Results 11 to 20 of about 13,479 (311)

Active Hydraulic Oil Pressure Measurement System as a Source of Information About the Technical Condition of the Aircraft Hydrostatic Drive [PDF]

open access: yesSensors
Current methods for assessing the technical condition of aircraft hydrostatic drives require disassembly of the hydraulic components and their testing on test stands.
Leszek Ułanowicz
doaj   +2 more sources

Simulation Modeling of the Adaptive System for Hydraulic Drives of a Stalk Forage Separator

open access: diamondЖурнал інженерних наук
The article aims to increase the accuracy of the block-portioned stem feed separator, reducing unproductive power losses and dynamic loads in the hydraulic drive of the separator by developing scientific fundamentals based on nonlinear mathematical ...
Natalia Veselovska   +4 more
doaj   +2 more sources

Design, simulation, and experimental study of hydrostatic drive system for wide-span farming platform. [PDF]

open access: yesPLoS ONE
A versatile, robotic, and multi-functional wide-span farming platform, commonly known as a gantry tractor, can reduce soil compaction and enhance field production efficiency.
Jiaxiang Ma   +4 more
doaj   +2 more sources

Dagnostics of hydraulic drive of airfield equipment

open access: diamondВестник 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   +2 more sources

A hydraulic drive with self-oscillating operation for reciprocating downhole pump

open access: diamondИзвестия высших учебных заведений: Нефть и газ
Rod pumps (pumping units) are widely used for pumping products from production wells. Their simplicity and low cost are undoubted advantages. However, when operating in inclined wells, these pumps are susceptible to accidents caused by friction forces ...
Yu. A. Burian   +3 more
doaj   +3 more sources

Design and Control of a Linear Rotary Electro-Hydraulic Servo Drive Unit

open access: yesApplied Sciences, 2023
In this paper, a new solution for an electro-hydraulic servo drive is proposed, which consists of two electro-hydraulic servo drives: one with a hydraulic cylinder and one with a hydraulic rotary motor.
Andrzej Milecki   +2 more
doaj   +1 more source

Hydraulic Switching Control Supplementing Speed Variable Hydraulic Drives [PDF]

open access: yesActuators, 2020
Primary control of linear motion by variable speed electric motors driving a hydraulic cylinder via a constant displacement pump is an established and successful concept with a frequent use in industry. One problem arises when low or zero motion speed has to be realized under high pump pressure conditions.
Philipp Zagar   +3 more
openaire   +2 more sources

Modeling and Dynamic Performance Analysis of Hydraulic Top Drive Main Transmission System with Long Hydraulic Pipelines

open access: yesGeofluids, 2022
Hydraulic top drive is the main power component used to drive drilling tools rotating to drill a hole for drilling rigs. Its main transmission system was built with hydraulic power source and hydraulic actuators.
Yuanling Shi, Pingsong Zhang
doaj   +1 more source

The extending length calculation of hydraulic drive non-metallic completion screen pipe running into ultra-short radius horizontal well

open access: yesPetroleum Exploration and Development, 2022
Focusing on the extending length restriction of the completion screen pipe resistance running into ultra-short radius horizontal well, this paper proposed technology of hydraulic drive completion tubular string running into ultra-short radius horizontal ...
Yansen BI   +3 more
doaj   +1 more source

Structural optimization of the hydraulic drive of a mobile transport and reloading rope complex based on pareto-optimal solutions [PDF]

open access: yesНаучно-технический вестник Брянского государственного университета, 2020
The article proposes a method of structural optimization of the hydraulic drive of mobile transport and reloading rope complexes based on special multi-axle chassis with increased carrying capacity and cross-country ability.
Tarichko V.I.
doaj   +1 more source

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