Results 41 to 50 of about 1,725,925 (401)

Determination of Nominal Dimensions and Permissible Variations in Dimensions of Critical Parts of Foreign Machinery Units

open access: yesИнженерные технологии и системы, 2022
Introduction. Developing and adapting domestic technologies aimed at the maintenance and repair of foreign equipment is impossible without design documentation.
Pavel A. Ionov   +4 more
doaj   +1 more source

Review of Recent Advances in the Drive Method of Hydraulic Control Valve

open access: yesProcesses, 2023
Hydraulic control valves are widely used in industrial production, agricultural equipment, construction machinery, and other large power equipment for controlling the pressure and flow of fluids in hydraulic systems.
Yanchao Li   +4 more
semanticscholar   +1 more source

Muscular hydraulics drive larva-polyp morphogenesis

open access: yesCurrent Biology, 2022
Development is a highly dynamic process in which organisms often experience changes in both form and behavior, which are typically coupled to each other. However, little is known about how organismal-scale behaviors such as body contractility and motility impact morphogenesis.
Anniek Stokkermans   +11 more
openaire   +4 more sources

Evaluating the relationship of parameters hydraulic impact device and its drive [PDF]

open access: yesНаучно-технический вестник Брянского государственного университета, 2020
The article deals with some questions about the influence of drive parameters on the characteristics of hydraulic shock devices, noted during the analysis of the results of mathematical modeling. Using mathematical modeling, numerical experiments were
Volkov N.N.   +4 more
doaj   +1 more source

CFD-Based Physical Failure Modeling of Direct-Drive Electro-Hydraulic Servo Valve Spool and Sleeve

open access: yesSensors, 2022
Direct-drive electro-hydraulic servo valves are used extensively in aerospace, military and control applications, but little research has been conducted on their service life and physical failure wear.
Guoqin Huang   +3 more
doaj   +1 more source

Mathematical model of position hydraulic drive

open access: yesВестник СибАДИ, 2017
The article presents a mathematical model of the position hydraulic drive, including a feedback loop rotary cylinder. A design scheme, compiled on the basis of the concept developed by the hydraulic circuit of hydraulic drive position, as well as the ...
A. V. Zhdanov
doaj   +1 more source

Modeling of working processes in the throttle-adjustable hydraulic drive of manipulation systems with conjoint movement of links during operation of mobile machines [PDF]

open access: yesНаучно-технический вестник Брянского государственного университета, 2019
The article proposes a functional-structural scheme and a mathematical model of working hydrodynamic processes in a throttle-adjustable hydraulic drive of handling systems (cranes-manipulators) of mobile transport-technological machines during the ...
Lagerev A.V., Lagerev I.A.
doaj   +1 more source

Calculation of design parameters of the bulldozer hydraulic drive [PDF]

open access: yesНаучно-технический вестник Брянского государственного университета
One of the main parameters of the hydraulic drive for moving the working element of road construction machines is the speed of movement of the hydraulic cylinder piston.
Letopolsky A.B., Teterina I.A.
doaj   +1 more source

Robust control of hydraulic tracked vehicle drive system based on quantitative feedback theory

open access: yesInternational Journal of Distributed Sensor Networks, 2020
To improve the control precision of the drive system of hydraulic tracked vehicles, we established a mathematical model of the drive system based on the analysis of structural characteristics of the high-clearance hydraulic tracked vehicles and the dual ...
Chenhui Zhu   +4 more
doaj   +1 more source

Dynamic Prediction of Performance Degradation Characteristics of Direct-Drive Electro-Hydraulic Servo Valves

open access: yesApplied Sciences, 2023
Direct-drive electro-hydraulic servo valves are widely used in the aerospace industry, in the military, and in remote sensing control, but there is little research and discussion on their performance degradation and service life prediction.
Juncheng Mi, G. Huang
semanticscholar   +1 more source

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