基于初馏塔温度控制的模糊控制器设计  

Design of Fuzzy Controller Based on Primary Tower Temperature Control

作　　者：胡珊珊[1] 翁惠辉[1] 王进修[2] 

机构地区：[1]长江大学电子信息学院,荆州434023 [2]华北油田公司采油工程研究院,任丘062552

出　　处：《自动化与仪表》2014年第6期33-36,共4页Automation & Instrumentation

摘　　要：初馏塔的内部机理非常复杂,对于整个过程还缺乏精确的数学描述,塔顶温度存在大滞后和时变性,它的波动直接影响初馏段产品的质量下降。现阶段采用的常规PID控制算法无法满足现场工艺要求,该文在原有S7-400H冗余控制系统基础上,设计了一种基于Profibus-DP总线的模糊控制器,并详细介绍了模糊控制器的设计与实现。通过后期投产表明,该控制器控制精度高,很大程度上提高了初馏段的产品质量,为大滞后和时变性变量的控制提供了一种切实、有效的解决方案。The internal mechanism of primary tower was very complex,there was lack of accurate mathematical de- scription about the whole process,overhead temperature has big lag and time-varying,its fluctuation directly influence the quality of primary section decline. The conventional PID control algorithm can not meet the technological requirements of the site. In this paper,based on the S7-400H redundancy control system design a kind of Profibus-DP bus fuzzy controller,and details the design and implementation of the fuzzy controller. Practice shows that the controller has high control precision,greatly improve product quality of primary section provide a practical,effective solutions for control big Iag and time-varying degeneration.

关 键 词：初馏塔 PROFIBUS-DP 模糊控制 dsPIC30 F6014A 冗余系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]