Towards a Holistic and Functional Model-Based Design Method for Mechatronic Cyber-Physical Systems

Journal of Computing and Information Science in Engineering, vol. 23

Abstract

Abstract Engineering cyber-physical systems (CPS) is complex and time-consuming due to the heterogeneity of the involved engineering domains and the high number of physical and logical interactions of their subsystems. Model-based systems engineering (MBSE) approaches tackle the complexity of developing CPS by formally and explicitly modeling subsystems and their interactions. Newer approaches also integrate domain-specific models and modeling languages to cover different aspects of CPS. However, MBSE approaches are currently not fully applicable for CPS development since they do not integrate formal models for physical and mechanical behavior to an extent that allows to seamlessly link mechanical models to the digital models and reuse them. In this paper, we discuss the challenges arising from the missing integration of physics into MBSE and introduce a model-based methodology capable of integrating physical functions and effects into an MBSE approach on a level where detailed physical effects are considered. Our approach offers a fully virtual, model-based development methodology covering the whole development process for the development of CPS. Evaluating this methodology on a real automotive use case demonstrates benefits regarding virtual development and functional testing of CPS. It shows potentials regarding automated development and continuous integration of the whole CPS including all domains. As an outlook of this paper, we discuss potential further research topics extending our development workflow.

Authors 8

1. Gregor Höpfner corresponding Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Institute for Machine Elements and Systems Engineering, , Schinkelstraße 10, 52062 Aachen , Germany

2. Imke Helene Nachmann Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Software Engineering, , Ahornstraße 55, 52062 Aachen , Germany

3. Thilo Zerwas Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Institute for Machine Elements and Systems Engineering, , Schinkelstraße 10, 52062 Aachen , Germany

4. Joerg Berroth Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Institute for Machine Elements and Systems Engineering, , Schinkelstraße 10, 52062 Aachen , Germany

5. Jens Kohl

   BMW (Germany) · BMW Group (Germany)

   Affiliation as printed

   BMW Group AG , Knorrstraße 147, 80788 Munich , Germany

6. Christian Guist

   BMW (Germany) · BMW Group (Germany)

   Affiliation as printed

   BMW Group AG , Knorrstraße 147, 80788 Munich , Germany

7. Bernhard Rumpe⋆ Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Chair of Software Engineering, , Ahornstraße 55, 52062 Aachen , Germany

8. Georg Jacobs Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Institute for Machine Elements and Systems Engineering, , Schinkelstraße 10, 52062 Aachen , Germany