Multiphysics Acausal Modeling and Simulation of Satellites using a Modelica Library

Abstract

The multiphysics modeling has a great importance when a complex space system (as a satellite) is considered. Indeed, it is necessary to analyse how the system’s behavior is affected by the space environment or by on board failures. In this paper, the Modelica Library is used to hierarchically build and connect the main subsystems that can be found in a traditional satellite. Specifically, the modeling and simulation of the entire system is carried out in the Dymola environment. Finally, the FMI is applied to simulate in Dymola some specific satellite models/logics created with higher fidelity in the Matlab/Simulink  domain.