Results 241 to 250 of about 24,820 (277)

Cascaded sliding mode force control for a single-rod electrohydraulic actuator

Neurocomputing, 2015
This paper investigates the force control problem of a single-rod electrohydraulic actuator system based on sliding mode strategy. On the basis of the force tracking error dynamics, in order to facilitate the controller design, the whole system is divided into a linear subsystem and a nonlinear subsystem. By forcing the output of nonlinear subsystem to
Bing Yu
exaly   +2 more sources

Dynamic surface control of the single-rod pneumatic actuator with disturbance rejection

2019 IEEE 8th International Conference on Fluid Power and Mechatronics (FPM), 2019
In this paper, An adaptive dynamic surface controller (ADSC) is developed for the pneumatic servo systems with the single-rod pneumatic actuator. The ADSC scheme contains a nonlinear feedback part, a parametric adaption part, and a disturbance observer part in the parallel structure. The nonlinear feedback part is synthesized by the backstepping method,
Chao-Quan Tang
exaly   +2 more sources

Nonlinear Adaptive Robust Control of Single-Rod Electro-Hydraulic Actuator With Unknown Nonlinear Parameters

IEEE Transactions on Control Systems Technology, 2008
In this paper, a nonlinear adaptive robust control method is presented for a single-rod electro-hydraulic actuator with unknown nonlinear parameters. Previous adaptive control methods of hydraulic systems always assume that the system's unknown parameters occur linearly, but, in a practical hydraulic system, unknown nonlinear parameters, which enter ...
Cheng Guan, Shuangxia Pan
exaly   +2 more sources

Modeling and characteristics analysis of single-rod hydraulic system using electro-hydrostatic actuator

International Journal of Precision Engineering and Manufacturing, 2012
Typical hydraulic system, although it is widely applied in industry because of its high energy density, its actual operational efficiency is only 23%–25% owing to very high energy losses, such as pressure loss and fluid dynamics loss, caused by the hydraulic system.
Joo-Young Oh, Gyu-Hong Jung, Geun-Ho Lee, Young-Jun Park, Chang-Seop Song   +4 more
exaly   +2 more sources

Position tracking control of electro-hydraulic single-rod actuator based on an extended disturbance observer

Mechatronics, 2015
Abstract This paper presents a nonlinear cascade controller based on an extended disturbance observer to track desired position trajectory for electro-hydraulic single-rod actuators in the presence of both external disturbances and parameter uncertainties.
Kai Guo, Jin-hui Fang
exaly   +2 more sources

Design, analysis and experimental research of a novel single-phase driven rod-type rotary piezoelectric actuator

Ultrasonics
Piezoelectric actuators operated by single-phase excitation are widely studied for precision drive applications, attributed to their reduced control complexity, adaptable design, and small form factor. Nevertheless, these actuators are primarily designed for linear motion, which is plagued by structural complexity, severe wear, and frequency drift ...
Ruifeng Wang
exaly   +3 more sources

Cascade active disturbance rejection control of single‐rod electrohydrostatic actuator

Asian Journal of Control, 2022
AbstractElectrohydrostatic actuators (EHAs) are used to replace traditional centralized hydraulic systems to reduce weight and improve efficiency and maintainability. This paper proposes a cascade active disturbance rejection control (C‐ADRC) method for single‐rod EHAs with parametric uncertainties and severe external disturbances.
Xiaoxia Han, Zhixiang Chen, Yongbao Feng, Jian Xie, Xiaoling Wei, Liejiang Wei   +5 more
openaire   +1 more source

Harmonic and synchronous compound control of a dual-valve controlled single-rod electro-hydraulic actuator

Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 2023
This article presents a novel harmonic and synchronous compound control scheme based on the dual-valve parallel structure for controlling a single-rod electro-hydraulic actuator with high-precision control and large-flow requirements. Harmonic and synchronous compound control consists of an adaptive robust control layer and a control law allocation ...
Tianzhu Wang, Qiang Zhang, Jinhui Fang, Jianhua Wei, Zhixin Li   +4 more
openaire   +1 more source

Desired compensation adaptive robust control of single-rod electro-hydraulic actuator

Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148), 2001
This paper presents a desired compensation adaptive robust control (DCARC) of single-rod electro-hydraulic actuator. Compared with the existing adaptive robust control (ARC) algorithms, the DCARC algorithm presented here has the unique feature that the adaptive model compensation part depends on the reference trajectory and parameter estimations only ...
Fanping Bu, Bin Yuo
openaire   +1 more source

Passivity based adaptive control of a two chamber single rod hydraulic actuator

2012 American Control Conference (ACC), 2012
A novel nonlinear function parameterization model was proposed for nonlinear adaptive controller design. This approach re-parameterizes the nonlinear function with unknown parameters linearly, which simplifies the adaptive controller design significantly.
Meng Wang, Perry Y. Li
openaire   +1 more source