IFC 4.3.2.20251031 (IFC4X3_ADD2) under development

4.1.5.2 Control Flow

控制元素（如传感器）监控或控制流动元素（如阀门）的行为，使用此关系来指示控制流的逻辑行为。

下图展示了应用此概念时使用的通用类和关系。 此外，概念可能对常见或标准化的行业实践和场景具有特殊意义。对于这些特定的使用场景，下表展示了用户可采用的推荐通用使用模式列表。

G <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcDistributionControlElement.htm'>IfcDistributionControlElement</a> IfcDistributionControlElement 1. GlobalId [1:1] 2. OwnerHistory [0:1] 3. Name [0:1] 4. Description [0:1]      HasAssignments [0:?]      Nests [0:1]      IsNestedBy [0:?]      HasContext [0:1]      IsDecomposedBy [0:?]      Decomposes [0:1]      HasAssociations [0:?] 5. ObjectType [0:1]      IsDeclaredBy [0:1]      Declares [0:?]      IsTypedBy [0:1]      IsDefinedBy [0:?] 6. ObjectPlacement [0:1] 7. Representation [0:1]      ReferencedBy [0:?]      PositionedRelativeTo [0:?]      ReferencedInStructures [0:?] 8. Tag [0:1]      FillsVoids [0:1]      ConnectedTo [0:?]      IsInterferedByElements [0:?]      InterferesElements [0:?]      HasProjections [0:?]      HasOpenings [0:?]      IsConnectionRealization [0:?]      ProvidesBoundaries [0:?]      ConnectedFrom [0:?]      ContainedInStructure [0:1]      HasCoverings [0:?]      HasSurfaceFeatures [0:?]      HasPorts [0:?]      AssignedToFlowElement [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRelFlowControlElements.htm'>IfcRelFlowControlElements</a> IfcRelFlowControlElements 1. GlobalId [1:1] 2. OwnerHistory [0:1] 3. Name [0:1] 4. Description [0:1] 5. RelatedControlElements [1:?] Type 6. RelatingFlowElement [1:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcDistributionControlElement.htm'>IfcDistributionControlElement</a>:AssignedToFlowElement1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRelFlowControlElements.htm'>IfcRelFlowControlElements</a>:RelatedControlElements0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcDistributionFlowElement.htm'>IfcDistributionFlowElement</a> IfcDistributionFlowElement 1. GlobalId [1:1] 2. OwnerHistory [0:1] 3. Name [0:1] 4. Description [0:1]      HasAssignments [0:?]      Nests [0:1]      IsNestedBy [0:?]      HasContext [0:1]      IsDecomposedBy [0:?]      Decomposes [0:1]      HasAssociations [0:?] 5. ObjectType [0:1]      IsDeclaredBy [0:1]      Declares [0:?]      IsTypedBy [0:1]      IsDefinedBy [0:?] 6. ObjectPlacement [0:1] 7. Representation [0:1]      ReferencedBy [0:?]      PositionedRelativeTo [0:?]      ReferencedInStructures [0:?] 8. Tag [0:1]      FillsVoids [0:1]      ConnectedTo [0:?]      IsInterferedByElements [0:?]      InterferesElements [0:?]      HasProjections [0:?]      HasOpenings [0:?]      IsConnectionRealization [0:?]      ProvidesBoundaries [0:?]      ConnectedFrom [0:?]      ContainedInStructure [0:1]      HasCoverings [0:?]      HasSurfaceFeatures [0:?]      HasPorts [0:?]      HasControlElements [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRelFlowControlElements.htm'>IfcRelFlowControlElements</a>:RelatingFlowElement1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcDistributionFlowElement.htm'>IfcDistributionFlowElement</a>:IfcDistributionFlowElement0
Figure 4.1.5.2.A

General Usage

ApplicableEntity
Type
IfcRelFlowControlElements.RelatingFlowElement
IfcActuator IfcFlowController
IfcProtectiveDeviceTrippingUnitIfcProtectiveDevice
IfcSensor IfcDistributionFlowElement
表 4.1.5.2.B

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