工业污水处理溶解氧的双模糊控制系统研究
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摘要
针对AA0工艺的好氧池曝气系统,常规PID控制难以处理的多时变、有惯性的特点,采用双模糊控制算法设计了溶解氧双模糊控制。分析AA0工艺曝气量控制的原理,在合理建立模糊规则库的基础上进行双模糊控制器的设计,并采用西门子S7-300PLC作为主控制器,给出模糊算法的PLC编程实现步骤,对模糊控制规则表进行编码,使用指针寻址编程方式来进行解码。通过对双模糊控制系统中的偏差及其微分的论域和模糊子集的选择,改变量化因子的值以提高系统的性能。最终将上述模糊控制方法应用到AA0污水处理控制系统中,得到良好的曝气效果。
According to the special requirement of aeration rate control in the aerobic pool based on the AAO sewage treatment technology, the intelligent control system is designed using the double fuzzy control algorithm. Through analyzing the principle of the control on the aeration rate of AAO technology, the double fuzzy controller is constructed based on the setting of fuzzy rule base, parameters are changed to advance the performance. Finally, this article describes the principle and the methods to accomplish the program of the double fuzzy controller by the use of programmable logic controller. This control method has been applied to the modern sewage disposal process, meeting the requirements of process and control.
According to the special requirement of aeration rate control in the aerobic pool based on the AAO sewage treatment technology, the intelligent control system is designed using the double fuzzy control algorithm. Through analyzing the principle of the control on the aeration rate of AAO technology, the double fuzzy controller is constructed based on the setting of fuzzy rule base, parameters are changed to advance the performance. Finally, this article describes the principle and the methods to accomplish the program of the double fuzzy controller by the use of programmable logic controller. This control method has been applied to the modern sewage disposal process, meeting the requirements of process and control.
引文
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[13]杨虹,陈静,刘云龙.基于西门子S7-200PLC的传输带控制系统设计[J].控制工程,2016,23(9):1340-1342.Yang H,Chen J,Liu Y L.Design of Conveyer Belt Control System Based on Siemens S7-200PLC[J].Control Engineering of China,2016,23(9):1340-1342.
[2]Bekir Ersu C,Ong SK,Arslankaya E.Comparison of recirculation configurations for biological nutrient removal in a membrane bioreactor[J].Water Res.2008,42(6):1651-1663.
[3]周振,胡达龙,吴志超,等.基于数学模型的多模式AAO系统运行优化研究[J].中国环境科学,2014,34(7):1734-1739.Zhou Z,Hu D L,Wu Z C,et al.Model-based optimization of the multimode anaerobic/anxic/aeroboic system[J].China Environmental Science,2014,34(7):1734-1739.
[4]Peter E,Selisteadu D,Senderscu D.Nonlinear and neural networks based adaptive control for a wastewater treatment bioprocess[M].Springer Berlin:Heidelberg,2008:273-280.
[5]乔俊飞,付文韬,韩红桂.基于SOTSFNN的溶解氧浓度控制方法[J].化工学报,2016,67(3):960-966.Qiao J F,Fu W T,Han H G,Dissolved oxygen control method based on self-organizing T-S fuzzy neural network[J].CIESC Journal,2016,67(3):960-966.
[6]Holenda B,Domokos E,Redey A.Dissolved oxygen control of the activated sludge wastewater treatment process using model predictive control[J].Computer&Chemical Engineering,2008,32(6):1270-1278.
[7]Wahab N A,Katebi R,Balferud J.Multivariable PID control design for activated sludge process with nitrification and gentrification[J].Biochemical Engineering Journal,2009,45(3):239-248.
[8]梁昔明,周威,李山春.基于模糊控制的污水曝气系统的研究[J].控制工程,2012,19(2):328-331.Liang X M,Zhou W,Li S C.Study of Wastewater Aeration System Based on Fuzzy Control[J].Control Engineering of China,2012,19(2):328-331.
[9]张勇,王淑莹,赵伟华.中试规模AAO曝气生物滤池双污泥系统的启动运行[J].化工学报,2015,66(10):4228-4135.Zhang Y,Wang S Y,Zhao W H.Start-up of pilot-scale AAO-BAFtwo-sludge system[J].CIESC Journal,2015,66(10):4228-4135.
[10]韩广,乔俊飞,薄迎春.溶解氧浓度的前馈神经网络建模控制方法[J].控制理论与应用,2013,30(5):585-591.Han G,Qiao J F,Bo Y C.Feedforward neural network modeling and control for dissolved oxygen concentration[J].Control Theory&Applications,2013,30(5):585-591.
[11]杨世品,陈林,李山春,等.基于模糊PID控制的污水处理溶解氧控制系统[J].仪表技术与传感器,2009,46(1):88-90.Yang S P,Li L,Li S C,et al.Design for Dissolved Oxygen Control System Based on Fuzzy-PID Control in Wasterwater Treatment[J].Instrument Technique and Sensor,2009,46(1):88-90.
[12]王昕,江航,郑益慧,等.飞机空调车的多模型模糊PID控制器设计[J].控制工程,2016,23(4):453-457.Wang X,Jiang H,Zheng Y H,et al.Multiple Models Fuzzy PIDController Design in Air-condition Temperature Control System[J].Control Engineering of China,2016,23(4):453-457.
[13]杨虹,陈静,刘云龙.基于西门子S7-200PLC的传输带控制系统设计[J].控制工程,2016,23(9):1340-1342.Yang H,Chen J,Liu Y L.Design of Conveyer Belt Control System Based on Siemens S7-200PLC[J].Control Engineering of China,2016,23(9):1340-1342.