摘要
针对采用活性污泥工艺的中小型污水处理厂溶氧浓度(DO)控制难的问题,归纳出变参数活性污泥系统的状态空间模型,对系统进行稳定性分析,利用状态反馈方法改善系统的动态性能,面向系统系统设计并实现了一个基于修正因子自寻优的系统模糊控制器。仿真结果表明,和普通的模糊控制器相比,该控制器能够根据被控对象自动调整模糊控制规则,加快活性污泥水处理系统溶氧浓度响应速度,减小调节时间,同时减小超调量,满足控制要求。
In order to control DO of small or middle wastewater plant with activated sludge process effectively, the space-state model of activated sludge system is set up, with an analysis about system stability and enhancement in system dynamic performance via the method of state feedback. Furthermore, a fuzzy control with correction parameter is designed and realized. Test result shows that contracted with normal fuzzy control, the fuzzy control could automatically regulate its rules according to control object, make system response quickly, reduce regulating time and overshoot, meet control needs.
出处
《计算机工程与设计》
CSCD
北大核心
2009年第18期4263-4265,共3页
Computer Engineering and Design
关键词
活性污泥系统
状态空间模型
状态反馈
模糊控制
修正因子
activated sludge system
space-state model
state feedback
fuzzy control
correction parameter
