CAJ | 학술논문

针对污水处理系统溶解氧浓度难以控制和曝气耗能高的问题，提出了一种基于双层优化结构的加权区间预测控制方法。该方法首先通过动态矩阵控制算法建立污水处理过程预测模型，然后设计一种融合溶解氧区间控制和曝气能耗指标的双层目标优化控制策略，同时为减小模型失配和干扰因素对系统的影响，利用模型预测误差进行系统反馈校正。仿真结果表明，与传统PID 控制和模型预测控制方法相比，在不同工况下，区间预测控制方法可较好的实现溶解氧浓度的动态稳定控制，具有较强的抗干扰能力与自适应性，且在保证出水水质的前提下能有效降低曝气能耗。
침대오수처리계통용해양농도난이공제화폭기모능고적문제，제출료일충기우쌍층우화결구적가권구간예측공제방법。해방법수선통과동태구진공제산법건립오수처리과정예측모형，연후설계일충융합용해양구간공제화폭기능모지표적쌍층목표우화공제책략，동시위감소모형실배화간우인소대계통적영향，이용모형예측오차진행계통반궤교정。방진결과표명，여전통PID 공제화모형예측공제방법상비，재불동공황하，구간예측공제방법가교호적실현용해양농도적동태은정공제，구유교강적항간우능력여자괄응성，차재보증출수수질적전제하능유효강저폭기능모。
Aiming at the problems of the difficult-to-control of dissolved oxygen concentration and the high energy consumption of aeration process in sewage treatment system, a weighted zone predictive control method based on bi-level optimization structure is proposed. Firstly, the predictive model of sewage treatment process is developed by using the dynamic matrix control (DMC) algorithm, and then a bi-level objective optimization control strategy is designed which combines zone control of dissolved oxygen concentration and aeration energy consumption index. Meanwhile, in order to reduce the influence of model mismatch and disturbance factors, system feedback correction is given by using model prediction error. Finally, compared with the conventional PID control and model predictive control (MPC) method under different working conditions, the simulation results show that the proposed zone predictive control (ZPC) method could realize dynamic stability control of dissolved oxygen concentration better, and has strong disturbance rejection ability and self-adaptability, furthermore can effectively reduce aeration energy consumption on the premise of ensuring the effluent water quality.