Title
Continuous finite-time extended state observer design for electro-hydraulic systems
Abstract
This paper presents a novel framework towards a time-varying observer design for nonlinear electro-hydraulic actuators. The key idea of this paper is to employ a positive-increasing function associated with the observer objective to improve the estimation performance. An extended state observer is designed to estimate the full state variables and the uncertainties without any knowledge about the upper bounds of the uncertainties and their derivatives. First, without loss of generality, the system model is divided into three parts, and the extended state observers are designed for each part, independently. Then, the time-varying gains of each observer are designed to make the observation errors uniformly bounded. Finally, the simulated performance of the presented framework is compared with two valid approaches including high-order sliding mode and high-gain extended state observers.
Year
DOI
Venue
2022
10.1016/j.jfranklin.2022.04.030
Journal of the Franklin Institute
DocType
Volume
Issue
Journal
359
10
ISSN
Citations 
PageRank 
0016-0032
0
0.34
References 
Authors
0
3
Name
Order
Citations
PageRank
Hamid Razmjooei101.01
Gianluca Palli226829.98
Elahe Abdi300.68