NONLINEAR SELF-TUNING REGULATOR FOR PH SYSTEMS

被引：17
|
作者：
LEE, SD
LEE, JT
PARK, SW
机构：
[1] KOREA ADV INST SCI & TECHNOL,DEPT CHEM ENGN,TAEJON 305701,SOUTH KOREA
[2] KYUNGPOOK NATL UNIV,DEPT CHEM ENGN,TAEGU 702701,SOUTH KOREA
来源：
AUTOMATICA | 1994年 / 30卷 / 10期
关键词：
PH CONTROL; ADAPTIVE CONTROL; NEUTRALIZATION; NONLINEAR SYSTEM;
D O I：
10.1016/0005-1098(94)90097-3
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A nonlinear self-tuning regulator for controlling the pH value of weak acid streams by a strong base is proposed. The nonlinear state equations describing the neutralization process are transformed so that we can estimate the unknown parameters, the concentration and the dissociation constant of the influent weak acid, via the recursive least squares method with a variable forgetting factor. Then we apply the one-step-ahead control law. Simulation results show that the regulator provides good performance for realistic situations such as multicomponent weak acid and strong base systems.
引用
收藏
页码：1579 / 1586
页数：8
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