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Mathematical Problems in Engineering - Volume 2015 2015, Article ID 178953, 9 pages -

Research ArticleSchool of Computer and Information Engineering, Beijing Technology and Business University, Beijing 100048, China

Received 20 October 2014; Accepted 12 December 2014

Academic Editor: Wudhichai Assawinchaichote

Copyright © 2015 Xiaoyi Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In wastewater treatment plants WWTPs, the dissolved oxygen is the key variable to be controlled in bioreactors. In this paper, linear active disturbance rejection control LADRC is utilized to track the dissolved oxygen concentration based on benchmark simulation model number 1 BSM1. Optimal LADRC parameters tuning approach for wastewater treatment processes is obtained by analyzing and simulations on BSM1. Moreover, by analyzing the estimation capacity of linear extended state observer LESO in the control of dissolved oxygen, the parameter range of LESO is acquired, which is a valuable guidance for parameter tuning in simulation and even in practice. The simulation results show that LADRC can overcome the disturbance existing in the control of wastewater and improve the tracking accuracy of dissolved oxygen. LADRC provides another practical solution to the control of WWTPs.





Autor: Xiaoyi Wang, Fan Wang, and Wei Wei

Fuente: https://www.hindawi.com/



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