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以实现好氧三相内循环生物流化床废水处理过程的闭环控制,克服曝气造成能耗大的问题为目的,研究并提出以入、出水的氨氮浓度为输入、输出量的好氧三相内循环生物反应器氨氮废水处理过程的主导数学模型,并针对这种大惯性、大滞后的被控对象,给出模糊PD+I控制方案。用谐波平衡法分析闭环控制系统的稳定性。计算机仿真分析表明系统对不同的扰动信号,能通过经济调整曝气量实现以一定精度,平稳、迅速趋向设定值,具有好的抗干扰能力和控制精度。
In order to achieve the closed-loop control of aerobic three-phase internal circulation biological fluidized bed wastewater treatment process and overcome the problem of large energy consumption caused by aeration, the aerobic tris Phase biological reactor ammonia nitrogen wastewater treatment process of the leading mathematical model, and for such a large inertia, large delay of the controlled object, fuzzy PD + I control program is given. Analyze the Stability of Closed-loop Control System by Harmonic Balance Method. Computer simulation analysis shows that the system of different disturbance signals, through the economic adjustment of aeration to achieve a certain accuracy, smooth, rapidly toward the set value, with good anti-interference ability and control accuracy.