Results 11 to 20 of about 827 (133)

Design and Control of a Linear Rotary Electro-Hydraulic Servo Drive Unit

open access: yesApplied Sciences, 2023
In this paper, a new solution for an electro-hydraulic servo drive is proposed, which consists of two electro-hydraulic servo drives: one with a hydraulic cylinder and one with a hydraulic rotary motor.
Andrzej Milecki   +2 more
doaj   +1 more source

Development and application of adjustable electro-hydraulic actuator

open access: yesYou-qi chuyun, 2020
In view of the current situation that adjustable electro-hydraulic actuators for pipeline depend on import, effortshave been made to the localization of adjustable electro-hydraulic actuator to guarantee the safety of national energy, toimprove the ...
Xiliang YANG   +6 more
doaj   +1 more source

A Novel Electro-Hydraulic Compound Driving System With Potential Energy Regeneration Capability for Lifting Device

open access: yesIEEE Access, 2022
In order to realize the high energy efficiency and high performance motion control of the lifting device of construction machinery, this paper proposes an electro-hydraulic compound driving system that can regenerate the potential energy.
Shufei Qiao   +4 more
doaj   +1 more source

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

open access: yesMathematics, 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   +3 more
doaj   +1 more source

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

open access: yesSensors, 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   +4 more
doaj   +1 more source

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

open access: yesIEEE 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   +5 more
doaj   +1 more source

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

open access: yesEnergies, 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   +2 more
doaj   +1 more source

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

open access: yesEnergies, 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   +3 more
doaj   +1 more source

DESIGN METHOD FOR ELECTRO-HYDRAULIC CONVERTERSOF AIRCRAFT ENGINES

open access: yesАвіаційно-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   +1 more
doaj   +1 more source

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

open access: yesApplied 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   +3 more
doaj   +1 more source

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