public class SmoothZeroCrossingDetector extends TypedAtomicActor
NOTE: This actor currently discards all derivatives of the input higher than the second derivative. Hence, it could miss a zero crossing by a substantial margin if there are higher-order derivatives.
QSSDirectorEntity.ContainedObjectsIterator| Modifier and Type | Field and Description |
|---|---|
protected double |
_level
The level threshold this actor detects.
|
StringParameter |
direction
A parameter that can be used to limit the detected level crossings
to rising or falling.
|
Parameter |
errorTolerance
The error tolerance specifying how close the time needs to be to
the zero crossing to produce the output event.
|
TypedIOPort |
input
Input signal.
|
Parameter |
level
The parameter that specifies the level threshold.
|
TypedIOPort |
output
Output event with value 0.0 when the zero crossing occurs.
|
Parameter |
value
The output value to produce when a level-crossing is detected.
|
_typesValid_actorFiringListeners, _initializables, _notifyingActorFiring, _stopRequested_changeListeners, _changeLock, _changeRequests, _debugging, _debugListeners, _deferChangeRequests, _elementName, _isPersistent, _verbose, _workspace, ATTRIBUTES, CLASSNAME, COMPLETE, CONTENTS, DEEP, FULLNAME, LINKSCOMPLETED, NOT_READY, STOP_ITERATING| Constructor and Description |
|---|
SmoothZeroCrossingDetector(CompositeEntity container,
java.lang.String name)
Construct a new instance.
|
| Modifier and Type | Method and Description |
|---|---|
void |
attributeChanged(Attribute attribute)
Update the attribute if it has been changed.
|
java.lang.Object |
clone(Workspace workspace)
Clone the actor into the specified workspace and set the type
constraints.
|
void |
fire()
If an input is available and either it equals zero or it has crossed
zero from the most recently seen input, then output 0.0; otherwise, if
an input available and that input is a
SmoothToken with non-zero
derivatives, then predict the time at which a zero crossing will occur
and request a refiring at that time; Otherwise, if no input is available
and current time matches the time of a previous refiring request, then
produce the output 0.0. |
void |
initialize()
Initialize this actor to indicate that no input has yet been provided.
|
_containedTypeConstraints, _customTypeConstraints, _defaultTypeConstraints, _fireAt, _fireAt, attributeTypeChanged, clone, isBackwardTypeInferenceEnabled, newPort, typeConstraintList, typeConstraints_actorFiring, _actorFiring, _declareDelayDependency, addActorFiringListener, addInitializable, connectionsChanged, createReceivers, declareDelayDependency, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, isFireFunctional, isStrict, iterate, newReceiver, outputPortList, postfire, prefire, preinitialize, pruneDependencies, recordFiring, removeActorFiringListener, removeDependency, removeInitializable, setContainer, stop, stopFire, terminate, wrapup_adjustDeferrals, _checkContainer, _getContainedObject, _propagateExistence, getContainer, instantiate, isAtomic, isOpaque, moveDown, moveToFirst, moveToIndex, moveToLast, moveUp, propagateExistence, setName_addPort, _description, _exportMoMLContents, _removePort, _validateSettables, connectedPortList, connectedPorts, containedObjectsIterator, getAttribute, getPort, getPorts, linkedRelationList, linkedRelations, portList, removeAllPorts, setClassDefinition, uniqueName_setParent, exportMoML, getChildren, getElementName, getParent, getPrototypeList, isClassDefinition, isWithinClassDefinition_addAttribute, _adjustOverride, _attachText, _cloneFixAttributeFields, _containedDecorators, _copyChangeRequestList, _debug, _debug, _debug, _debug, _debug, _executeChangeRequests, _getIndentPrefix, _isMoMLSuppressed, _markContentsDerived, _notifyHierarchyListenersAfterChange, _notifyHierarchyListenersBeforeChange, _propagateValue, _removeAttribute, _splitName, _stripNumericSuffix, addChangeListener, addDebugListener, addHierarchyListener, 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, workspaceequals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitcreateReceivers, getCausalityInterface, getDirector, getExecutiveDirector, getManager, inputPortList, newReceiver, outputPortListisFireFunctional, isStrict, iterate, postfire, prefire, stop, stopFire, terminateaddInitializable, preinitialize, removeInitializable, wrapupdescription, getContainer, getDisplayName, getFullName, getName, getName, setNamegetDerivedLevel, getDerivedList, propagateValuepublic StringParameter direction
public Parameter errorTolerance
public TypedIOPort input
public Parameter level
public TypedIOPort output
public Parameter value
protected double _level
public SmoothZeroCrossingDetector(CompositeEntity container, java.lang.String name) throws IllegalActionException, NameDuplicationException
container - The container.name - The name.IllegalActionException - If setting up ports and parameters fails.NameDuplicationException - If the container already contains an object with this name.public void attributeChanged(Attribute attribute) throws IllegalActionException
attributeChanged in class NamedObjattribute - The attribute that has changed.IllegalActionException - If the attribute change failed.public java.lang.Object clone(Workspace workspace) throws java.lang.CloneNotSupportedException
clone in class TypedAtomicActorworkspace - The workspace for the new object.java.lang.CloneNotSupportedException - If a derived class contains
an attribute that cannot be cloned.NamedObj.exportMoML(Writer, int, String),
NamedObj.setDeferringChangeRequests(boolean)public void fire()
throws IllegalActionException
SmoothToken with non-zero
derivatives, then predict the time at which a zero crossing will occur
and request a refiring at that time; Otherwise, if no input is available
and current time matches the time of a previous refiring request, then
produce the output 0.0.fire in interface Executablefire in class AtomicActor<TypedIOPort>IllegalActionException - If sending an output fails.public void initialize()
throws IllegalActionException
initialize in interface Initializableinitialize in class AtomicActor<TypedIOPort>IllegalActionException - If the director is not a DEDirector.