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本文介绍了面向对象Ｐｅｔｒｉ网（ＯＯＰＮ）方法，给出了ＯＯＰＮ的基本定义和图形表示，讨论了ＯＯＰＮ的特性和子网细化方法。结合软件设计开发周期，给出了ＯＯＰＮ在软件工程中的应用方法及步骤。给出了利用ＯＯＰＮ方法进行柔性制造系统（ＦＭＳ）控制软件设计开发的应用实例，并给出了部分对象类和应用程序。利用ＯＯＰＮ方法可以对软件系统设计开发过程进行有效的控制，保证软件系统的可靠性和规范化水平。
This paper introduces the object-oriented Petri net (OOPN) method, gives the basic definition and graphical representation of OOPN, and discusses the characteristics of OOPN and subnet refinement methods. Combined with the software design and development cycle, the application methods and steps of OOPN in software engineering are given. The application of OOPN method to the design and development of flexible manufacturing system (FMS) control software is given, and some object classes and applications are given. The OOPN method can effectively control the software system design and development process and ensure the reliability and standardization of the software system.