基于PLC的污水处理鼓风曝气模糊代数PID控制系统  

A Fuzzy Algebraic PID Control System of Sewage Treatment Blowing Aeration Based on PLC

作　　者：曾春霞[1] 董宗哲 匡芬芳[1] ZENG Chunxia;DONG Zongzhe;KUANG Fenfang(Hunan Chemical Vocation Technology College,Zhuzhou 412000,China)

机构地区：[1]湖南化工职业技术学院,湖南株洲412000

出　　处：《仪表技术》2021年第5期12-15,26,共5页Instrumentation Technology

基　　金：2017年度湖南省教育厅科学研究项目(17C0555)。

摘　　要：针对进水量、水质、pH值和水温等因素对污水处理曝气池中溶解氧控制效果的影响,选择模糊代数PID控制算法,选用S7-300PLC作为控制器,设计相关电路和主程序。通过变频器调节鼓风机的鼓风量,实现对溶解氧的有效控制。实际运行结果表明:该系统能有效克服干扰,具有良好的稳定性,且有显著的节能效果。In view of the influence of water inflow, water quality, pH value and water temperature on the control effect of dissolved oxygen in the aeration tank of sewage treatment, the fuzzy algebraic PID control algorithm is selected, and the S7-300 PLC is selected as the controller to design the relevant circuit and main program. The frequency converter is used to adjust the blast volume of the blower to realize the effective control of the dissolved oxygen. The actual operation results show that the system can effectively overcome the interference, and it has good stability and remarkable effect on the energy saving.

关 键 词：曝气 模糊PID控制 模糊代数 可编程逻辑控制器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]