Application of super-twisting observers to the estimation of state and unknown inputs in an anaerobic digestion system

被引：15

作者：

Sbarciog, M. ^{[1
]}

Moreno, J. A. ^{[2
]}

Wouwer, A. Vande ^{[1
]}

机构：

[1] UMONS, Automat Control Lab, B-7000 Mons, Belgium

[2] Univ Nacl Autonoma Mexico, Inst Ingn, Mexico City 04510, DF, Mexico

来源：

WATER SCIENCE AND TECHNOLOGY | 2014年 / 69卷 / 02期

关键词：

anaerobic digestion; sliding mode observers; state estimation; waste treatment;

D O I：

10.2166/wst.2013.726

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This paper presents the estimation of the unknown states and inputs of an anaerobic digestion system characterized by a two-step reaction model. The estimation is based on the measurement of the two substrate concentrations and of the outflow rate of biogas and relies on the use of an observer, consisting of three parts. The first is a generalized super-twisting observer, which estimates a linear combination of the two input concentrations. The second is an asymptotic observer, which provides one of the two biomass concentrations, whereas the third is a super-twisting observer for one of the input concentrations and the second biomass concentration.

引用

页码：414 / 421

页数：8

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