废水处理中PH值的在线监控系统  

PH Value Online Monitoring Controlling System in the Disposal of Waste Water

作　　者：金海峰[1] 张琳[1] 朱利强[2] 郭俊杰[1] 贺延龄[2] 

机构地区：[1]西安理工大学机械与精密仪器工程学院,陕西西安710048 [2]西安交通大学机械工程学院,陕西西安710049

出　　处：《西安理工大学学报》2004年第2期194-198,共5页Journal of Xi'an University of Technology

摘　　要：根据酸碱滴定曲线本身非线性的特点,提出了分段式非线性变增益PID控制算法,在C++Builder中用软件设计了该PID控制器,通过组态软件(KingView)和该PID控制器的动态数据交换(DDE)以及可编程控制器(PLC)建立了PH值在线监控系统。通过对带有时滞的PH值中和反应过程进行数字仿真研究,控制结果表明该控制系统具有鲁棒性强、响应速度快和控制精度高的优点。According to the inherent nonlinear characteristics of the acid-alkalititration curve,a PID control algorithm with separate-segment nonlinear variable gain is presented,and this PID controller in C++Builder program is designed using software. And then the PH Value Online Monitoring & Controlling System is established via the KingView and DDE of PID controller as well as the PLC. Numerical simulation of PH neutralization process with time delay is performed by using this algorithm.The control results show that this control system exhibit such advantages as good robustness,quick response,and high control accuracy.

关 键 词：PH值控制 PID控制 动态数据交换 可编程控制器 组态软件 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]