Simulating Modelica models with a Stand-Alone Quantized State Systems Solver

FEDERICO BERGERO ; XENOFON FLOROS ; JOAQUÍN FERNÁNDEZ; ERNESTO KOFMAN; FRANÇOIS CELLIER

Munich

Conferencia; 9th International Modelica Conference; 2012

Modelica Association and DLR - Robotics and Mechatronics Center

This article describes an extension of the OpenMod- elica Compiler that translates regular Modelica mod- els into a simpler language, called Micro?Modelica (μ?Modelica), that can be understood by the re- cently developed stand?alone Quantized State Sys- tems (QSS) solvers. These solvers are very efficient when simulating systems with frequent discontinu- ities. Thus, strongly discontinuous Modelica models can be simulated noticeably faster than with the stan- dard discrete time solvers. The simulation of two discontinuous models is analyzed in order to demonstrate the correctness of the proposed implementation as well as the advantages of using the QSS stand-alone solvers.