Results 11 to 20 of about 51,710 (183)

A Study on the Electro-Hydraulic Coupling Characteristics of an Electro-Hydraulic Servo Pump Control System

open access: yesProcesses, 2022
Electro-hydraulic servo pump control belongs to an electro-hydraulic coupling motion control system, which involves the mutual penetration and integration of mechanical, hydraulic, electrical, control, and other disciplines, as well as the time-varying, uncertain, multisource, and multifield problems of the internal and external excitation of the ...
Guishan Yan, Gexin Chen, Chao Ai
exaly   +3 more sources

Software defect management of electro hydraulic control system of hydraulic support

open access: yesGong-kuang zidonghua, 2016
For software defect problem of electro hydraulic control system of hydraulic support, software structural features of the electro-hydraulic control system were analyzed from software testing method, software defect management framework was built ...
NIU Jianfeng, BAI Yongsheng, GUO Dinghe
doaj   +2 more sources

Development of automatic test platform of electro-hydraulic control system of hydraulic support

open access: yesGong-kuang zidonghua, 2018
In view of problems of high cost, low test efficiency and unable to record test data automatically of functional test methods of existing electro-hydraulic control system of hydraulic support, and in order to verify adaptability of control logic of the ...
LI Junshi
doaj   +2 more sources

Review on Inlet/Outlet Oil Coordinated Control for Electro-Hydraulic Power Mechanism under Sustained Negative Load

open access: yesApplied Sciences, 2018
Speed control and smooth regulation in an electro-hydraulic motion control system under negative load (over-running load) are crucial to mobile machineries, vehicles, and motion simulation equipment.
Wei Liu, Yunhua Li, Dong Li
doaj   +2 more sources

Design of transparent communication network system of electro-hydraulic control system of hydraulic support

open access: yesGong-kuang zidonghua, 2017
Current communication network system of electro-hydraulic control system of hydraulic support adopts no host control method to transmit data, and data generation time, generation quantity and delivery time has uncertainty,so as to cause communication ...
WANG Shuming
doaj   +2 more sources

Design and experimental study of electro-hydraulic buffer control valve for hydraulic support push cylinder [PDF]

open access: yesGong-kuang zidonghua
During the pushing and pulling operations of the push cylinder of the hydraulic support in the working face, the instantaneous pressure surge at startup is severe, which can lead to cylinder bulging, expansion, seal failure, or even the fracture of ...
JIANG Sulong   +4 more
doaj   +2 more sources

Finite-Time Output Feedback Control for Electro-Hydraulic Servo Systems with Parameter Adaptation

open access: yesMachines, 2021
Measurement noise, parametric uncertainties, and external disturbances broadly exist in electro-hydraulic servo systems, which terribly deteriorate the system control performance. To figure out this problem, a novel finite-time output feedback controller
Luyue Yin   +3 more
doaj   +2 more sources

A New Active Disturbance Rejection Control Tuning Method for High-Order Electro-Hydraulic Servo Systems

open access: yesActuators
In our industry, active disturbance rejection control already has been used to enhance the performance of the electro-hydraulic servo systems, despite the fact that electro-hydraulic servo systems are usually reduced to first-order and second-order ...
Junli Zhang   +3 more
doaj   +2 more sources

Sliding Mode Control of Spool Position for a Lead-Type Electro-Hydraulic Proportional Multi-Way Valve Based on Disturbance Observation

open access: yesMachines
Electro-hydraulic proportional multi-way valves are widely used in construction machinery and equipment, and their performance directly affects the operation performance of construction machinery and equipment.
Junxue Feng   +6 more
doaj   +2 more sources

The Design and Simulation of Electro-Hydraulic Velocity Control System [PDF]

open access: yes, 2011
In this paper, the principle of electro-hydraulic proportional control system are introduced, electro-hydraulic velocity control system are designed and can realize volevity control with high accuracy. In the system, relative amplitude abundant degree and phasic abundant degree and corresponding frequency of passing of Body system is easily obtained ...
Fengtao Lin, Lin, Fengtao
openaire   +2 more sources

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