Control and Decision Communication Across Heterogeneous Model Types

Feb 16, 2021· Hessam Sarjoughian , Chao Zhang ,

Summary

This workshop presentation explores how continuous, discrete-time, and discrete-event models can communicate within complex cyber-physical systems. It combines DEVS-Suite and OpenModelica through FMI and uses examples from cellular automata and differential-equation models to illustrate how different modeling approaches can represent hybrid system behavior.

Type

Conference paper

Publication

Proceedings of the 15th MODPROD Workshop, 26(15), 15

Abstract

Different classes of dynamical models are commonly used to understand and build mixed computational and physical systems. Cyber-Physical Systems are commonly simulated using hybrid continuous and discrete time modeling methods. As irregular control and decision continue to play more prominent roles due to increasing system complexity, it is useful to make better use of discrete-event modeling. Employing these inherently different classes of modeling theories should lead to higher support for restraining model development and simulation execution complexity. This is because three types of communication can be distinctly formalized for biological, physical, and computational systems. This leads to a more robust use of the simulation protocols and algorithms distinctly suitable for executing continuous, discrete-time, and discrete-event models. The DEVS-Suite and OpenModelica simulators, grounded in the DEVS and Modelica languages and their respective execution engines, are used together with FMI. The DEVS-Suite simulator inherently lends itself to modeling continuous-time event-oriented as well as discrete-time systems. Illustrative examples using Composable Cellular Automata, DEVS, ODE, and PDE are used to illustrate the benefit of modeling varied model structures and behaviors inherent in hybrid systems-of-systems.

Hessam Sarjoughian, Chao Zhang, and Xuanli Lin. “Control and Decision Communication Across Heterogeneous Model Types.” Proceedings of the 15th MODPROD Workshop, vol. 26, no. 15, p. 15, 2021. Linköping University Electronic Press. ISSN 2003-6523. MODPROD record 732.

Workshop presentation in Session 3b: Cyber-Physical Systems, February 3–4, 2021. The publisher provides the presentation slides. A separate paper PDF is not available here.