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Auflistung nach Autor:in "Nachmann, Imke"

1 - 3 von 3
  • Konferenzbeitrag
    Generating Digital Twin Cockpits for Parameter Management in the Engineering of Wind Turbines
    (Modellierung 2022, 2022) Michael, Judith; Nachmann, Imke; Netz, Lukas; Rumpe, Bernhard; Stüber, Sebastian
    The complexity of wind energy systems combined with an increased trend towards mass customization require the collaboration of many experts to achieve high quality products. Currently, a major issue arises from the lack of data integration among the different tools used during the engineering process which may cause system failures eventually. Existing tools largely do not support automatic detection and indication of erroneous or contradictory parameter values between artifacts of different tools. Employing a model-driven and functional engineering approach enables to establish an integrated toolchain for the management and visualization of engineering artifacts that consume and produce the data. Within this paper, we present an automatic approach to derive an engineering digital twin for the cooperative development and management of engineering artifacts from functional models of the system under development. We evaluate our approach on the example of a hydraulic pump within the cooling system of a wind turbine. The prototype can be coupled with an existing engineering tool ecosystem. The approach enables to exchange the data produced by engineering artifacts according to a functional system model which facilitates the cooperation between different stakeholders throughout the development process.
  • Konferenzbeitrag
    Open-World Loose Semantics of Class Diagrams as Basis for Semantic Differences
    (Modellierung 2022, 2022) Nachmann, Imke; Rumpe, Bernhard; Stachon, Max; Stüber, Sebastian
    Class Diagrams (CDs) model data structures in object-oriented systems and evolve throughout the course of the development process. Analyzing the semantic differences between consecutive versions of a CD is crucial to detect unintended changes of the modeled structures and involves comparing the sets of valid object models of both CDs. Established definitions of CD-semantics employ a closed-world assumption for the validity of object structures, which may not fit all stages of the development process. In this paper, we provide different definitions of CD-semantics and discuss their validity, relationship and limitations in the context of semantic evolution analysis. We show that the closed-world semantics of a CD is a subset of its open-world semantics and how this can be used for analyzing model-evolution. We also consider objects both as simple datastructures, as well as instances of (super-)classes and interfaces, and analyze how these approaches affect refinement and refactoring.
  • Konferenz-Abstract
    Retrofitting Generative Aspects in Existing Applications
    (EMISA 2022, 2022) Gerasimov, Arkadii; Michael, Judith; Nachmann, Imke; Netz, Lukas; Rumpe, Bernhard; Varga, Simon