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炼钢连铸过程是一个复杂而又典型的混合动态系统，但现有的混合动态系统理论难以对此进行直接分析和综合。文章提出一种区段赋时弧有色Ｐｅｔｒｉ网，其库所输出弧上标注的是以颜色为变量的时间区间函数，并从抽象混合动态系统的角度给出了这种Ｐｅｔｒｉ网的变迁规则。利用模块化思想，以区段赋时弧有色Ｐｅｔｒｉ网为工具，说明了如何建立一个电炉炼钢连铸过程的实时调度模型。基于这一模型，既可以仿真整个生产过程，又可以分析和综合实时调度策略。
Steelmaking and continuous casting process is a complex and typical hybrid dynamic system, but the existing hybrid dynamic system theory is difficult to directly analyze and synthesize. In this paper, an arc-colored colored Petri net with section-time is proposed. The output arc of the library is marked with time-interval function with color as a variable, and the transition rule of this Petri net is given from the viewpoint of abstract hybrid dynamic system. Utilizing the modular idea, the section-time arc-colored Petri net is taken as a tool to illustrate how to set up a real-time scheduling model for EAF steelmaking and continuous casting process. Based on this model, we can not only simulate the whole production process, but also analyze and synthesize the real-time scheduling strategy.