A Bond-Graph Metamodel:

Abstract

Composability and modularity in relation to physics are useful properties in the development of cyber-physical systems that interact with their environment. The bond-graph modeling language offers these properties. When systems structures conform to the bond-graph notation, all interfaces are defined as physical "power ports" which are guaranteed to exchange power. Having a single type of interface is a key feature when aiming for modular, composable systems. Furthermore, the facility to monitor energy flows in the system through power ports allows the definition of system-wide properties based on component properties. In this paper we present a metamodel of the bond-graph language aimed to facilitate the description and deployment of software components for cyber-physical systems. This effort provides a formalized description of standardized interfaces that enable physics-conformal interconnections. We present a use-case showing that the metamodel enables composability, reusability, extensibility, replaceability and independence of control software components.This research has received funding from the RobMoSys project (EU project No. 732410) under the subproject EG-IPC. https://robmosys.eu/eg-ipc/.

Hierarchical semantic composition of biosimulation models using bond graphs

“…However, the expansion of biological models to bridge between cells and organs demands reusable and comprehensible existing models to avoid the repetitive work of recreating them [ 3 , 4 ]. Constructing a complex model by composing various well-defined sub-models (modularisation) helps researchers handle this complexity [ 5 ], facilitates model composition and promotes model sharing [ 6 – 8 ].…”

“…The bond graph description of a biophysical model produces components that have physical and biophysical interpretations, assisting a better understanding of the system. Once each module is represented in bond graph form, correct coupling between modules is straightforward, and the resultant model is itself a bond graph and hence physically consistent [ 6 ].…”