Class Ifc4x1::IfcActuator

Nested Relationships

This class is a nested type of Struct Ifc4x1.

Inheritance Relationships

Base Type

Class Documentation

class Ifc4x1::IfcActuator : public Ifc4x1::IfcDistributionControlElement

An actuator is a mechanical device for moving or controlling a mechanism or system. An actuator takes energy, usually created by air, electricity, or liquid, and converts that into some kind of motion.

HISTORY New entity in IFC2x4

Type Use Definition IfcActuator defines the occurrence of any actuator; common information about actuator types is handled by IfcActuatorType. The IfcActuatorType (if present) may establish the common type name, usage (predefined type), properties, materials, ports, composition, assignments, and representations. The IfcActuatorType is attached using the IfcRelDefinesByType objectified relationship and is accessible by the IsTypedBy inverse attribute. If the IfcActuatorType has ports or aggregated elements, such objects are reflected at the IfcActuator occurrence using the IfcRelDefinesByObject relationship.

Property Use Definition The property sets relating to this entity are defined by IfcPropertySet and attached by the IfcRelDefinesByProperties relationship. They are accessible by the IsDefinedBy inverse attribute. Property sets may also be specified at the IfcActuatorType, defining the common property data for all occurrences of the same type. They are then accessible by the IsTypedBy inverse attribute pointing to IfcActuatorType.HasPropertySets. If both are given, then the properties directly defined at IfcActuator override the properties defined at IfcActuatorType. Refer to the documentation at the supertype IfcDistributionControlElement and ancestors for inherited property set definitions. The following property set definitions are applicable to this entity: (All Types)

Pset_ActuatorPHistory (PSET_PERFORMANCEDRIVEN) Pset_ActuatorTypeCommon (PSET_TYPEDRIVENOVERRIDE) Pset_ActuatorTypeLinearActuation (PSET_TYPEDRIVENOVERRIDE) Pset_ActuatorTypeRotationalActuation (PSET_TYPEDRIVENOVERRIDE)


Pset_ActuatorTypeElectricActuator (PSET_TYPEDRIVENOVERRIDE)


Pset_ActuatorTypeHydraulicActuator (PSET_TYPEDRIVENOVERRIDE)


Pset_ActuatorTypePneumaticActuator (PSET_TYPEDRIVENOVERRIDE)

Quantity Use Definition The quantities relating to this entity are defined by IfcElementQuantity and attached by the IfcRelDefinesByProperties relationship. They are accessible by the IsDefinedBy inverse attribute. The following base quantities are defined and shall be exchanged with the IfcElementQuantity.Name = ‘BaseQuantities’. Other quantities, being subjected to local standard of measurement, may be defined with another string value assigned to Name. In this case a valid value for MethodOfMeasurement shall be provided.


Material Use Definition The material of the IfcActuator is defined by IfcMaterialConstituentSet or as a fallback by IfcMaterial, and attached by the RelatingMaterial attribute on the IfcRelAssociatesMaterial relationship. It is accessible by the HasAssociations inverse attribute. Material information can also be given at the IfcActuatorType, defining the common attribute data for all occurrences of the same type. The following keywords for IfcMaterialConstituentSet.MaterialConstituents[n].Name shall be used:

Casing: Material from which the casing is constructed.

Connection Use Definition The IfcActuator may be connected to other objects as follows using the indicated relationship:

IfcFlowController (IfcRelFlowControlElements): Indicates a connected valve, damper, or switch controlled by the actuator.

Port Use Definition The distribution ports relating to the IfcActuator are defined by IfcDistributionPort and attached by the IfcRelConnectsPortToElement relationship. If the actuator occurrence is defined by IfcActuatorType, then the port occurrences must reflect those defined at the IfcActuatorType using the IfcRelDefinesByObject relationship. Ports are specific to the IfcActuator PredefinedType as follows indicated by the IfcDistributionPort Name, PredefinedType, and FlowDirection:

Input (SIGNAL, SINK): Receives signal.

Public Types

typedef IfcTemplatedEntityList<IfcActuator> list

Public Functions

bool hasPredefinedType() const

Whether the optional attribute PredefinedType is defined for this IfcActuator.

::Ifc4x1::IfcActuatorTypeEnum::Value PredefinedType() const
void setPredefinedType(::Ifc4x1::IfcActuatorTypeEnum::Value v)
const IfcParse::entity &declaration() const
IfcActuator(IfcEntityInstanceData *e)
IfcActuator(std::string v1_GlobalId, ::Ifc4x1::IfcOwnerHistory *v2_OwnerHistory, boost::optional<std::string> v3_Name, boost::optional<std::string> v4_Description, boost::optional<std::string> v5_ObjectType, ::Ifc4x1::IfcObjectPlacement *v6_ObjectPlacement, ::Ifc4x1::IfcProductRepresentation *v7_Representation, boost::optional<std::string> v8_Tag, boost::optional<::Ifc4x1::IfcActuatorTypeEnum::Value> v9_PredefinedType)

Public Static Functions

const IfcParse::entity &Class()