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Publication . Article . 2021

Coupled tanks state estimation using a high-gain like observer

A. Adil; Ibrahima N'Doye; Ali Zemouche; Abdelghani Hamaz; Taous-Meriem Laleg-Kirati;
Open Access
Published: 15 Sep 2021
Publisher: HAL CCSD
Country: France

Published in IFAC-PapersOnLine, 54(14):96:101, 2021; International audience; The coupled tanks system is a widely used nonlinear system for testing control and estimation methods. This system has various applications such as wastewater treatment, water desalination, pharmaceutical industries, and petrochemical plants. Among the challenging problems is the water level estimation which is needed for controlling the system. In this paper, a high-gain like observer is proposed for the estimation of the water level from delayed output measurement. This observer tolerates a larger bound of the time-delay compared to that obtained by using standard high-gain approach. We show the effectiveness of such observer design and how the standard approach fails to reconstruct the water level in the tanks in the presence of a larger bound on the time-delay.

Subjects by Vocabulary

Microsoft Academic Graph classification: Computer science High gain observer Observer (quantum physics) Electrical engineering business.industry business State (functional analysis)


Coupled tanks system, high-gain observer, delayed output measurements, linear matrix inequalities (LMIs), [SPI.AUTO]Engineering Sciences [physics]/Automatic, Control and Systems Engineering, [SPI.AUTO] Engineering Sciences [physics]/Automatic

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