This section specifies the template FaultModeDefinition.
The specification comprises a SysML Block that represents the template and an
associated Parametric Diagram that defines the templates and
PLCS PSMTemplate objects
instantiated by the FaultModeDefinition template.
The specification comprises the following sections:
- Section Description provides a
description of the template;
- Section Template Block specifies the SysML
Block that represents the template;
- Section Template Properties specifies
the properties, i.e. the SysML Part, Reference and Value properties of the
templates SysML Block;
- Section Template Output Ports
specifies the SysML Output Ports of the templates SysML Block. These bind to the
templates and PLCS PSM objects
instantiated by the FaultModeDefinition template as
described in section Template
Parametric Diagram;
- Section Template Constraints specifies
the constraints on PLCS PSMTemplate objects instantiated by the
FaultModeDefinition template;
- Section Template Parametric
Diagram specifies the templates and PLCS PSMTemplate objects instantiated by the
FaultModeDefinition template;
- Section Instantiated blocks specifies
the templates and PLCS PSMTemplate objects instantiated by the
FaultModeDefinition template and bound to private
parts of the template;
- Section Default instances species the
instances that have been instantiated in the template. These are used to set
the default value of blocks.
- Section Constraint blocks identifies the
constraint blocks that have been specified in this template;
- Section Example data
provides example XML data sets that have been instantiated in accordance
with this template.
NOTE
An explanation of a template and its specification is provided in
the
Template
overviewThe FaultModeDefinition template describes how to represent a possible fault. Indicates
in what ways a specific ItemDefinition may brake or malfunction, e.g. too low battery
voltage. A fault mode is always related to a component. Note that a fault mode may
be rectified by given task methods.
No templates have been explicitly defined as being related to the FaultModeDefinition template.
NOTE
The FaultModeDefinition template may make reference
to other templates as part of the Parametric Diagram. These are not listed
here.
Figure 1 shows the SysML Block that represents the template. The Block is an abstraction
representing a pattern of templates and PLCS PSMTemplate objects.
The properties, i.e. the SysML Block Part, Reference and Value properties, of the
template's SysML Block are described in the Template
Properties section.
The output ports shown on the template's SysML Block are described in the template output ports section.
The SysML Parametric diagrams for the template Block are shown in template parametric diagram section.
Figure 1 - Template block definition diagram for FaultModeDefinition
The following SysML Part, Reference, and Value properties are defined for this template:
References:
causesUsageRestriction [0..*] (Template: SwedishDefence:
UsageRestrictionDefinition)
Relationship to a usage restriction definition for a type of product that is a recommended
usage restriction for any individual of that type where this fault mode has occurred.
faultOnItem [1] (Template: SwedishDefence:
ItemDefinition)
The ItemDefinition corresponding to an individual part that will be faulty because
of the FaultMode.
concernedLocation [0..*] (Template: SwedishDefence:
PhysicalElement)
Relationship to the physical location of the fault (through the faulty physical structure
element), should the fault mode occur.
rectifyingTask [1..*] (Template: SwedishDefence:
TaskMethod)
Relationship to a TaskMethod that should be used to rectify the fault.
operatingMode [0..*] (Template: SwedishDefence:
OperatingMode)
The operating mode(s) for which the fault mode definition (and associated mean time
between failure) has been defined.
Parts:
faultModeDefinitionDescription [1] (Template: OASIS:
Descriptor)
Description of fault mode.
The reference data used in Template: OASIS:
Descriptor is restricted as follows:
RDL constraint 1:faultModeDescription constraint
The reference data for:
OASIS:Descriptor.classifiedAs -> ExternalOwlClass.class
is restricted to the following class or a subclass:
faultModeDefinitionId [1] (Template: OASIS:
Identification)
Identifies a specific fault mode.
The reference data used in Template: OASIS:
Identification is restricted as follows:
RDL constraint 1:faultModeId constraint
The reference data for:
OASIS:Identification.role -> ExternalOwlClass.class
is restricted to the following class or a subclass:
consequenceDescription [0..1] (Template: OASIS:
Descriptor)
Description of the consequences, should the fault mode occur.
The reference data used in Template: OASIS:
Descriptor is restricted as follows:
RDL constraint 1:consequenceDescription constraint
The reference data for:
OASIS:Descriptor.classifiedAs -> ExternalOwlClass.class
is restricted to the following class or a subclass:
faultCauseDescription [1] (Template: OASIS:
Descriptor)
A description of the cause of the fault mode. Should only be used if the cause itself
is not defined as a fault mode.
The reference data used in Template: OASIS:
Descriptor is restricted as follows:
RDL constraint 1:faultCauseDescription constraint
The reference data for:
OASIS:Descriptor.classifiedAs -> ExternalOwlClass.class
is restricted to the following class or a subclass:
faultDetectionMethod [0..1] (ValueType:
ExternalOwlClass)
Classification of a fault mode definition by the detection method.
