基于改进操作模式PID的砷盐除钴过程氧化还原电位控制

doi:10.7964/jdxbgxb201405026

吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (5): 1385-1391.doi: 10.7964/jdxbgxb201405026

基于改进操作模式PID的砷盐除钴过程氧化还原电位控制

伍铁斌^{1, 2}, 阳春华¹, 李勇刚¹, 朱红求¹, 桂卫华¹, 王雅琳¹

1.中南大学信息科学与工程学院,长沙 410083;
2.湖南人文科技学院机电工程系, 湖南娄底 417000

收稿日期:2013-05-06 出版日期:2014-09-01 发布日期:2014-09-01
通讯作者: 阳春华(1965),女,教授,博士生导师.研究方向:复杂系统建模、优化与控制.E-mail:ychh@mail.csu.edu.cn
作者简介:伍铁斌(1981), 男, 博士研究生.研究方向:复杂系统建模、优化与控制.E-mail:wutiebin81@163.com
基金资助:
国家杰出青年科学基金项目 (61025015); 国家“十二五”科技支撑计划项目 (2012BAF03B05) ; 国家自然科学基金项目(61174133, 61273159); 湖南省科技厅计划项目(2014GK3033,2012CK4018); 湖南省教育厅优秀青年项目(14B097).

Improved operational pattern-PID based control of ORP in cobalt removal process using arsenic salt

WU Tie-bin^1,2,YANG Chun-hua¹,LI Yong-gang¹,ZHU Hong-qiu¹ ,GUI Wei-hua¹,WANG Ya-lin¹

1.School of Information Science &Engineering, Central South University, Changsha 410083,China;
2.Department of Electrical and Mechanical Engineering, Hu′nan Institute of Humanities Science and Technology, Loudi 417000,China

Received:2013-05-06 Online:2014-09-01 Published:2014-09-01

摘要/Abstract

摘要： 针对砷盐除钴过程的时变性、非线性和时滞导致氧化还原电位(ORP)稳定控制困难的问题,提出了一种基于改进操作模式的参数自整定的PID控制方法。为提高操作模式匹配的可靠性和快速性,提出一种考虑参数重要性的改进的模糊C-均值聚类算法对操作模式进行聚类;然后采用二步匹配法匹配出相似的操作模式。由于砷盐净化除钴工段系统参数会随时间发生变化,在操作模式重用时对不同时间的操作模式的解(PID参数)赋予不同的模糊加权值,增强了重用结果的可靠性。工业运行结果表明:本文提出的方法能有效降低ORP波动程度,应对复杂的工况变化。

关键词: 自动控制技术, 砷盐除钴, 氧化还原电位, 操作模式

Abstract: To solve the problem of stability control of Oxidation-Reduction Potential (ORP), which is caused by time variation, nonlinearity and time-delay in the process of cobalt removal using arsenic salt, an improved operational pattern based PID parameter tuning method is put forward. In order to improve the reliability and speed of operational pattern matching, first, an improved fuzzy C-mean clustering algorithm for operational pattern clustering is presented. Then, a two-step search method is used to match the similar operational patterns. Finally, since the system parameters of the cobalt removal process vary with time, to improve the reliability of the reused operational pattern solutions, which are PID parameters, different weighting values are assigned to the operational solutions in different times when the operational pattern is reused. A real industrial cobalt removal process control results show that the proposed method can effectively reduce the fluctuation of ORP degree and deal with complicated changing conditions.

Key words: automatic control technology, cobalt removal process using arsenic salt, oxidation-reduction potential, operational pattern

中图分类号:

TP273

伍铁斌, 阳春华, 李勇刚, 朱红求, 桂卫华, 王雅琳. 基于改进操作模式PID的砷盐除钴过程氧化还原电位控制[J]. 吉林大学学报(工学版), 2014, 44(5): 1385-1391.

WU Tie-bin,YANG Chun-hua,LI Yong-gang,ZHU Hong-qiu ,GUI Wei-hua,WANG Ya-lin. Improved operational pattern-PID based control of ORP in cobalt removal process using arsenic salt[J]. 吉林大学学报(工学版), 2014, 44(5): 1385-1391.

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基于改进操作模式PID的砷盐除钴过程氧化还原电位控制

Improved operational pattern-PID based control of ORP in cobalt removal process using arsenic salt

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