Results 61 to 70 of about 1,121,221 (150)

Design of Electro-Hydraulic Double Helix Drive Orienter for Coiled Tubing Drilling

open access: yesShiyou jixie, 2020
To address the problems of time-consuming, low accuracy of current coiled tubing drilling hydraulic orienter, and the complicated structure of electro-hydraulic drive orienter, an electro-hydraulic double helix drive orienter for coiled tubing drilling ...
Ma Weiguo, Wang Li, Wang Chengfei
doaj  

Study of the dynamics of an electro-hydraulic servo drive physical model on FESTO learning system

open access: yes
The task of conducting research for dynamics improvement of an electro-hydraulic servo drive by including compensators on FESTO hydraulic learningsystem with low permissible inertial loads on the drive was considered.
Kulakov B., Kulakov D.
core   +1 more source

Estimating the availability of hydraulic drive systems operating under different functional profiles through simulation [PDF]

open access: yes, 2015
Hydraulic drive systems are widely used in a variety of industrial applications where high torque and low speed rotational power are required. The advantages include maximum torque from zero speed, continuously variable speed within wide limits, high ...
L�fstrand, Magnus   +4 more
core   +1 more source

Dagnostics of hydraulic drive of airfield equipment

open access: yesВестник СибАДИ
Introduction. The article presents an overview of modern diagnostic methods for mobile machines. The directions of diagnosis are outlined: with the applications of algorithms based on the use of a complex of controllers designed to collect and store up ...
I. V. Leskovets   +2 more
doaj   +1 more source

Evaluation of the energy efficiency of functioning and increase in the operating time of hydraulic drives of sucker-rod pump units in difficult operating conditions

open access: yesЗаписки Горного института, 2023
The necessity of improving the drives of the sucker-rod hydraulic pump units (SRHP), operated in conditions of marginal and complicated wells, is substantiated. For complicated oil production conditions, it is promising to use the SRHP drive, which makes
Dmitriy I. Shishlyannikov   +4 more
doaj  

Dynamic performance of auxiliary hydraulic power unit based electro-hydraulic variable speed drive system

open access: yes, 2017
Inability of dynamic performances, especially the acceleration response, strongly inhibits the application of electro-hydraulic variable speed drive, even though its intrinsic energy-saving potential.
Ming Xu   +3 more
core   +1 more source

Theoretical Analysis of Step-Down of Hydraulic Cylinder Motion for Control Rod Hydraulic Drive System Based on Model II

open access: yes, 2017
Hydraulic Control Rod Drive Technology (HCRDT) is a newly invented patent and Institute of Nuclear and New Energy Technology Tsinghua University own HCRDT’s independent intellectual property rights.
Yuzheng Li   +3 more
core   +1 more source

Test rig for a hydraulic drive under switched inertance control

open access: yes, 2013
The paper presents a test rig equipped with control, measuring and registration hardware for the examination of dynamics and power efficiency of a hydraulic drive with a digital flow controller as one of the most promising means of control.
P. I. Greshniakov   +5 more
core   +1 more source

Hydraulic linear drive for paralell kinematics structures of robots

open access: yes, 2014
This thesis describes the design of linear units with hydraulic drive for the robot with parallel kinematic structure. The theoretical part deals with the historical development of parallel kinematic structures, its design proposals for individual ...
Pavlica, Jiří
core  

Analytical study of an improved mathematical model of the hydraulic drive of the garbage truck’s sealing plate mechanism, taking into account the wear of its hydraulic cylinder

open access: yesПроблеми трибології
The article is dedicated to the analytical study of the improved mathematical model of the hydraulic drive of the garbage truck’s sealing plate mechanism, in which the influence of the wear of the hydraulic cylinder on its operation is additionally taken
O.V. Bereziuk   +4 more
doaj   +1 more source

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