Model And Simulation Of Hybrid System Based On Differential Petri Net

Hybrid dynamic systems are composed by continuous subsystems and discrete subsystems.The class of dynamic systems researches the interaction between the two subsystems. Recently,the research of hybrid systems arouses the interests among the many scholara in computer science and control areas. The research results of hybrid system have been made a lot. How to describe the dynamic behavior of hybrid system and how to simulate its model is the hot research of hybrid systems.Petri Nets is an important tool to modeling and analysis asynchronous,concurrent and share resource phenomena. Petri Nets can describe not only the static performance, but also the dynamic performance of a system. Petri Nets have been applied in many fields. Matlab is Mathworks company's outstanding software. It is an important tool to model and analysis the hybrid system. Matlab is not only an intuitive and efficient computer language, but also a scientific computing platform. It provides the mathematics core and advanced graphical tool for data analysis , data visualization and algorithm,and application procedures.The paper introduces the hybrid system and hybrid Petri Net, timed Petri Net, Differential Petri Net .The simulation of P/T system, hybrid Petri Net, timed Petri Net, Differential Petri Net is studied in Matlab. The paper quotes the cooperation inhibit arcs. This arc makes the simple restraint relation of single place to transition extend complex cooperated relation of multiple places to transition, which is introduced to Differential Petri net and is used to build hybrid system with state feedback model. The paper discusses how to simulate the Differential Petri net with cooperation inhibit arcs on the basis of the combination of Stateflow and Simulink. The result illustrates the validitiy of the method.