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dc.contributor.author
Biagiola, Silvina Ines

dc.contributor.author
Figueroa, Jose Luis

dc.date.available
2020-02-19T23:41:38Z
dc.date.issued
2004-08
dc.identifier.citation
Biagiola, Silvina Ines; Figueroa, Jose Luis; A high gain nonlinear observer: Application to the control of an unstable nonlinear process; Pergamon-Elsevier Science Ltd; Computers and Chemical Engineering; 28; 9; 8-2004; 1881-1898
dc.identifier.issn
0098-1354
dc.identifier.uri
http://hdl.handle.net/11336/98105
dc.description.abstract
State estimation has become an important area of research in the field of process engineering. This is because there are many applications that demand the knowledge of many of the state variables, if not all of them. Among others, the implementation of nonlinear control methods as well as monitoring some relevant process variables can be mentioned. The purpose of this paper is to introduce a nonlinear high gain observer in order to estimate the whole process state variables. Whenever some construction conditions hold, it is possible to obtain estimates that converge asymptotically to the actual values. Moreover, this estimator has robust performance in the presence of model uncertainty and measurement noise. A quantitative analysis is developed to measure the observer robustness. Though the estimated states can be used for many purposes, in this work we aim at using the estimates for output regulation. For this goal, a nonlinear controller based on exact linearization is designed. As a particular application, we consider the open-loop unstable jacketed exothermic chemical reactor. This CSTR is widely recognized as a difficult problem for the purpose of control. In order to achieve the control goal, a simple algorithm lying on exact linearization principle is considered. Finally, computer simulations are developed for showing the performance of the proposed nonlinear observer (NO). The performance of the observer when used for control purpose was also evaluated.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Pergamon-Elsevier Science Ltd

dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CSTR
dc.subject
ESTIMATION
dc.subject
NONLINEAR OBSERVERS
dc.subject
PROCESS CONTROL
dc.subject
ROBUSTNESS
dc.subject.classification
Control Automático y Robótica

dc.subject.classification
Ingeniería Eléctrica, Ingeniería Electrónica e Ingeniería de la Información

dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS

dc.title
A high gain nonlinear observer: Application to the control of an unstable nonlinear process
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-02-13T14:07:00Z
dc.journal.volume
28
dc.journal.number
9
dc.journal.pagination
1881-1898
dc.journal.pais
Estados Unidos

dc.description.fil
Fil: Biagiola, Silvina Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Investigaciones en Ingeniería Eléctrica "Alfredo Desages". Universidad Nacional del Sur. Departamento de Ingeniería Eléctrica y de Computadoras. Instituto de Investigaciones en Ingeniería Eléctrica "Alfredo Desages"; Argentina
dc.description.fil
Fil: Figueroa, Jose Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Investigaciones en Ingeniería Eléctrica "Alfredo Desages". Universidad Nacional del Sur. Departamento de Ingeniería Eléctrica y de Computadoras. Instituto de Investigaciones en Ingeniería Eléctrica "Alfredo Desages"; Argentina
dc.journal.title
Computers and Chemical Engineering

dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.compchemeng.2004.03.004
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0098135404000675
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