Evaluating the performance of control schemes for hybrid systems A Practical Approach JAROSLAV HLAVA * AND BOHUMIL ŠULC**

Abstract:- Hybrid systems are now one of the most important research topics in the field of system and control theory. They undoubtedly pose many interesting challenges from the purely theoretical point of view, however, the ultimate motivation for their study is practical. There many industrial plants whose mathematical models are hybrid, i.e. exhibit nontrivial interactions of continuous valued and discrete valued variables and elements. Despite this practical motivation, most papers on the control of hybrid systems are limited to theoretical aspects of control design and they are concluded with simulational experiments at best. This paper proposes a more practical alternative. It describes a laboratory scale plant that is designed in such a way that it exhibits most of the hybrid phenomena typical of process control applications. The paper includes a detailed description of the plant structure together with its mathematical model. Further, it focuses on hybrid control experiments that can be performed with this plant in order to test and evaluate various hybrid control schemes