and Description
protected static double	_SMALL Deprecated. A small number, below which the slope is considered to be zero.
TypedIOPort	q Deprecated. Output (the quantized state).
Parameter	quantum Deprecated. Quantum.
TypedIOPort	u Deprecated. Input (the derivative).
Parameter	xInit Deprecated. Initial value of the state.

Fields inherited from class ptolemy.actor.TypedAtomicActor

_typesValid

Fields inherited from class ptolemy.actor.AtomicActor

_actorFiringListeners, _initializables, _notifyingActorFiring, _stopRequested

Fields inherited from class ptolemy.kernel.util.NamedObj

_changeListeners, _changeLock, _changeRequests, _debugging, _debugListeners, _deferChangeRequests, _elementName, _isPersistent, _verbose, _workspace, ATTRIBUTES, CLASSNAME, COMPLETE, CONTENTS, DEEP, FULLNAME, LINKS

Fields inherited from interface ptolemy.actor.Executable

COMPLETED, NOT_READY, STOP_ITERATING

Constructor Summary

Constructors

Constructor and Description
QSSIntegrator(CompositeEntity container, java.lang.String name) Deprecated. Construct a new instance of this integrator.

Method Summary

Modifier and Type	Method and Description
protected double	_derivative(double input) Deprecated. Return the derivative (slope) at the current time with the given input value.
protected Time	_nextCrossingTime(double slope, double start, double reference, double quantum, Time currentTime) Deprecated. Return the next time at which a line with the given slope will rise or fall from the specified starting point to the specified reference plus or minus the specified quantum.
protected double	_nextOutputValue(double slope, double reference, double quantum) Deprecated. Return the next output value, which is the reference plus the quantum if the slope is positive, and the reference minus the quantum otherwise.
protected double	_quantize(double x) Deprecated. Return the argument quantized to a multiple of quantum given by the quantum parameter.
void	declareDelayDependency() Deprecated. Declare that the output does not depend on the input in a firing.
void	fire() Deprecated. If it is time to produce a quantized output, produce it.
void	initialize() Deprecated. Initialize this actor to indicate that no input has yet been provided.
boolean	isStrict() Deprecated. Return false, indicating that this actor can fire even if its input is unknown.
boolean	postfire() Deprecated. Update the calculation of the next output time and request a refiring at that time.

Methods inherited from class ptolemy.actor.TypedAtomicActor

_containedTypeConstraints, _customTypeConstraints, _defaultTypeConstraints, _fireAt, _fireAt, attributeTypeChanged, clone, clone, isBackwardTypeInferenceEnabled, newPort, typeConstraintList, typeConstraints

Methods inherited from class ptolemy.actor.AtomicActor

_actorFiring, _actorFiring, _declareDelayDependency, addActorFiringListener, addInitializable, connectionsChanged, createReceivers, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, isFireFunctional, iterate, newReceiver, outputPortList, prefire, preinitialize, pruneDependencies, recordFiring, removeActorFiringListener, removeDependency, removeInitializable, setContainer, stop, stopFire, terminate, wrapup

Methods inherited from class ptolemy.kernel.ComponentEntity

_adjustDeferrals, _checkContainer, _getContainedObject, _propagateExistence, getContainer, instantiate, isAtomic, isOpaque, moveDown, moveToFirst, moveToIndex, moveToLast, moveUp, propagateExistence, setName

Methods inherited from class ptolemy.kernel.Entity

_addPort, _description, _exportMoMLContents, _removePort, _validateSettables, connectedPortList, connectedPorts, containedObjectsIterator, getAttribute, getPort, getPorts, linkedRelationList, linkedRelations, portList, removeAllPorts, setClassDefinition, uniqueName

Methods inherited from class ptolemy.kernel.InstantiableNamedObj

_setParent, exportMoML, getChildren, getElementName, getParent, getPrototypeList, isClassDefinition, isWithinClassDefinition

Methods inherited from class ptolemy.kernel.util.NamedObj

_addAttribute, _adjustOverride, _attachText, _cloneFixAttributeFields, _containedDecorators, _copyChangeRequestList, _debug, _debug, _debug, _debug, _debug, _executeChangeRequests, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _notifyHierarchyListenersAfterChange, _notifyHierarchyListenersBeforeChange, _propagateValue, _removeAttribute, _splitName, _stripNumericSuffix, addChangeListener, addDebugListener, addHierarchyListener, attributeChanged, attributeDeleted, attributeList, attributeList, decorators, deepContains, depthInHierarchy, description, description, event, executeChangeRequests, exportMoML, exportMoML, exportMoML, exportMoML, exportMoMLPlain, getAttribute, getAttributes, getChangeListeners, getClassName, getDecoratorAttribute, getDecoratorAttributes, getDerivedLevel, getDerivedList, getDisplayName, getFullName, getModelErrorHandler, getName, getName, getSource, handleModelError, isDeferringChangeRequests, isOverridden, isPersistent, lazyContainedObjectsIterator, message, notifyOfNameChange, propagateValue, propagateValues, removeAttribute, removeChangeListener, removeDebugListener, removeHierarchyListener, requestChange, setClassName, setDeferringChangeRequests, setDerivedLevel, setDisplayName, setModelErrorHandler, setPersistent, setSource, sortContainedObjects, toplevel, toString, validateSettables, workspace

