基于控制模型的氨氮测量系统的研究与设计  

Research and design of ammonium measuring system based on the control model

作　　者：秦刚[1] 杨珊珊[1] 刘永红[2] 陈中孝[1] 宋晓茹[1] 

机构地区：[1]西安工业大学电子信息工程学院,陕西西安710021 [2]西安工程大学环境与化学工程学院,陕西西安710048

出　　处：《现代化工》2015年第12期158-161,共4页Modern Chemical Industry

基　　金：陕西省科学技术研究发展计划项目(2014K05-06);陕西省科技厅工业攻关项目(2014K05-44)

摘　　要：系统辨识是现代控制领域的一个重要分支,在航空航天以及工业控制领域拥有广泛应用。将该方法应用于污水处理领域,介绍了一种基于控制模型的氨氮测量系统及测量方法。具体使用不同浓度的氨氮阶跃信号作用系统,产生不同输出信号,通过对系统测量机理深入研究得到系统的控制模型,采用递推最小二乘算法对系统的结构参数进行辨识。实验结果表明,该方法测量过程简单,误差较小,可用于水体氨氮含量的在线检测。System identification is a very important branch of the modem control field. It has been widely used in the aviation, the aerospace and the industrial automatic control domain. In this paper, system identification method is applied in the sewage dispose field. An ammonium measuring system and method based on control model is introduced. The ammonium measuring system receives different concentrations of ammonia step signals and gives off different electric potential signals. Through the in-depth analysis of the system mechanism and the study of the recursion least square algorithm,the control model is built and identified. The experimental results show that this method is simple and the measurement error is relatively small. Therefore, ammonium measuring system mentioned above can be used for online ammonium measuring and has certain application value and practical extending significance.

关 键 词：控制模型 系统辨识 递推最小二乘算法 氨气敏电极 

分 类 号：TN9[电子电信—信息与通信工程]