基于构件的Petri-net工作流建模方法

Component-based Petri-net Workflow Modeling Method

Petri-net是一种行之有效的工作流建模方法。随着工作流的发展,用Petri-net描述的工作流模型越来越复杂,越来越庞大。针对此问 题,该文引入构件的思想改善现有的Petri-net建模方法,利用构件的封装性、多态性、可复用性等特点,来增强Petri-net的建模能力,简化 Petri-net的模型结构。同时给出了两个模型实例。研究结果表明,与传统的Petri-net模型相比,该建模方法在提高描述能力、降低模型复杂 度、提高系统柔性方面有明显优点。

Petri-net is a useful workflow modeling method. With the development of workflow , workflow model describing with Petri-net is more and more complex and enormous. In order to solve the problem, a new component-based Petri-net workflow modeling method is put forward. Because component has many advantages , such as encapsulation, polymorphism, reuse and so on , the proposed method strengthens the capability of Petri-net model and simplifies the structure of Petri-net model. And two examples arc presented. Research results show that compared with traditional Petri-net model, the proposed method has significant advantages in enhancing description ability, reducing model complexity, and improving system flexibility.