间歇式化工系统的Petri网优化调度与控制方法  

Optimal scheduling and control of batch chemical processes with Petri nets

作　　者：周家忠[1] 罗继亮[1] 詹瑜坤[1] 

机构地区：[1]华侨大学信息科学与工程学院,福建厦门361021

出　　处：《控制理论与应用》2016年第6期809-815,共7页Control Theory & Applications

基　　金：国家自然科学基金项目(61573158);福建省自然科学基金项目(2014J01241);福建省高等学校新世纪优秀人才支持计划项目(11FJRC01);福建省高校杰出青年科研人才培育计划项目(JA10004)资助~~

摘　　要：为了解决复杂间歇式化工系统的优化调度和控制问题,提出了一种基于Petri网的优化调度与控制方法:首先,根据加工工艺,建立加工过程的赋时Petri网模型;其次,根据间歇式化工生产对象的拓扑结构,在该赋时Petri网模型中引入阀门系统的网结构,从而获得系统的受控Petri网模型;最后,利用可达图来计算加工时间最短的控制策略,借助网结构信息,得到了控制策略的阀门控制矩阵,并用一个示例演示验证了本文方法.A method based on Petri nets is proposed to schedule and control a batch chemical system. First, an operational process is modeled as a P-timed Petri net according to its recipe. Second, a net structure is introduced in the P-timed Petri net to model a valve according to the topological structure of a batch chemical system. Consequently, a controlled Petri net model is obtained for a batch chemical system. Finally, via the reachability tree of this controlled Petri net, a method is proposed to calculate an optimal control strategy that makes the processing time shortest. Further, a control matrix for valves is calculated based on the structure of the controlled Petri net. The proposed methods are illustrated by a typical batch system.

关 键 词：PETRI网 优化调度 控制 间歇式化工 可达图 

分 类 号：TP301.1[自动化与计算机技术—计算机系统结构]