Results 21 to 30 of about 268 (133)

Robust control design of an electro-hydraulic actuator [PDF]

2014 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, 2014
The paper proposes a hierarchical control design of an electro-hydraulic actuator. The high-level hydromotor is modeled with a linear form with parametric uncertainty, while the low-level spool valve is modeled with a polynomial system. The subsystems require different control strategies.
Balázs Németh 0001, Balázs Varga, Péter Gáspár   +2 more
openaire   +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

Motion Synchronization Control for a Large Civil Aircraft’s Hybrid Actuation System Using Fuzzy Logic-Based Control Techniques

Mathematics, 2023
The motion synchronization of the hybrid actuation system (composed of a servo-hydraulic actuator and an electro-mechanical actuator) is very important for all applications, especially for civil aircraft.
Waheed Ur Rehman, Xingjian Wang, Zeeshan Hameed, Muhammad Yasir Gul   +3 more
doaj   +1 more source

Energy and Operation Characteristics of Electric Excavator With Innovative Hydraulic-Electric Dual Power Drive Boom System

IEEE Access, 2023
In the existing electric excavators, the energy efficiency of the hydraulic system is less than 30% due to a large amount of throttling loss and waste of potential energy.
Yunxiao Hao, Long Quan, Shufei Qiao, Lei Ge, Zepeng Li, Bin Zhao   +5 more
doaj   +1 more source

Proportional–Integral–Derivative Controller Design Using an Advanced Lévy-Flight Salp Swarm Algorithm for Hydraulic Systems

Energies, 2020
To improve the control ability of proportional−integral−derivative (PID) controllers and increase the stability of force actuator systems, this paper introduces a PID controller based on the self-growing lévy-flight salp swarm algorithm (
Yuqi Fan, Junpeng Shao, Guitao Sun, Xuan Shao   +3 more
doaj   +1 more source

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

DESIGN METHOD FOR ELECTRO-HYDRAULIC CONVERTERSOF AIRCRAFT ENGINES

Авіаційно-космічна техніка та технологія, 2019
The main trends in the use of aircraft engines actuators, that convert electrical commands into mechanical and hydraulic, are presented. Examples of the use of modern engine control systems are described, in which hydraulic cylinders are used to move the
Евгений Александрович Кононыхин, Сергей Валериевич Епифанов   +1 more
doaj   +1 more source

Identification Of Electro-Hydraulic Actuator Using Fractional Model [PDF]

International Journal on Smart Sensing and Intelligent Systems, 2016
Abstract Electro-hydraulic actuator (EHA system) identification is to describe the characteristic of the system that useful for prediction or control system design. There are numerous methods of EHA modeling but there has not been much model using fractional-order (FO) model. In this work, integer-order (IO) model
Yusof, N. M., Ishak, N., Adnan, R., Sam, Y. M., Tajjudin, M., Rahiman, M. H. F.   +5 more
openaire   +1 more source

Active Load-Sensitive Electro-Hydrostatic Actuator for More Electric Aircraft

Applied Sciences, 2020
In the flight control system, using an electro-hydrostatic actuator (EHA) instead of the currently used relatively mature electro-hydraulic valve-controlled actuator, there are three prevailing concerns, namely heating, size, and stiffness.
Ligang Huang, Tian Yu, Zongxia Jiao, Yanpeng Li   +3 more
doaj   +1 more source

Self-Tuning Control of an Electro-Hydraulic Actuator System [PDF]

International Journal on Smart Sensing and Intelligent Systems, 2011
Abstract Due to time-varying effects in electro-hydraulic actuator (EHA) system parameters, a selftuning control algorithm using pole placement and recursive identification is presented. A discrete-time model is developed using system identification method to represent the EHA system and residual analysis is used for model validation.
Ghazali, Rozaimi, Md Sam, Yahaya, Rahmat, Mohd Fua'ad, Jusoff, Kamaruzaman, Zulfatman,, Mohd Hashim, Abd Wahab Ishari   +5 more
openaire   +1 more source