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PD-Based Optimal ADRC with Improved Linear Extended State Observer [PDF]

open access: yesEntropy, 2021
Taking dead-zone nonlinearlity and external disturbances into account, an active disturbance rejection optimal controller based on a proportional-derivative (PD) control law is proposed by connecting the proportional-integral-derivative (PID) control ...
Zhen Zhang, Jian Cheng, Yinan Guo
doaj   +5 more sources

Adaptive Extended State Observer for the Dual Active Bridge Converters [PDF]

open access: yesSensors
The DC–DC dual active bridge (DAB) converter has become one of the essential units for bidirectional energy distribution and connecting various renewable energy sources.
Tan-Quoc Duong   +3 more
doaj   +4 more sources

Non-Recursive Fixed-Time Convergence Observer and Extended State Observer

open access: yesIEEE Access, 2018
In this paper, non-recursive fixed-time convergence (FxTC) observers were proposed to deal with missions, such as state estimation and tracking differentiation. The observers were designed based on the time-scale paradigm, such that the parameters tuning
Feng Yang   +3 more
doaj   +2 more sources

A Super-Twisting Extended State Observer for Nonlinear Systems

open access: yesMathematics, 2022
Disturbances and uncertainties are the main concerns in control systems. To obtain this information in real time, the extended state observer is proposed as the core of the active disturbance rejection control.
Yi Li   +3 more
doaj   +1 more source

Observation of Robust Zero-Energy Extended States

open access: yesPhysical Review Applied, 2023
Topological edge states arise at the interface of two topologically-distinct structures and have two distinct features: they are localized and robust against symmetry protecting disorder. On the other hand, conventional transport in one dimension is associated with extended states, which typically do not have topological robustness.
Jannatul Ferdous   +3 more
openaire   +3 more sources

A Backstepping Controller Based on a Model-Assisted Extended State Observer for a Slice Rotor Supported by Active Magnetic Bearings

open access: yesActuators, 2022
To improve the robustness of a slice rotor system supported by active magnetic bearings (AMBs), here, we propose a backstepping controller based on a model-assisted extended state observer (MESO-BC). Based on a generalized extended state observer (GESO),
Boyuan Xu, Jin Zhou, Longxiang Xu
doaj   +1 more source

A Compound Control Method Based on the Adaptive Linear Extended State Observer and Global Fast Terminal Sliding Mode Control for Inertially Stabilized Platform

open access: yesMachines, 2022
To realize high-performance control for the inertially stabilized platform, a compound control method based on the adaptive linear extended state observer and global fast terminal sliding mode control is proposed.
Fa Fu, Xusheng Lei, Rui Wang
doaj   +1 more source

A continuous time model for observer-based frequency tracking

open access: yesResults in Control and Optimization, 2023
Frequency tracking has been the focus of several research works for decades. One common method is to utilize a state observer to dynamically estimate the frequency of the measured signal.
Mohammad Mahdi Share Pasand   +1 more
doaj   +1 more source

Finite-time ship formation control based on extended state observer

open access: yesZhongguo Jianchuan Yanjiu, 2023
ObjectiveIn order to solve the problems of most current ship formation control algorithms such as their long control cycle and poor timeliness, this paper proposes a finite-time control strategy based on an extended state observer (ESO).MethodsFirst, a ...
Jun NING   +5 more
doaj   +1 more source

Adaptive Semiglobal Nonlinear Output Regulation: An Extended-State Observer Approach [PDF]

open access: yesIEEE Transactions on Automatic Control, 2020
This paper proposes a new extended-state observer-based framework for adaptive nonlinear regulator design of a class of nonlinear systems, in the general nonequilibrium theory. By augmenting an extended-state observer with an internal model, one is able to obtain an estimate of the term containing uncertain parameters, which then makes it possible to ...
Lei Wang, Christopher M. Kellett
openaire   +2 more sources

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