Linear Analysis Approach for Modelica Models

Abstract

This paper is dedicated to the Linear Analysis of dynamic systems represented by Modelica models. The simulation of dynamic systems helps the engineer in his design activities giving him a better understanding of the system he is in charge. Additionally to time-domain simulations, frequency domain analysis provides a complementary view of the systems. This paper gives a general overview of the Linear Analysis methods that can be performed on Modelica models using the existing facilities in LMS Imagine .Lab platform. It highlights the use of Eigenval-ues, Modals Shapes, Transfer Functions or Root Lo-cus to fully understand the intrinsic dynamic behaviors of the systems, including non-linear systems. Different multi-physics examples show how these tools can be used practically.