基于高效MPC的活性污泥水处理系统控制  

Efficient model predictive control strategy based active sludge wastewater treatment system control

作　　者：赵敏[1] 江艳霞[1] 

机构地区：[1]上海理工大学光电信息与计算机学院控制工程系,上海200093

出　　处：《信息技术》2014年第7期58-61,共4页Information Technology

基　　金：优秀青年基金项目(slg100008);上海市教委科技创新项目(13ZZ115);上海市重点学科资助项目(S30501)

摘　　要：针对具多胞描述不确定性的污水处理控制系统,基于高效预测控制策略(EMPC)设计保性能的控制器。首先给出变参数活性污泥系统的状态空间模型,根据工况特点将其转化为多胞不确定模型,然后结合二次性能指标,通过在线求解凸规划问题,导出保证系统鲁棒渐近稳定的反馈控制律,最后以污水处理厂的处理能力为例,对设计的控制器进行仿真,结果表明,控制器能够保证系统闭环稳定,具有良好的控制效果。This paper considers a kind of activated sludge wastewater treatment system with polytopicuncertainty description. An efficient model predictive control strategy （EMPC） is proposed to construct aperformance guaranteed controller. The state space model of an activated sludge system is established atfirst, and then according to the working condition of the system, the state space model is converted to apolytopic uncertain model. After getting the uncertain model, the online convex optimization problem issolved combined with the quadratic performance function in order to obtain the robust asymptoticallystable feedback controller. And at last, it takes a wastewater treatment system capacity for an example,and the simulation result proves that the proposed controller can ensure the stability of the closed-loopsystem, and the system has a good control effect.

关 键 词：活性污泥系统 多胞描述不确定系统 高效预测控制 半定规划 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]