Methods inherited from class java.lang.Object

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

Methods inherited from interface ptolemy.actor.Actor

createReceivers, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, newReceiver, outputPortList

Methods inherited from interface ptolemy.actor.Executable

isFireFunctional, iterate, prefire, stop, stopFire, terminate

Methods inherited from interface ptolemy.actor.Initializable

addInitializable, preinitialize, removeInitializable, wrapup

Methods inherited from interface ptolemy.kernel.util.Nameable

description, getContainer, getDisplayName, getFullName, getName, getName, setName

Methods inherited from interface ptolemy.kernel.util.Derivable

getDerivedLevel, getDerivedList, propagateValue

Field Detail

u

public TypedIOPort u

Deprecated.

Input (the derivative).

q

public TypedIOPort q

Deprecated.

Output (the quantized state).

xInit

public Parameter xInit

Deprecated.

Initial value of the state.

quantum

public Parameter quantum

Deprecated.

Quantum.

_SMALL

protected static final double _SMALL

Deprecated.

A small number, below which the slope is considered to be zero.

See Also:

Constant Field Values

Constructor Detail

QSSIntegrator

public QSSIntegrator(CompositeEntity container,
                     java.lang.String name)
              throws IllegalActionException,
                     NameDuplicationException

Deprecated.

Construct a new instance of this integrator.

Parameters:

container - The container.

name - The name.

Throws:

IllegalActionException - If setting up ports and parameters fails.

NameDuplicationException - If the container already contains an object with this name.

Method Detail

declareDelayDependency

public void declareDelayDependency()
                            throws IllegalActionException

Deprecated.

Declare that the output does not depend on the input in a firing.

Overrides:

declareDelayDependency in class AtomicActor<TypedIOPort>

Throws:

IllegalActionException - If the causality interface cannot be computed.

See Also:

AtomicActor.getCausalityInterface()

fire

public void fire()
          throws IllegalActionException

Deprecated.

If it is time to produce a quantized output, produce it. Otherwise, indicate that the output is absent.

Specified by:

fire in interface Executable

Overrides:

fire in class AtomicActor<TypedIOPort>

Throws:

IllegalActionException - If sending an output fails.

initialize

public void initialize()
                throws IllegalActionException

Deprecated.

Initialize this actor to indicate that no input has yet been provided.

Specified by:

initialize in interface Initializable

Overrides:

initialize in class AtomicActor<TypedIOPort>

Throws:

IllegalActionException - If a derived class throws it.

isStrict

public boolean isStrict()

Deprecated.

Return false, indicating that this actor can fire even if its input is unknown.

Specified by:

isStrict in interface Executable

Overrides:

isStrict in class AtomicActor<TypedIOPort>

Returns:

False.

postfire

public boolean postfire()
                 throws IllegalActionException

Deprecated.

Update the calculation of the next output time and request a refiring at that time. If there is a new input, read it and update the slope.

Specified by:

postfire in interface Executable

Overrides:

postfire in class AtomicActor<TypedIOPort>

Returns:

True if the base class returns true.

Throws:

IllegalActionException - If reading inputs or parameters fails.

_derivative

protected double _derivative(double input)

Deprecated.

Return the derivative (slope) at the current time with the given input value. In this base class, the input is assumed to be the derivative, so this method just returns its argument. Derived classes may provide some other function to provide a derivative.

Parameters:

input - The input value.

Returns:

The current derivative.

_nextCrossingTime

protected Time _nextCrossingTime(double slope,
                                 double start,
                                 double reference,
                                 double quantum,
                                 Time currentTime)

Deprecated.

Return the next time at which a line with the given slope will rise or fall from the specified starting point to the specified reference plus or minus the specified quantum. If the specified slope is smaller than the value of _SMALL, then return Time.POSITIVE_INFINITY. If the starting point has already hit or crossed the specified reference plus or minus the specified quantum, then return the current time.

Parameters:

slope - The derivative.

start - The starting point.

reference - The reference point.

quantum - The quantum.

currentTime - The current time.

Returns:

The next event time.

_nextOutputValue

protected double _nextOutputValue(double slope,
                                  double reference,
                                  double quantum)

Deprecated.

Return the next output value, which is the reference plus the quantum if the slope is positive, and the reference minus the quantum otherwise.

Parameters:

slope - The slope.

reference - The reference.

quantum - The quantum.

Returns:

The reference plus or minus the quantum.

_quantize

protected double _quantize(double x)
                    throws IllegalActionException

Deprecated.

Return the argument quantized to a multiple of quantum given by the quantum parameter.

Parameters:

x - The value to quantize.

Returns:

A quantized value.

Throws:

IllegalActionException - If the quantum parameter cannot be evaluated.