自抗扰pH控制及其在化工过程控制中的应用  

The Application of Auto-disturbance-rejection pH Control in Chemical Process Control

作　　者：曾智刚[1] 

机构地区：[1]华南理工大学自动化学院,广东广州510641

出　　处：《电子科技》2009年第6期23-25,28,共4页Electronic Science and Technology

摘　　要：自动化学院化工过程中pH值中和具有严重非线性,因而控制十分困难。基于此文中介绍一种自抗扰pH控制方法。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值的中和过程进行仿真,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 its highly nonlinear nature. An Auto-Disturbance-Rejection-Controller （ADRC） can be used to control a broad range of uncertain systems in the presence of strong disturbances, and still exhibits excellent adaptability and robustness. The paper addresses 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 化工过程 自抗扰控制器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]