Results 91 to 100 of about 169,803 (308)

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

Записки 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, Valeriy Yu. Zverev, Anna G. Zvonareva, Sergey A. Frolov, Anna A. Ivanchenko   +4 more
doaj  

Diagnostic procedures for antenna hydraulic drive systems [PDF]

Diagnostic, testing, and maintenance procedures for hydraulic drive systems for large steerable ...
Lombardo, J. J., Tatge, R. B., Winston, G. C.   +2 more
core   +1 more source

Hydraulic Stepper Drive - Conceptual Study, Design and Experiments

, 2016
Positionsgeregelte hydraulische Antriebe werden eingesetzt, wenn eine hohe Kraftdichte, schnelles Ansprechverhalten und ein kompaktes Design gefordert sind. Die dynamischen Anforderungen und hohen Genauigkeiten können zurzeit nur über Servo-Ventile in Kombination mit einer Regelung erreicht werden. Die Nachteile dieser Technologie sind die hohen Kosten
openaire   +2 more sources

Droplet Electricity Generators With Maximized Energy Collection Zone Enabled by Aloe‐Inspired Midrib and Cuticle

Advanced Materials, EarlyView.
An Aloe‐pinspired droplet electricity generator (A‐DEG) overcomes the limited energy collection zone of conventional DEGs by guiding impact droplets through a channeling midrib and artificial cuticle. The channeling midrib induces uni‐directional droplet spreading, while the artificial cuticle on the midrib further reinforces this behavior through its ...
Gibeom Lee, Eunbyeol Kim, Kyongtae Choi, Minjun Song, Sunmin Jang, Dongwhi Choi, Donghyun Seo, Min‐Gyu Lee, Younghoon Lee   +8 more
wiley   +1 more source

Investigation of transient processes based on axial pisnon hydromachines [PDF]

, 2012
Досліджено перехідні процеси в гідроприводах на основі дискретно регульованих аксіально-поршневих гідромашин з похилим блоком циліндрів, що виникають при включенні і зміну режиму роботи гідроприводу. Представлені результати експериментального дослідження
Nikolenko, I., Olejnichenko, A., Ryzhakov, A., Николенко, И. В., Олейниченко, А. А., Рыжаков, А. Н.   +5 more
core  

Understanding Operando Water Management in Hydroxide‐Exchange‐Membrane Fuel Cells

Advanced Materials Interfaces, EarlyView.
Effective water management is vital for high‐performance hydroxide‐exchange‐membrane fuel cells. Using a custom water‐flux station, this study quantifies how membrane thickness, microporous layers, and operating conditions dictate internal water transport.
Catherine M. Weiss, Shiyi Wang, Brian P. Setzler, Yushan Yan, Adam Z. Weber   +4 more
wiley   +1 more source

Dagnostics of hydraulic drive of airfield equipment

Вестник 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, A. A. Grats, V. D. Rogozhyn   +2 more
doaj   +1 more source

Bionic Design and Optimization on the Flow Channel of a Legged Robot Joint Hydraulic Drive Unit Based on Additive Manufacturing. [PDF]

Biomimetics (Basel), 2023
Huang Z, Du C, Wang C, Sun Q, Xu Y, Shao L, Yu B, Ma G, Kong X.   +8 more
europepmc   +1 more source

Hydrogel‐Based 3D‐Printable Stretchable Pressure Sensor

Advanced Materials Technologies, EarlyView.
We present a carbon‐black‐functionalized double‐network granular hydrogel (DNGH) pressure sensor capable of detecting pressures from 200 Pa, equivalent to a light finger touch, up to 500 kPa. The sensor exhibits signal drifts below 3.5% after 800 cycles and response times around 80 ms. Leveraging this broad sensing range, we 3D print this material into
Tianyu Yuan, Chenzhuo Li, Antonia Georgopoulou, John M. Kolinski, Esther Amstad   +4 more
wiley   +1 more source

Energy Efficiency Analysis of Hydraulic Excavators’ Swing Drive Transmission

Machines
The paper provides an analysis of the energy efficiency of the swing drive system of hydraulic excavators, which integrally includes a hydraulic motor and a planetary reducer.
Vesna Jovanović, Dragoslav Janošević, Dragan Marinković, Nikola Petrović, Boban Nikolić   +4 more
doaj   +1 more source