A Petri Nets approach for hybrid systems modeling
Mircea Adrian Drighiciu, Anca Petrişor, Marius Constantin Popescu · 2009
Abstract— This paper focuses on the modeling of hybrid systems with autonomous commutation of the model generated by a hysteresis phenomenon through a particular Petri Nets structures, called Modified Petri Nets (MPN). The main goal of this approach is to get a formal description language for such hybrid systems, which combines the advantages of a graphical description with the possibility of a transparent visualization, simulation and analysis. Hence, several enhancements were proposed. The first of them combines the classical discrete Petri Net approach and the concept of continuous Petri Nets, having as result a class called Hybrid Petri Nets (HPN). In the second enhancement, the aspect of the system complexity was approached by introducing object oriented concepts, like encapsulation and information hiding. In this way, the resulting Hybrid Object Nets (HON) combines the advantages of Hybrid Petri Nets with those of the object-oriented paradigm. The proposed concepts are illustrated with a case study, which refers to a classical temperature control process in a room, using a thermostat with anticipative resistance.