【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。更多还原

【Abstract】 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.更多还原