An observability and detectability analysis for non-linear uncertain CSTR model of biochemical processes

M Czyżniewski, R Łangowski - Scientific Reports, 2022 - nature.com
The problem of proving observability/detectability properties for selected non-linear
uncertain model of biochemical processes has been addressed in this paper. In particular …

A geometric observer-assisted approach to tailor state estimation in a bioreactor for ethanol production

S Lisci, M Grosso, S Tronci - Processes, 2020 - mdpi.com
In this work, a systematic approach based on the geometric observer is proposed to design
a model-based soft sensor, which allows the estimation of quality indexes in a bioreactor …

Two decentralized dynamic state estimation schemes for multimachine power systems with transmission losses

N Vieyra, P Maya-Ortiz… - … on Electrical Energy …, 2023 - Wiley Online Library
This article addresses the problem of estimating the state of a multimachine power system
(MPS). To work with power networks with lossy transmission lines, a variation of the classical …

Saturated PI control of continuous bioreactors with Haldane kinetics

A Schaum, J Alvarez, T Lopez-Arenas - Chemical engineering science, 2012 - Elsevier
The problem of designing a saturated Output-Feedback (OF) controller for a continuous
bioreactor with Haldane kinetics is addressed. The reactor must be operated at maximum …

Monitoring of batch industrial crystallization with growth, nucleation, and agglomeration. part 2: Structure design for state estimation with secondary measurements

M Porru, L Özkan - Industrial & engineering chemistry research, 2017 - ACS Publications
This work investigates the design of alternative monitoring tools based on state estimators
for industrial crystallization systems with nucleation, growth, and agglomeration kinetics. The …

Observability analysis and robust observer design for a continuous yeast culture

P Jerono, A Schaum, T Meurer - Journal of Process Control, 2021 - Elsevier
The observer design problem for state estimation in a continuous (or semi-continuous) yeast
fermentation using Sonnleitner's bottleneck model is addressed. The system's detectability …

On the global nonlinear stochastic dynamical behavior of a class of exothermic CSTRs

S Tronci, M Grosso, J Alvarez, R Baratti - Journal of Process Control, 2011 - Elsevier
The problem of assessing the short and long time effects of stochastic fluctuations on the
global-nonlinear dynamics of a class of closed-loop continuous exothermic reactors with …

Decentralized robust state estimation of multimachine power systems

N Vieyra, J Álvarez, P Maya-Ortiz - … Journal of Electrical Power & Energy …, 2022 - Elsevier
The problem of online estimating the states of nonlinear (NL) Multimachine Power Systems
(MPSs) is addressed within a constructive framework that combines notions and tools from …

Estimation structure design for staged systems

C Fernandez, J Alvarez, R Baratti, A Frau - Journal of process control, 2012 - Elsevier
The problem of designing the state estimation structure for staged process is addressed
within a geometric estimation (GE) framework, with the class of binary columns as case …

Feedforward output-feedback control for continuous exothermic reactors with isotonic kinetics

J Diaz-Salgado, J Alvarez, A Schaum… - Journal of Process …, 2012 - Elsevier
The robust feedforward (FF) output-feedback (OF) control problem of (possibly open-loop
unstable) continuous exothermic jacketed reactors with isotonic kinetics with respect to …