CAJ | 학술논문

针对序批式活性污泥法(SBR, Sequencing Batch Reactor)污水处理过程具有的非线性、时变、强耦合等特性，并考虑污水处理过程控制存在入水水质流量等干扰量，进一步加大控制难度等问题，本文提出1种扰动观测器与模糊PID结合的污水处理控制方法。首先分析扰动观测器结构特点以及核心部分低通滤波器的选择，设计扰动观测器对控制过程常见干扰量进行预测，并根据预测扰动信号在控制系统输入端进行有效补偿，达到抵消干扰的效果；同时在此基础上结合模糊PID控制方法，自适应整定PID控制器参数，实现溶解氧DO的优化控制。最后建立仿真模型进行实验，并与常规PID控制和模糊PID控制效果进行对比，结果表明该组合控制方法能有效克服干扰，控制精度较高，具有较强的适应性和鲁棒性。
침대서비식활성오니법(SBR, Sequencing Batch Reactor)오수처리과정구유적비선성、시변、강우합등특성，병고필오수처리과정공제존재입수수질류량등간우량，진일보가대공제난도등문제，본문제출1충우동관측기여모호PID결합적오수처리공제방법。수선분석우동관측기결구특점이급핵심부분저통려파기적선택，설계우동관측기대공제과정상견간우량진행예측，병근거예측우동신호재공제계통수입단진행유효보상，체도저소간우적효과；동시재차기출상결합모호PID공제방법，자괄응정정PID공제기삼수，실현용해양DO적우화공제。최후건립방진모형진행실험，병여상규PID공제화모호PID공제효과진행대비，결과표명해조합공제방법능유효극복간우，공제정도교고，구유교강적괄응성화로봉성。
According to characteristics of nonlinear, time-varying, strong coupling in sequencing batch activated sludge wastewater treatment process, and considering that sewage treatment process control is susceptible to process disturbance like water quality parameters which causes the problems like increasing control difficulties, the disturbance observer combined with fuzzy PID control method is proposed for sewage treatment. Firstly, through analyzing the structural characteristics of the disturbance observer and design of disturbance observer that predict the control process interferences, an effective compensation for interfere can be achieved by making effective compensation at input of the control system. On this basis, the fuzzy PID control method that adjusts PID controller parameters adaptively is added to achieve optimal control of dissolved oxygen DO. Based on the result of simulation and compared with conventional PID control and fuzzy PID control method, verified that the control method can effectively overcome the interference, and has strong adaptability and robustness.