Results 51 to 60 of about 13,479 (311)

Design and Research on Electro-Hydraulic Drive and Energy Recovery System of the Electric Excavator Boom

open access: yesEnergies, 2022
The hydraulic accumulator has the advantages of high power density, fast response, stable operation and high cost performance. However, compared with the electric energy storage method, the hydraulic accumulator has low energy density and large pressure ...
Lin Li   +5 more
doaj   +1 more source

Dual‐Mode Film Based on Highly Scattering Nanofibers and Upcycled Chips‐Bags for Year‐Round Thermal Management

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent radiative cooling devices, adaptable to various weather conditions, have the potential for year‐round energy savings. This study introduces a sustainable dual‐mode film made from polycaprolactone nanofibers and upcycled chip bags for effective thermal management.
Qimeng Song   +4 more
wiley   +1 more source

Распределения мощности силовой установки гидропривода в технологическом процессе копания одноковшового экскаватора

open access: yesВестник СибАДИ, 2017
Technological capabilities such digger is the excavator, depend on the power of the power plant, the type of work equipment, bucket capacity and drive systems.
Vitaliy Vladimirovich Savinkin   +1 more
doaj  

3D Bioinspired Hair‐Based Solar Evaporator for Efficient Water Harvesting

open access: yesAdvanced Functional Materials, EarlyView.
A bio‐derived solar evaporator inspired by blackbody radiation is developed using human hair waste. The vertically aligned hair structure enables broadband light absorption, efficient thermal localization, and rapid water transport, achieving high evaporation rates and stable desalination performance.
Yi Liu   +10 more
wiley   +1 more source

Model Predictive Control Considering Load Disturbance of Ship-Borne Hydraulic Parallel Platform

open access: yesIEEE Access
The ship stabilization platform effectively compensates for the ship’s multi-dimensional rocking motion, ensuring the stability of onboard equipment relative to the inertial system.
Hongbin Qiang   +5 more
doaj   +1 more source

Simulation Research of Hydraulic Stepper Drive Technology Based on High Speed On/Off Valves and Miniature Plunger Cylinders

open access: yesMicromachines, 2021
The technology for stepper drive that can achieve accurate motion in the hydraulic field has always been urgently needed in the industry. This paper proposes a hydraulic stepper drive based on five high speed on/off valves and two miniature plunger ...
Hanyu Qiu, Qi Su
doaj   +1 more source

Removal of Steroid Hormone Micropollutants by an Electrochemical Carbon Nanotube Membrane Flow‐Through Reactor: Role of Concentration and Degradation Mechanisms

open access: yesAdvanced Functional Materials, EarlyView.
A flow‐through electrochemical membrane reactor equipped with a carbon nanotube membrane eliminates the mass transfer limitation, achieving removals >97.5% for steroid hormone (SH) micropollutants through electrochemical adsorption and degradation, over a broad initial concentration varying from 50 to 106 ng L−1.
Siqi Liu   +2 more
wiley   +1 more source

Investigation of the mathematical model of volumetric hydraulic drive with relay control as applied to the cargo crane winch [PDF]

open access: yesНаучно-технический вестник Брянского государственного университета
The known variants of volumetric hydraulic drives of lifting and technological mechanisms are considered and analyzed. The areas of application of pumping and accumulator hydraulic drives, with various types of regulation, and options for their ...
Zayarny S.L., Baranov K.A.
doaj   +1 more source

Continuous‐Flow Photocatalytic Degradation of Glyphosate and Aminomethylphosphonic Acid Under Simulated Sunlight with TiO2‐Coated Poly(vinylidene fluoride) Membrane

open access: yesAdvanced Functional Materials, EarlyView.
Glyphosate (GLY) and its primary metabolite, aminomethylphosphonic acid (AMPA), are photodegraded using a poly(vinylidene fluoride) membrane with immobilized titanium dioxide (PVDF‐TiO2) in a continuous flow‐through operation under solar light. At optimized conditions, the PVDF‐TiO2 membrane achieved 95% GLY and 80% AMPA removal with •O2− as the ...
Phuong B. Trinh   +4 more
wiley   +1 more source

TRACKING CONTROL FOR A HYDRAULIC DRIVE WITH A PRESSURE COMPENSATOR [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2015
A problem of tracking control is considered for a hydraulic drive with a pressure compensator that is widespread in the equipment of heavy-duty machines. Method.
S. V. Aranovskiy   +2 more
doaj   +1 more source

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