Sökning: onr:"swepub:oai:DiVA.org:uu-367049" >
Nonlinear system id...
Nonlinear system identification of the dissolved oxygen to effluent ammonium dynamics in an activated sludge process
-
- Chistiakova, Tatiana (författare)
- Uppsala universitet,Avdelningen för systemteknik,Reglerteknik
-
- Mattsson, Per (författare)
- University of Gävle
-
- Carlsson, Bengt (författare)
- Uppsala universitet,Avdelningen för systemteknik,Reglerteknik
-
visa fler...
-
- Wigren, Torbjörn (författare)
- Uppsala universitet,Avdelningen för systemteknik,Reglerteknik
-
visa färre...
-
(creator_code:org_t)
- Uppsala : Uppsala universitet, 2018
- Engelska 7 s.
-
Serie: Technical report / Department of Information Technology, Uppsala University, 1404-3203 ; 2018-011
- Relaterad länk:
-
http://www.it.uu.se/...
-
visa fler...
-
https://uu.diva-port... (primary) (Raw object)
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- Aeration of biological reactors in wastewater treatment plants is important to obtain a high removal of soluble organic matter as well as for nitrification but requires a significant use of energy. It is hence of importance to control the aeration rate, for example, by ammonium feedback control. The goal of this report is to model the dynamics from the set point of an existing dissolved oxygen controller to effluent ammonium using two types of system identification methods for a Hammerstein model, including a newly developed recursive variant. The models are estimated and evaluated using noise corrupted data from a complex mechanistic model (Activated Sludge Model no.1). The performances of the estimated nonlinear models are compared with an estimated linear model and it is shown that the nonlinear models give a significantly better fit to the data. The resulting models may be used for adaptive control (using the recursive Hammerstein variant), gain-scheduling control, L2 stability analysis, and model based fault detection.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Miljöbioteknik -- Vattenbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Environmental Biotechnology -- Water Treatment (hsv//eng)
Nyckelord
- System identification
- Output error model
- Hammerstein model
- Wastewater treatment
- BSM1
Publikations- och innehållstyp
- vet (ämneskategori)
- rap (ämneskategori)