模糊代数PID控制在污水处理溶解氧控制系统的应用  

Application of Fuzzy Algebra PID Control in Dissolved Oxygen Control System of Wastewater Treatment

作　　者：曾春霞[1] 董宗哲 何涛[1] ZENG Chun-xia;DONG Zong-zhe;HE Tao(Hunan Chemical Vocation Technology College)

机构地区：[1]湖南化工职业技术学院

出　　处：《化工自动化及仪表》2021年第6期528-534,共7页Control and Instruments in Chemical Industry

基　　金：2017年度湖南省教育厅科学研究项目(17C0555)。

摘　　要：针对污水生化处理过程中溶解氧浓度受水质、pH值及温度等因素的影响会出现严重的非线性等问题,提出将模糊代数控制的智能性与常规PID控制的可靠性相结合,设计了一种新颖的模糊代数PID控制器。仿真结果和实际应用表明:采用模糊代数PID控制器后,化工污水处理溶解氧浓度控制系统的响应速度加快,过渡过程时间大幅缩短,振荡次数少,具有较强的鲁棒性和良好的稳定性。Considering serious nonlinearity of the dissolved oxygen concentration of biochemical treatment of wastewater incurred by the water quality,pH value,temperature and other factors,a novel fuzzy algebraic PID controller was designed by combining the intelligence of fuzzy algebraic control with the reliability of conventional PID control.Both simulation results and practical application show that,after employing the fuzzy algebraic PID controller,the control system for dissolved oxygen concentration in biochemical treatment of wastewater can accelerate the response speed of the control system,greatly shorten the transition process time,reduce the number of oscillations and has strong robustness and good stability.

关 键 词：模糊代数PID 污水处理 模糊控制 PID 溶解氧 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]