Results 1 to 10 of about 43,547 (196)

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   +4 more sources

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   +3 more sources

Speed control for permanent magnet synchronous motor based on an improved extended state observer

open access: yesAdvances in Mechanical Engineering, 2018
An improved extended state observer is designed to eliminate the influences of speed control for a permanent magnet synchronous motor. The improved extended state observer is designed based on a new nonlinear function.
Bingyou Liu
doaj   +3 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   +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   +2 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

Extended state observer–based nonlinear cascade proportional–integral–derivative control of the nano quadrotor

open access: yesAdvances in Mechanical Engineering, 2016
The nano quadrotor is a nonlinear multi-input and multi-output system with strong coupling, which causes difficulties in control law design. In order to achieve a favorable performance, an extended state observer–based nonlinear cascade proportional ...
Xiaoran Li, Mou Chen
doaj   +2 more sources

Sliding Mode Control Based on High-Order Linear Extended State Observer for Near Space Vehicle

open access: yesInternational Journal of Aerospace Engineering, 2021
Aiming at the uncertainty and external disturbance sensitivity of the near space vehicles (NSV), a novel sliding mode controller based on the high-order linear extended state observer (LESO) is designed in this paper.
Ouxun Li   +3 more
doaj   +2 more sources

Extended State Observer-Based Fuzzy Adaptive Backstepping Force Control of a Deep-Sea Hydraulic Manipulator with Long Transmission Pipelines

open access: yesJournal of Marine Science and Engineering, 2022
The force tracking control of deep-sea hydraulic manipulator systems with long transmission pipelines is disposed via fuzzy adaptive backstepping control based on an extended state observer in this paper.
Yanzhuang Chen   +3 more
doaj   +2 more sources

Sliding Mode Controller Based on the Extended State Observer for Plant-Protection Quadrotor Unmanned Aerial Vehicles

open access: yesMathematics, 2022
Owing to the complex dynamics of quadrotor unmanned aerial vehicles (UAVs) and their susceptibility to unknown interferences in an actual working environment, the flight control accuracy of UAVs is extremely high.
Fengying Ma, Zhe Yang, Peng Ji
doaj   +2 more sources

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