Integration of complex Modelica-based physics models and discrete-time control systems: Approaches and observations of numerical performance
Kai Wang, Christopher M. Greiner, John J. Batteh, Lixiang Li · Linköping electronic conference proceedings · 2017
A Modelica-based air conditioning (A/C) system model has been integrated, closed-loop, with related Sfunction-based controls in the Simulink environment.The integration was performed with two different approaches, with a DymolaBlock-based S-function for the A/C model, and as a co-simulation FMU.The simulation performance of the integrated model needs to be sufficiently fast for the purpose of vehicle-level simulations and optimizations.This paper will discuss the integrated modeling of A/C system and associated control systems over a dynamic drive cycle, and the associated numerical performance issues discovered, as well as some approaches taken to increase said performance.