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DrModelica – A Web-Based Teaching Environment for Modelica

By Eva-lena Lengquist S, Susanna Monemar, Peter Fritzson and Peter Bunus


This paper states the need for interactive teaching materials for programming languages within the area of modeling and simulation. We propose an interactive teaching material for the modeling language Modelica inspired by existing tutoring systems for Java and Scheme. The purpose of this new teaching material, called DrModelica, is to facilitate the learning of Modelica in a modeling and simulation environment. We have developed two versions of DrModelica, one that is based on Mathematica and another that is intended for the web. With the web version of DrModelica we hope for an increased usage of Modelica. 1. Background The concept of model, system and experiment are central in the area of modeling and simulation. “A model of a system is anything an “experiment ” can be applied to in order to answer questions about that system. ” [1] “A simulation is an experiment performed on a model. ” [1] Tools that are used for modeling and simulation are becoming a powerful aid in the product development process. Using advanced tools and languages to build a model of the product and then simulate its behavior before producing a physical prototype, minimizes the number of errors that can occur during fabrication. This minimization consequently leads to a decrease in the time needed to develop the final product. Furthermore, the earlier the errors are detected, the cheaper the corrections are. Not too long ago in the history of modeling and simulation technology, mathematical models were implemented by hand. The models were usually designed on paper using mathematical notation and the programs written manually in a high-level programming language, like C or Fortran, and stored in text files. Much manual work was needed, making not only maintenance of models expensive, but also the modification of models in order to adapt to new requirements [2]. 2. Modelica Modelica is a new language for hierarchical objectoriented physical modeling which is being develope

Year: 2009
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