基于改进Petri网技术的智能操作票系统的应用

在Petri网模型构建的操作票知识库的基础上,利用Petri网的动态行为设计相应推理机制,使推理过程形式化,实现推理过程与规则表示的完全分离,提高了电网调度操作票专家系统的通用性和灵活性;同时,改进后的推理方法通过改变Petri网的运行规则和引入抑制弧,并利用Petri网技术对操作任务进行分解,对子任务建立基本Petri网,简化了推理过程,提高了推理效率,解决了"状态组合爆炸"问题。实例表明,改进Petri网的推理机制可有效提高操作票专家系统的适应性。

Application of Automate Order Sheets System Based on Improved Petri Nets Rules Technology

Based on the Petri nets model constructing knowledge base of order sheets,relevant inference mechanism is designed by using the dynamic behavior of Petri nets,and makes the inference process formalization,so as to separate inference program from rules representation,and to improve the universality and flexibility of the power grid dispatching operation order sheets expert system.At the same time,the improved inference mechanism can simplify the reasoning progress and improve the reasoning efficiency by changing the operation mles of Petri nets and introducing the inhibitory arc,and decomposing the operation tasks based on Petri nets technology to establish the basic Petri net for the subsidiary task.As a result,it can solve the problem of combination state explosion.An applied example is presented to show that the inference mechanism of improved Petri nets can improve adaptability of operation order sheets expert system in a better way.