Specific growth rate estimation in (fed-)batch bioreactors using second-order sliding observers

This paper addresses the estimation of specific growth rate of microorganisms in bioreactors using sliding observers. In particular, a second-order sliding observer based on biomass concentration measurement is proposed. Differing from other proposals that only guarantee bounded errors, the proposed...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: De Battista, Hernán, Picó, Jesús, Garelli, Fabricio, Vignoni, Alejandro
Formato: Articulo
Lenguaje:Inglés
Publicado: 2011
Materias:
Ingeniería
Bioreactors
Process control
Nonlinear observers
Sliding mode
Fermentation processes
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/128857
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-128857
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ingeniería
Bioreactors
Process control
Nonlinear observers
Sliding mode
Fermentation processes
spellingShingle Ingeniería
Bioreactors
Process control
Nonlinear observers
Sliding mode
Fermentation processes
De Battista, Hernán
Picó, Jesús
Garelli, Fabricio
Vignoni, Alejandro
Specific growth rate estimation in (fed-)batch bioreactors using second-order sliding observers
topic_facet Ingeniería
Bioreactors
Process control
Nonlinear observers
Sliding mode
Fermentation processes
description This paper addresses the estimation of specific growth rate of microorganisms in bioreactors using sliding observers. In particular, a second-order sliding observer based on biomass concentration measurement is proposed. Differing from other proposals that only guarantee bounded errors, the proposed observer provides a smooth estimate that converges in finite time to the time-varying parameter. Stability is proved using a Lyapunov approach. The observer exhibits also robustness to process uncertainties since no model of the reaction is used for its design. In addition, the off-surface coordinate of the sliding observer is useful to determine the convergence time as well as to identify sensor faults and unexpected behaviors. Because of the structure of the output error injection, chattering phenomena of conventional sliding mode algorithms are substantially reduced. The features of the proposed observer are assessed by numerical and experimental data.
format Articulo
Articulo
author De Battista, Hernán
Picó, Jesús
Garelli, Fabricio
Vignoni, Alejandro
author_facet De Battista, Hernán
Picó, Jesús
Garelli, Fabricio
Vignoni, Alejandro
author_sort De Battista, Hernán
title Specific growth rate estimation in (fed-)batch bioreactors using second-order sliding observers
title_short Specific growth rate estimation in (fed-)batch bioreactors using second-order sliding observers
title_full Specific growth rate estimation in (fed-)batch bioreactors using second-order sliding observers
title_fullStr Specific growth rate estimation in (fed-)batch bioreactors using second-order sliding observers
title_full_unstemmed Specific growth rate estimation in (fed-)batch bioreactors using second-order sliding observers
title_sort specific growth rate estimation in (fed-)batch bioreactors using second-order sliding observers
publishDate 2011
url http://sedici.unlp.edu.ar/handle/10915/128857
work_keys_str_mv AT debattistahernan specificgrowthrateestimationinfedbatchbioreactorsusingsecondorderslidingobservers
AT picojesus specificgrowthrateestimationinfedbatchbioreactorsusingsecondorderslidingobservers
AT garellifabricio specificgrowthrateestimationinfedbatchbioreactorsusingsecondorderslidingobservers
AT vignonialejandro specificgrowthrateestimationinfedbatchbioreactorsusingsecondorderslidingobservers
bdutipo_str Repositorios
_version_ 1764820451615309826

Ejemplares similares