Results 11 to 20 of about 40,379 (295)

Novel Concept for Electro-Hydrostatic Actuators for Motion Control of Hydraulic Manipulators

Energies, 2021
Self-contained hydraulic cylinders have gained popularity in the recent years but have not been implemented for high power articulated hydraulic manipulators.
Konrad Johan Jensen, Morten Kjeld Ebbesen, Michael Rygaard Hansen   +2 more
doaj   +1 more source

Multi-physic system simplification method applied to a helicopter flight axis active control [PDF]

, 2012
A helicopter flight axis control, which is a complex multi-physic system, is modelled using an energetic based graphical tool: the Energetic Macroscopic Representation.
BARRE, Pierre-Jean, GOMAND, Julien, MALBURET, François, MARTIN, Mikael   +3 more
core   +6 more sources

Development and Control of an Electro-Hydraulic Actuator System for an Exoskeleton Robot

Applied Sciences, 2019
Exoskeleton robots have been developed in various fields and are divided into electric and hydraulic exoskeletons according to the actuator type. In the case of hydraulic robots, because a unidirectional pump is applied, there are limitations to the ...
Dongyoung Lee, Buchun Song, Sang Yong Park, Yoon Su Baek   +3 more
doaj   +1 more source

Data Fusion Based on an Iterative Learning Algorithm for Fault Detection in Wind Turbine Pitch Control Systems

Sensors, 2021
In this article, we propose a recent iterative learning algorithm for sensor data fusion to detect pitch actuator failures in wind turbines. The development of this proposed approach is based on iterative learning control and Lyapunov’s theories ...
Leonardo Acho, Gisela Pujol-Vázquez
doaj   +1 more source

Nonlinearities in Control Description and Design of an Electro Hydraulic Actuator for Flexible Nozzle Thrust Vector Control

Actuators, 2018
This paper presents all the significant nonlinearities that exist in the description of an electro hydraulic actuator for flexible nozzle thrust vector control. Starting from practical possibilities of the theory of a nonlinear system (which are based on
Dragan Nauparac, Dragan Prsic, Marko Milos   +2 more
doaj   +1 more source

Active Disturbance Rejection Position Synchronous Control of Dual-Hydraulic Actuators with Unknown Dead-Zones

Sensors, 2020
In this paper, an integrated control strategy of position synchronization control for dual-electro-hydraulic actuators with unknown dead-zones is proposed. The unified control scheme consists of two parts: One is adaptive dead-zone inverse controllers of
Lixin Wang, Dingxuan Zhao, Fucai Liu, Qian Liu, Zhuxin Zhang   +4 more
doaj   +1 more source

Research on impedance network modeling and output characteristics of magnetostrictive electro-hydraulic actuator

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2023
Magnetostrictive electro-hydraulic actuator (M-EHA) is a highly integrated hydraulic servo device with very complex movement and conduction processes. The output performance could be affected by many factors.
Menglun TAO, Feng LIN, Liang SHU, Hongbi DENG, Yeheng ZHANG   +4 more
doaj   +1 more source

Design an intelligent controller for full vehicle nonlinear active suspension systems [PDF]

, 2011
The main objective of designed the controller for a vehicle suspension system is to reduce the discomfort sensed by passengers which arises from road roughness and to increase the ride handling associated with the pitching and rolling movements.
Aldair, A A, Wang, W J
core   +2 more sources

Bond Graph Modeling and Simulation of Hybrid Piezo-Flexural-Hydraulic Actuator

Engineering Proceedings
In this study, a hybrid piezo-flexural-hydraulic actuator is modeled and simulated using bond graph methodology. The hybrid actuator comprises piezoelectric stack actuator, mechanical flexural amplifier, and hydraulic piston actuator.
Rudraksha Kelkar, Mohith Santhya, Mithun Kanchan, Omkar S. Powar   +3 more
doaj   +1 more source

Disturbance Observer Based Finite Time Trajectory Tracking Control for a 3 DOF Hydraulic Manipulator Including Actuator Dynamics

IEEE Access, 2018
This paper gives the kinematic description and mathematical dynamic model of a three-degrees-of-freedom manipulator, including hydraulic actuator dynamics, and then proposes a disturbance observer-based robust control scheme for the position and torque ...
To Xuan Dinh, Tran Duc Thien, Truong Hoai Vu Anh, Kyoung Kwan Ahn   +3 more
doaj   +1 more source