MultiDomainControl Gallery Tutorial TRAIL: SysML+SysPhS vs Modelica By Example in MagicDraw/Cameo SysML [tested with the Wolfram SystemsModeler for Modelica] Section 07. Components [MOST] Slide kind hybrid diagram SysML Block Definition Diagram (BDD) SysML Parametric Diagram
In a control loop, the 'got' (sensed) value is not in necessarily exactly the same as the actual, physical value being controlled! Typically it will be limited to a certain performance accuracy (and an intrinsic accuracy limit due to the number of bits).
In the Webel terminology for a basic control loop there is an 'aim' value (controlled via an actuator) and a 'got' value (a value read from a sensor). The 'got' value is NOT necessarily exactly the same as the actual physical value.
Webel Twin Pattern: A DigitalTwin and PhysicalEntity must both be 'attached' to Sensors and/or Actuators under management of the DigitalTwin before the twinning control loop is fully entered.
In contrast to traditional digital models, digital twins can connect with the physical ‘twin’ they model, changing alongside the physical system via real-time sensors and actuators. Source ANZLIC 2019 - Principles for Spatially Enabled Digital Twins of the Built and Natural Environment in Australia
