Results 11 to 20 of about 355 (157)

A DC Bias Suppression Sensorless Control for SPMSM Based on Extended State Observer with Improved Position Estimation Accuracy

Energies
In sensorless control systems of permanent magnet synchronous motors (PMSMs), the traditional linear extended state observer (LESO) is preferred due to its simplicity and ease of implementation.
Jinpu Lin, Manfeng Dou, Haiyun Jia, Shuhao Yan, Mengxi Dang, Dongdong Zhao, Zhiguang Hua   +6 more
doaj   +2 more sources

Novel Active Disturbance Rejection Control Based on Nested Linear Extended State Observers

Applied Sciences, 2020
In this paper, a Novel Active Disturbance Rejection Control (N-ADRC) strategy is proposed that replaces the Linear Extended State Observer (LESO) used in Conventional ADRC (C-ADRC) with a nested LESO.
Wameedh Riyadh Abdul-Adheem, Ahmad Taher Azar, Ibraheem Kasim Ibraheem, Amjad J. Humaidi   +3 more
doaj   +2 more sources

Extended State Observer-Based Sliding Mode Control Design of Two-DOF Lower Limb Exoskeleton

Actuators, 2023
Due to some model uncertainties and unknown friction disturbances that exist in the 2-DOF lower limb exoskeleton, a linear extended state observer (LESO) is proposed to estimate the unmeasurable angular velocity of two joints and the lumped uncertainties
Jiyu Zhang, Wei Gao, Qing Guo
doaj   +2 more sources

The Sliding Mode Control of the Drum Water Level Based on Extended State Observer

IEEE Access, 2019
The characteristics of the drum water level system are strong disturbance, nonlinear, strong coupling and multivariable. The sliding mode control (SMC) technique has the advantages of quick response and strong robustness.
Cuiping Pu, Jie Ren, Jianbo Su
doaj   +3 more sources

Assistive Mobility Control of a Robotic Hip-Knee Exoskeleton for Gait Training [PDF]

Sensors, 2022
In this paper, we present an assistive mobility control for a robotic hip-knee exoskeleton intended for gait training. The robotic hip-knee exoskeleton is designed with an active flexion/extension and a passive abduction/adduction at each hip joint and ...
Chuan Changcheng, Yi-Rong Li, Chun-Ta Chen   +2 more
doaj   +2 more sources

Altitude Control of Powered Parafoil Using Fractional Sliding-Mode Backstepping Control Combined with Extended State Observer

Applied Sciences, 2022
This paper presents a method of altitude control of the powered parafoil with uncertainties and disturbances based on sliding-mode backstepping control combined with a linear extended state observer (LESO).
Erlin Zhu, Youwu Du, Wei Song, Haitao Gao   +3 more
doaj   +2 more sources

Vector Speed Regulation of an Asynchronous Motor Based on Improved First-Order Linear Active Disturbance Rejection Technology

Energies, 2020
Asynchronous motors are widely used in industry and agriculture because of their simple structure, low cost, and easy maintenance. However, due to the coupling and uncertain factors of the actual operation of the motor, a traditional controller cannot ...
Xuesong Zhou, Chenglong Wang, Youjie Ma
doaj   +2 more sources

Disturbance Rejection Attitude Control for a Quadrotor: Theory and Experiment

International Journal of Aerospace Engineering, 2021
In this article, an attitude tracking controller is designed for a quadrotor unmanned aerial vehicle (UAV) subject to lumped disturbances. Firstly, the attitude dynamical model of the quadrotor under external disturbances is established. Subsequently, an
Li Ding, Qing He, Chengjun Wang, Rongzhi Qi   +3 more
doaj   +2 more sources

Speed Control of Permanent Magnet DC Motor with Friction and Measurement Noise Using Novel Nonlinear Extended State Observer-Based Anti-Disturbance Control

Energies, 2019
In this paper, a novel finite-time nonlinear extended state observer (NLESO) is proposed and employed in active disturbance rejection control (ADRC) to stabilize a nonlinear system against system’s uncertainties and discontinuous disturbances using
Amjad J. Humaidi, Ibraheem Kasim Ibraheem   +1 more
doaj   +2 more sources

A Camera Stabilized Platform Based on the Feedforward Strap-Down Control with Approximate Dead-Zone Model and a Compensator with LESO

Machines, 2023
A feedforward strap-down control with a compensator base on the linear extended state observer (LESO) is proposed for a miniaturized camera stabilized platform, which reduces the influence of the dead zone in speed regulation and uncertainties in ...
Tianlei Fu, Yanbin Gao, Lianwu Guan, Chao Qin   +3 more
doaj   +2 more sources