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Figure 9-6 is a fragment of the ibd:PwrSys diagram used in the HybridSUV Sample Problem in Annex D. (The complete diagram is in Figure D.19.)

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OMG Systems Modeling Language (SysML) 1.6
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About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes
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HSUV sample problem
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Figure 9-6 is a fragment of the ibd:PwrSys diagram used in the HybridSUV Sample Problem in Annex D. (The complete diagram is in Figure D.19.)
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The ecu:PowerControlUnit part has three ports with required and provided features, each connected to a port of another part. Each of the ports in this example is typed by a block specifying provided and required features available via connectors ...
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For example, the ICE block specifies the provided operations setMixture and setThrottle, the provided properties RPM, temperature, and isKnocking, and required property isControlOn, as shown in Figure D.20. This block types the ctrl port of ...
This means the provided features of ICE are provided by the ctrl port of InternalCombustionEngine, and required by the ice port of PowerControlUnit, while the required features of ICE are required by the ctrl port of InternalCombustionEngine, and provided
Since the ecu:PowerControlUnit part and ice:InternalCombustionEngine part are connected via these ports, the ecu:PowerControlUnit part may invoke setThrottle and setMixture on the ice:InternalCombustionEngine part via its ice port, across the connector...
By invoking these operations, the PowerControlUnit can set the throttle and mixture of the InternalCombustionEngine. The PowerControlUnit can also read properties of the InternalCombustionEngine across the connector to find out the rpm, temperature, ...
Inversely, the InternalCombustionEngine can read the isControlOn property of the PowerControlUnit across the connector to determine if the unit is still operating, and possibly shut down if it is not.
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