Web-Based Digital Twin
Fig
. 12 : Web-based user interface for the FMU simulation of a stepper motor .
The web-based digital twin can also include different types of simulations using FMI . For the laser plotter , for example , the behavior of the stepper motors used is relevant . The modelling and simulation tool MATLAB / Simulink was used to create a suitable simulation . Subsequently , the simulation was exported as a stand-alone FMU with solver . Variables were defined , which serve the user as input parameters for the simulation . The simulation runs on an external server and is integrated into the web-based digital twin using HTTP . After successfully adding a simulation , the web-based digital twin creates a simulation interface automatically , as shown in Fig . 12 . An input field displays the default start value , which can be adjusted by the user . By pressing the start button the digital twin sends the corresponding data to a simulation server via an HTTP request to call the corresponding simulation function . Fig . 13 shows the simulated steps of the stepper motor over time . The simulations can thus be used , for example , to analyze the behavior of individual components under specific conditions .
Fig . 13 : Simulation results of an FMU stepper motor simulation on an external simulation server . - 14 - March 2021