The need of modeling: Experience from the Samothraki Summer University

To study, analyse and control systems we need to know them very well and therefore to have a mathematical model that describes them, which can be used either as a simulator or as a control model. A simulator-model is complex in order to describe as accurate and realistic as possible the real system behavior. A control model takes a simpler representation but always taking into account the essence of the real system and its characteristic behavior. Therefore, modeling techniques can achieve models in a simple or complex manner depending on the objective.