摘要
为了通过曝气使活性污泥得到足够的氧气,使水中的可溶性有机污染物被活性污泥吸附,并被存活在活性污泥上的微生物分解,污水得到净化;针对污水处理过程控制对象的非线性、时变性以及不确定性等特点,提出了一种基于模糊自适应PID的控制方法,引入调整因子的污水处理COD自适应模糊控制系统,通过调节曝气机频率,将COD稳定地控制在理想的数值,该系统以Siemens S7编程实现;结果表明该控制系统弥补了常规PID和单纯模糊控制的不足,获得了更好的控制效果,提高了污水处理效率;该控制系统有效地解决了曝气生物滤池工艺中曝气过程的时变性、干扰多、变量耦合用常规PID控制效果不理想的状况,对于控制对象模型不好建立的控制对象,具有很好的控制效果。
In order to enable the adoption of enough oxygen and make water soluble organic compounds absorpted by the activated sludge. The microbial in the activated sludge decomposite it and make sewage purificate. To consider the characteristics of Sewage treatment process , such as non--linear, time--variant and uncertainty, the system applies fuzzy adaptive PID as control algorithm. The introduction of the adjustment factor of the sewage treatment system can stably control COD in an ideal state by regulating the frequency aerators. The control algorithm is controlled by Siemens S7. The results show that the system which can remedy the shortages of PID and fuzzy control has the advantages of effective control.
出处
《计算机测量与控制》
CSCD
北大核心
2009年第12期2449-2451,2478,共4页
Computer Measurement &Control
