In current development processes, various methodologies and supporting software suites are used for systems engineering and system simulation, mostly side by side throughout the design lifecycle. So far, requirements management and system level modeling have not been included in multi-physics simulation tools, nor are the systems engineering tools capable of integrating with physical simulations. For an effective Model Based Systems Engineering methodology, it is imperative to close this gap.
This paper describes the successful joint effort by IBM and ITI to develop a hybrid simulation platform with the goal of providing SysML extensions for hybrid simulation modeling in a systems engineering context. Functional Mockup Interface (FMI) was chosen for the integration of heterogeneous behavioral models (SysML™, Modelica®, Simulink), since it is arguably the most flexible standardised interface for establishing tool coupling. In the first of two established workflows, a SysML behavioral block is exported to SimulationX. Workflow two deals with the export of the SysML hybrid composition to SimulationX.
The result of this joint project is a reliable and stable open virtual verification framework saving time and costs by closing the gap between systems engineering models and various domain-specific models. The integration of physical plant, control modeling and simulation enables various workflows that allow for a versatile collaboration between hybrid simulation and systems engineering, including IP protection for embedded sub-contractor models. Furthermore, it is possible to support a full lifecycle of hybrid system design (modeling, code generation, simulation, verification) by leveraging IBM Rational platform.