Results 11 to 20 of about 12,946 (228)

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

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

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 and Performance Evaluation of an Electro-Hydraulic Camless Engine Valve Actuator for Future Vehicle Applications

Sensors, 2017
This paper details the new design and dynamic simulation of an electro-hydraulic camless engine valve actuator (EH-CEVA) and experimental verification with lift position sensors.
Kanghyun Nam, Kwanghyun Cho, Sang-Shin Park, Seibum B. Choi   +3 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

Development of Flexible Electro-Hydraulic Spherical Actuator

Journal of Robotics and Mechatronics, 2022
Voluntary rehabilitation at home helps to prevent the joint contracture after medical treatment. Our previous studies concerned a low-cost portable rehabilitation device using a flexible spherical pneumatic actuator as a passive exercise device. However, the device requires a bulky compressor to drive it.
Wataru Kobayashi, Hiroaki Tamaki, Tetsuya Akagi, Shujiro Dohta, So Shimooka   +4 more
openaire   +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

Circle grid fractal plate as a turbulent generator for premixed flame: an overview [PDF]

, 2013
This review paper focuses to ascertain a new approach in turbulence generation on the structure of premixed flames and external combustion using a fractal grid pattern.
A Khalid, B Manshoor, Idris M S, Laizet S, M F Othman, Mandelbrot B, Mohd Adib M A H, Naga Sarada S, Nedic J, Queiros-Conde D, Salim S M M, Seoud R E Vassilicos J C, Sponfeldner T, Syam Sundar L, Tahseen T A, Tahseen T A, Tennekes, Vijaya Lakshmi B   +17 more
core   +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

Adaptive Dynamic Surface Control for Active Suspension With Electro-Hydraulic Actuator Parameter Uncertainty and External Disturbance

IEEE Access, 2020
In this paper, a new adaptive dynamic surface control strategy is proposed to deal with the uncertainty parameters of electro-hydraulic actuator and unknown external disturbances of vehicle active suspension system.
Shuang Liu, Ruolan Hao, Dingxuan Zhao, Zhijian Tian   +3 more
doaj   +1 more source