Subspace-based optimal control of N-removal activated sludge plants

被引：0

作者：

Sotomayor, OAZ ^{[1
]}

Park, SW ^{[1
]}

Garcia, C ^{[1
]}

机构：

[1] Univ Sao Paulo, Polytech Sch, LSCP, Dept Chem Engn, BR-05508900 Sao Paulo, Brazil

来源：

PROCEEDINGS OF THE 2001 IEEE INTERNATIONAL CONFERENCE ON CONTROL APPLICATIONS (CCA'01) | 2001年

关键词：

water pollution; nitrogen compounds; linear-quadratic control; subspace identification; Kalman filtering; state feedback; muitivariable systems;

D O I：

10.1109/CCA.2001.973931

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this paper, a multivariable feedforward/statefeedback Linear-Quadratic (LQ) + (1) controller is designed and used to control the NOx - N concentration (nitrate-nitrogen plus nitrite-nitrogen) in both anoxic and aerobic zones of a pre-denitrifying activated sludge process. The controller design is based on a discrete state-space model of the process, and it incorporates integral error and anti-reset windup. The state-space model was obtained using a subspace-based identification technique, from input/output data. The "artificial" states generated by the subspace algorithm are estimated on-line through a Kalman filter (KF) and coupled with the LQ-controller. This technique is evaluated through simulations using the ASWWTP-USP benchmark and the results show the potential efficiency of the proposed approach.

引用

页码：588 / 593

页数：2

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