三相生物流化床处理氨氮废水模糊控制系统研究  

An approach to fuzzy control of ammonia-nitrogen wastewater treatment plants using three-phase bio-fluidized bed

作　　者：张慧妍[1] 翁贻方[1] 汪苹[2] 冯旭东[2] 朱佩佩[1] 

机构地区：[1]北京工商大学自动化系,北京100048 [2]北京工商大学环境工程系,北京100048

出　　处：《计算机与应用化学》2010年第4期430-434,共5页Computers and Applied Chemistry

基　　金："十一五"国家科技支撑计划项目(2007BAK36B07);北京工商大学青年教师科研启动基金资助项目(2009)

摘　　要：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。To have ammonia-nitrogen wastewater treatment with the aerobic internal-circulation three-phase biological fluidized bed feedback controlled,and to avoid the excessive blast aeration,the brief mathematical model is presented.The input and output are the ammonia-nitrogen concentration of wastewater-in and wastewater-out respectively.For such object with both big inertia and time-delay, the fuzzy PD＋I controller is figured out.The frequency-dorm harmonic balance analysis verifies the stability of the closed-loop system. The computer simulation results indicate that under different kinds of disturbance signals,the controller is able to adjust the blast aeration, and drive the ammonia-nitrogen concentration of wastewater-out smoothly and fast close to the reference input in certain precision. The system is good at control accuracy and disturbance attenuation.

关 键 词：好氧三相内循环生物流化床反应器 氨氮浓度 模糊控制 稳定性 抗干扰能力 

分 类 号：TP273.4[自动化与计算机技术—检测技术与自动化装置] X703.1[自动化与计算机技术—控制科学与工程]