Modelica | an International Effort to Design the next Generation Modeling Language

A new language called Modelica for physical modeling is developed in an international e ort. The main purpose is to make it easy to exchange models and model libraries. The design approach builds on non-casual modeling with true equations and the use of object-oriented constructs to facilitate reuse of modeling knowledge. There are already several modeling language based on these ideas available from universities and small companies. There is also signi cant experience of using them in various applications. The aim of the Modelica e ort is to unify the concepts and design a new uniform model language for model representation. The paper describes the e ort and gives an overview of Modelica.