[HTML][HTML] Review and classification of recent observers applied in chemical process systems

JM Ali, NH Hoang, MA Hussain, D Dochain - Computers & Chemical …, 2015 - Elsevier
Observers are computational algorithms designed to estimate unmeasured state variables
due to the lack of appropriate estimating devices or to replace high-priced sensors in a plant …

A concise review of state estimation techniques for partial differential equation systems

IF Yupanqui Tello, A Vande Wouwer, D Coutinho - Mathematics, 2021 - mdpi.com
While state estimation techniques are routinely applied to systems represented by ordinary
differential equation (ODE) models, it remains a challenging task to design an observer for a …

Equation-based and data-driven modeling strategies for industrial coating processes

P Papavasileiou, ED Koronaki, G Pozzetti… - Computers in …, 2023 - Elsevier
Abstract Computational Fluid Dynamics (CFD) and Machine Learning (ML) approaches are
implemented and compared in an industrial Chemical Vapor Deposition process for the …

Determining optimal sensor locations for state and parameter estimation for stable nonlinear systems

AK Singh, J Hahn - Industrial & engineering chemistry research, 2005 - ACS Publications
This paper presents a new approach for sensor location for state and parameter estimation
for stable nonlinear systems. The unique feature of this technique is that sensor locations for …

Reinforcement learning-based optimal sensor placement for spatiotemporal modeling

Z Wang, HX Li, C Chen - IEEE transactions on cybernetics, 2019 - ieeexplore.ieee.org
A reinforcement learning-based method is proposed for optimal sensor placement in the
spatial domain for modeling distributed parameter systems (DPSs). First, a low-dimensional …

Greenhouse micro-climate prediction based on fixed sensor placements: A machine learning approach

OS Ajani, MJ Usigbe, E Aboyeji, DD Uyeh, Y Ha, T Park… - Mathematics, 2023 - mdpi.com
Accurate measurement of micro-climates that include temperature and relative humidity is
the bedrock of the control and management of plant life in protected cultivation systems …

Efficient sensor placement for signal reconstruction based on recursive methods

B Li, H Liu, R Wang - IEEE Transactions on Signal Processing, 2021 - ieeexplore.ieee.org
Selection of sparse sensors to recover the global signal field is a crucial task in many areas.
Most of the existing algorithms tackle this problem by optimizing the surrogates of …

Robust detection and accommodation of incipient component and actuator faults in nonlinear distributed processes

A Armaou, MA Demetriou - AIChE journal, 2008 - Wiley Online Library
A class of nonlinear distributed processes with component and actuator faults is presented.
An adaptive detection observer with a time varying threshold is proposed that provides …

From partial data to out-of-sample parameter and observation estimation with diffusion maps and geometric harmonics

ED Koronaki, N Evangelou, YM Psarellis… - Computers & Chemical …, 2023 - Elsevier
A data-driven framework is presented, that enables the prediction of quantities, either
observations or parameters, given sufficient partial data. The framework is illustrated via a …

Sensor networks, data processing, and inference: the hydrology challenge

A Zanella, S Zubelzu, M Bennis - IEEE Access, 2023 - ieeexplore.ieee.org
In the last years, many European countries have experienced the effects of climate change,
in the form of a scarcity of drinking water resources, prolonged periods of drought, and …