Home // SIMUL 2023, The Fifteenth International Conference on Advances in System Simulation // View article

LookAhead - A New Approach for Event Handling in Co-Simulation by Predicting State Events

Authors:
Felix Tischer
Simon Genser
Daniel Watzenig
Martin Benedikt

Keywords: co-simulation, non-iterative co-simulation, hybrid simulation, event handling

Abstract:
Hybrid systems consisting of discrete state events in otherwise continuous systems pose a significant challenge in co-simulation, as these events can lead to large errors depending on when they occur during a coupling time step. The coupling step size thus needed to correctly simulate state events can be significantly smaller than for the continuous part, resulting in can overall reduced coupling step size and longer and more expensive simulations. By dynamically adapting the coupling step size whenever an event is imminent, hybrid co-simulation can be improved significantly when compared to fixed-step co-simulation algorithms. This can be accomplished by predicting upcoming state events in advance. In an example simulation, this improves precision by a factor of 30 and decreases the number of coupling steps by a factor of 7.

Pages: 34 to 39

Copyright: Copyright (c) IARIA, 2023

Publication date: November 13, 2023

Published in: conference

ISSN: 2308-4537

ISBN: 978-1-68558-102-2

Location: Valencia, Spain

Dates: from November 13, 2023 to November 17, 2023