Results 41 to 50 of about 54,711 (246)

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 ...
Wenguang Jiang   +7 more
openaire   +1 more source

Design and application of automation control system of fully mechanized coal mining face

open access: yesGong-kuang zidonghua, 2014
In view of problem of low efficiency of automation coal mining on fully mechanized coal mining face, a design scheme of automation control system of fully mechanized coal mining face was proposed, composition and functions of the system were introduced ...
SUN Bingke, HE Yonghua
doaj   +1 more source

Parametric Vibration Analysis of a Six-Degree-of-Freedom Electro-Hydraulic Stewart Platform

open access: yesShock and Vibration, 2021
Electro-hydraulic Stewart 6-DOF platform is a 6-DOF parallel mechanism combined with the electro-hydraulic servo control system, which is widely used in the field of construction machinery. In actual working conditions, the flow and pressure pulsation of
Xiaoming Yuan   +3 more
doaj   +1 more source

Analysis on vibration for a high-frequency electro-hydraulic cleaning system controlled by improved two-dimensional rotary valve

open access: yesAdvances in Mechanical Engineering, 2018
Conventional high-frequency cleaners utilize functional materials (e.g. piezoelectric ceramics, magnetostrictive materials) excited by electrical signals to realize high-frequency vibration, even ultrasonic vibration.
Xiancheng Ji, Yan Ren, Hesheng Tang
doaj   +1 more source

Transport coefficients for electrolytes in arbitrarily shaped nano and micro-fluidic channels

open access: yes, 2005
We consider laminar flow of incompressible electrolytes in long, straight channels driven by pressure and electro-osmosis. We use a Hilbert space eigenfunction expansion to address the general problem of an arbitrary cross section and obtain general ...
  +14 more
core   +1 more source

Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration

open access: yesAdvanced Functional Materials, EarlyView.
Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley   +1 more source

Modelling, Simulation and Experimental Verification of a 3 DOF Moving Platform with Parallel Kinematics and Electro-Hydraulic Proportional / Servo Control System

open access: yesCommunications
Hydraulic motion platforms are widely utilized in various environments due to their capacity to bear heavy loads and provide long actuator strokes. The predominant control system employed for hydraulic motion platforms is the electro-hydraulic servo ...
Ezz Eldin Ibrahim   +4 more
doaj   +1 more source

Keys of electro-hydraulic control of support used for coal plough unit

open access: yesGong-kuang zidonghua, 2014
Structure of electro-hydraulic control system of support used for coal plough unit was introduced and keys of electro-hydraulic control of support as well as solutions were focused on including precision of support pushing, support quick-moving and ...
WU Qing, LI Yong, GONG Fuzhang
doaj   +1 more source

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   +1 more source

Metal spinning of axially symmetric parts using proportional electro-hydraulic drive with tracking system [PDF]

open access: yes, 2015
В роботі розглянуті методи та верстатне обладнання для виконання процесу ротаційної витяжки. Запропоновано застосувати для виконання процесу ротаційної витяжки електрогідравлічний привод зі стежною системою, що дає можливість виготовляти деталі на ...
Lozinskyi, D. O.   +11 more
core  

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