The reference data used is restricted to the following set:
meanTimeBetweenFailure [0..1] (Template: SwedishDefence:
PropertyValue)
Mean Time Between Failure is used for simulation and planning. It indicates how often
the fault may occur in the concerned location (MTBF).
The reference data used in Template: SwedishDefence:
PropertyValue is restricted as follows:
RDL constraint 1:meanTimeBetweenFailureText constraint
The reference data for:
OASIS:PropertyValueText.property -> ExternalOwlObject.individual
is restricted to the following individual:
RDL constraint 2:meanTimeBetweenFailureNumerical constraint
The reference data for:
OASIS:PropertyValueNumeric.property -> ExternalOwlObject.individual
is restricted to the following individual:
safetyHazardSeverityLevel [0..1] (ValueType:
ExternalOwlClass)
Qualitative measure of the worst credible mishappening resulting from personnel error;
environmental
conditions; design inadequacies; procedural deficiencies; or system, subsystem or
component failure or malfunction.
The reference data used is restricted to the following set:
The following output ports are defined for this template:
There are no constraints defined for this template.
This section describes the template's Parametric Diagram. The diagram details
the pattern of templates and PLCS PSMTemplate objects that are required to
represent the template FaultModeDefinition.
The public properties, i.e. those visible in the template's SysML block (See Figure 1) are shown on the left of a
Parametric Diagram.
NOTE
Restrictions on the reference data to be set on the public properties is
defined in the
Template Properties section.
The output ports are shown on the right of a Parametric Diagram.
PLCS PSM
objects are shaded khaki and
Templates
are shaded light green in a Parametric Diagram.
Figure 2 - FaultModeDefinition
The following blocks are instantiated by this template and bound to private parts
of the
template as shown in the Parametric Diagram
section:
Private Part Property:
combineDescriptions [1] (Constraint Block: OASIS:Descriptor:
CombineDescriptions)
Private Part Property:
faultModeDefinitionDefinitionClass [0..1] (Template: OASIS:
Classifier)
Private Reference Property:
classFaultModeDefinitionDefinition [0..1] (Block: Ap239Ap233Psm:
ExternalOwlClass)
The following constraint, normally a uniqueness constraint, is
applicable when instantiating the ExternalOwlClass:
rule.Ap239Ap233Psm.ExternalOwlClass.ur1
Constraint: ur1Specification: (OCL2.0)
ExternalOwlClass::allInstances()->isUnique(class)
Private Reference Property:
faultModeDefinition [1] (Block: Ap239Ap233Psm:
StateDefinition)
The following constraint, normally a uniqueness constraint, is
applicable when instantiating the StateDefinition:
rule.Ap239Ap233Psm.ExternalOwlClass.ur1
Constraint: UR1Specification: (OCL2.0)
StateDefinition::allInstances()->isUnique(definition)
Private Part Property:
definition [1] (Block: Ap239Ap233Psm:
ExternalItem)
The following constraint, normally a uniqueness constraint, is
applicable when instantiating the ExternalItem:
rule.Ap239Ap233Psm.ExternalOwlClass.ur1
Constraint: ur1Specification: (OCL2.0)
ExternalItem::allInstances()->isUnique(Sequence{id, source})
Private Part Property:
detectionMethod [0..1] (Template: OASIS:
Classifier)
Private Part Property:
faultOnItemAsgClass [1] (Template: OASIS:
Classifier)
Private Reference Property:
classStateDefinitionToItemDefinitionAssignment [1] (Block: Ap239Ap233Psm:
ExternalOwlClass)
The following constraint, normally a uniqueness constraint, is
applicable when instantiating the ExternalOwlClass:
rule.Ap239Ap233Psm.ExternalOwlClass.ur1
Constraint: ur1Specification: (OCL2.0)
ExternalOwlClass::allInstances()->isUnique(class)
Private Part Property:
concernedLocationAsgClass [0..*] (Template: OASIS:
Classifier)
Private Reference Property:
classStateDefinitionToPhysicalElementAssignment [0..1] (Block: Ap239Ap233Psm:
ExternalOwlClass)
The following constraint, normally a uniqueness constraint, is
applicable when instantiating the ExternalOwlClass:
rule.Ap239Ap233Psm.ExternalOwlClass.ur1
Constraint: ur1Specification: (OCL2.0)
ExternalOwlClass::allInstances()->isUnique(class)
Private Part Property:
severityLevel [0..1] (Template: OASIS:
Classifier)
There are no instances that have been instantiated in this template.
There are no constraint blocks defined in this template.
No example data sets have been provided for this Template.
