一种面向对象的Petri网

柔性制造系统属于离散事件动态系统，具有实时、并发、异步等特性，由于Ｐｅｔｒｉ网模型的图形表述和数学描述，使它既可以采用数学分析，又可以通过图形形象地表述出离散动态系统，故广泛应用于制造过程动态行为建模与分析。而面向对象建模与设计是一种围绕真实世界的概念来组织模型的全新的思考问题方式，面向对象的模型能帮助对问题的理解，有助于同领域专家通讯交流。本文在Ｐｅｔｒｉ网基础上，引入面向对象技术，提出了一种面向对象Ｐｅｔｒｉ网（ＯＰＮ）模型，并以企业中的一项生产活动——二次电源生产过程为实例，建立了描述这一活动系统的完整的ＯＰＮ模型，真实地反映了系统的动态特性，从而为制造过程建模和分析提供了一个更为有效的工具

An Approach to the Object-Oriented Petri Net

Real time flexible manufacturing system, which is concurrent and asynchronous in nature, belong to discrete event dynamic system (DEDS). Petri Net have been widely used to model and analyse its dynamic behaviours due to the characteristics of the graphical and mathematical analysis of the control logic, which makes Petri Net(PN) possible to describe the DEDS both in mathematical and graphical tools. The modeling and designing of Object oriented(OO)is a firenew mode of thinking to organize models about the concept of the true world. The modeling of OO(OOM)can help us to understand more clearly and to communicate with experts in the same field more easily.By the introduction of OO,a model for the Object oriented Petri Net (OPN) is developed on the basis of PN in this paper. As an example, a complete OPN model for describing production of power supply in an enterprise is developed, which can reflected the dynamic behaviors of the system more really,thus the more effective tool for modelling and analyse of manufacturing process is provided.