活性污泥系统ASM2d模型的自适应模糊PID控制  

Self-adaptive Fuzzy PID Control of Activated Sludge System ASM2d Model

作　　者：唐思明 武延坤[2] TANG Si-ming1, WU Yan-kun1(1. Shenzhen Water Technology Co. , Ltd. , Shenzhen 518030, China; 2. Shenzhen Polytechnic, Shenzhen 518052, Chin)

机构地区：[1]深圳市水务科技有限公司,广东深圳518030 [2]深圳职业技术学院建筑与环境工程学院,广东深圳518052

出　　处：《中央民族大学学报（自然科学版）》2018年第3期54-59,共6页Journal of Minzu University of China(Natural Sciences Edition)

基　　金：深圳市科技计划项目(No.CXZZ20150429150018260)

摘　　要：生物污水处理过程是非线性、大滞后、多变量和强耦合的复杂系统,针对这一复杂系统,本文根据污水处理厂的实际情况,在对A2O工艺活性污泥系统ASM2d模型研究的基础上提出一种自适应模糊PID控制器.该控制器可根据反馈计算得到的误差和误差变化率,实时在线整定后置PID控制器的三个修整参数△K_p、△K_i和△K_d,并得到此时的K_p、K_i和K_d.该控制器结合常规PID控制算法和模糊控制思想,实现了PID参数的最佳调节,相比传统模糊控制具有更强的鲁棒性,有效提高了系统的控制性能.Biological wastewater treatment process is nonlinear,large lag,multivariable and strong coupling complex system. In order to solve this complex system,according to the actual situation of sewage treatment plant,a self-adaptive fuzzy PID controller is put forward on the basis of the research on A2O process activated sludge system ASM2d model. This controller uses error and error change rate which is calculated by the feedback value to set three dressing parameters： △Kp、△Ki and △K donline in real time,and gain three parameters： Kp、Ki和 Kd at this time. This controller combine with conventional PID control algorithm and fuzzy control thoughts,and realize the best adjustment of PID parameters. Compared with the traditional fuzzy controller,this controller has better robustness,and improve the control performance of the system.

关 键 词：活性污泥系统ASM2d模型 自适应模糊PID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] X703[自动化与计算机技术—控制科学与工程]