Mode Initialization when Simulating Switched Bond Graphs
Krister Edström · 1997
When simulating hybrid systems using switched bond graphs, the initialization of new modes is made by using a generalization of the principle of momentum conservation. This information is easily found from the bond graph. Furthermore, impulses due to structural changes in the system can be found with a correct initialization and with a correct treatment of sources with causal conflicts. Keywords: Modeling, simulation, hybrid systems, bond graphs, initialization, structural changes 1 Introduction This paper deals with the problem of simulating hybrid systems. More particularly, it deals with initializations of new modes and detection of discontinuities that appear due to changes in the structure of the model when changing modes. The tool used for describing the hybrid system is the switched bond graphs. It is a tool for making graphical physical models of hybrid systems. In addition to the principle of energy conservation used when describing a system with a bond graph, a generalizati...