关键词: Petri网, 仿真, 可重构加工系统, 控制, 离散事件系统, 软件开发

Abstract: Motivated by the demand for Petri net software tools for control of discrete event systems, a Petri net-based discrete event simulation and control software tool is designed and developed. By analyzing the requirements of discrete event simulation and control, the main functions and objectives of the software tool are established. The architecture of software tool is designed accordingly. Subsequently, several key techniques for the software development are researched including proposing of control Petri nets together with design of their basic classes, save and read of Petri net models, Petri net-based simulation and control, and networked software construction in the Client/Server mode. Finally, the Petri net-based discrete event simulation and control software tool is developed, which not only possesses the functions of Petri net modeling and analysis, but also is capable of implementing Petri net-based control and simulation of discrete event systems through networks. Application result of the software tool on a reconfigurable machining system test-bed shows that the software tool is valid and practical.

Key words: Control, Discrete event systems, Petri nets, Reconfigurable machining systems, Simulation, Software development