自抗扰pH控制方法及其应用研究  

The application of auto-disturbance-rejection pH control for chemical process control

作　　者：邢振民[1] 李波[1] 李强[1] 曾智刚[2] 

机构地区：[1]山东济宁职业技术学院,山东济宁272137 [2]广州华南理工大学工业装备与控制工程学院,广东510641

出　　处：《微计算机信息》2008年第18期270-271,288,共3页Control & Automation

摘　　要：本文介绍一种自抗扰pH控制方法。针对化工过程中pH值中和具有严重非线性,因而控制十分困难。当未知非线性系统中存在强干扰时,自抗扰控制器能表现出很强的适应性和鲁棒性.为此,采用二阶自抗扰控制器来控制这一复杂非线性过程,并结合工程实际和理论分析,对pH值中和过程进行仿真,相比传统PID控制,能达到理想控制效果。This paper introduces an auto-disturbance-rejection pH control method, for pH neutralization might be very difficult to control due to their highly nonlinear nature. An Auto-Disturbance-Rejection-Controller （ADRC） can be used for controlling a broad range of uncertain systems in the presence of strong disturbances, and still exhibits excellent adaptability and robustness. The paper address the problem of the utilization of a two-order ADRC for the abstract nonlinear process mentioned above. Simulation studies for pH neutralization substantiate that the ADRC controller can provide much better set-point tracking and disturbance rejection than traditional PID controllers.

关 键 词：PH控制 自抗扰控制器 PID控制 

分 类 号：TP206[自动化与计算机技术—检测技术与自动化装置]