作　　者： ; ; ;

机构地区： 中国科学院

出　　处： 《计算机工程与设计》 2006年第14期2601-2602,2697,共3页

摘　　要： 溶解氧浓度控制是污水处理过程的核心环节,恰当的溶解氧控制能改进过程性能,而且可以节约能源。但是由于入水水质水量的时变性、非线性和延迟等动态特性,使得基于常规PID的控制效果很不理想,常引起出水水质波动大、能耗高的问题。针对入水水质水量的扰动不确定性设计了基于干扰观测器的PID控制方法,仿真结果表明,此种控制方案鲁棒性强,能有效克服入水干扰的不确定性,具有实际应用前景。 The dissolved oxygen （DO） concentration in wastewater treatment process is recognized as an important variable to be controlled both for economical and process efficiency purpose. Because of time-varying influent wastewater conditions, nonlinearity, time delay, the control performance of based on general PID is very bad. The quality ofeffiuent is often fluctuating and energy consumption is also very big are often faced problems. Aiming at the problem of time-varying influent wastewater conditions, a control method based on disturbance observer PID is designed. The results of simulation indicate that the presented method has stronger robustness and can overcome the uncertainty influent wastewater conditions, And the method has foreground in practice application.

关 键 词： 污水处理过程 溶解氧 干扰观测器 鲁棒性

领　　域： [自动化与计算机技术] [自动化与计算机技术]