Temporal Decoupling of Weakly Coupled Systems in Hybrid Co-Simulation
Erik ROSENLUND, Robert HÄLLQVIST, Robert BRAUN, Petter KRUS
Abstract. Cyber-Physical Systems—such as aerospace systems—increasingly rely on multi-physics co-simulation, yet data exchange and orchestration strategies across black-box FMUs can erode accuracy and wall-time performance. This work exploits physical and logical delays—captured through Transmission Line Modeling insights and Logical Execution Time semantics—to segment model coupling graphs into temporally independent sub-system groups. Benchmarks of weakly coupled groups show that an increased macro time step, while respecting signal delays, can preserve system dynamics while reducing model invocations and enabling parallelization without breaking causality.
Keywords
Cyber-Physical Systems, Parallel Co-Simulation, Functional Mock-up Interface, Information/Temporal Decoupling, Directed Acyclic Graph Scheduling, Logical Execution Time, Transmission Line Modeling
Published online 7/20/2026, 7 pages
Copyright © 2026 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Erik ROSENLUND, Robert HÄLLQVIST, Robert BRAUN, Petter KRUS, Temporal Decoupling of Weakly Coupled Systems in Hybrid Co-Simulation, Materials Research Proceedings, Vol. 69, pp 1530-1536, 2026
DOI: https://doi.org/10.21741/9781644904251-268
The article was published as article 268 of the book CEAS – AIDAA Conference 2025
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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