Results 121 to 130 of about 169,803 (308)
Development and optimization of the control device for the hydraulic drive of the belt conveyor
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie ŚrodowiskaDesigning new hydraulic equipment requires consideration of the peculiarities of the operating modes of the technological machines. This particularly applies to the hydraulic drive of a belt conveyor, which operates under variable load conditions ...
Leonid Polishchuk +4 more
doaj +1 more source
Radiative Cooling by Green(er) Solvents‐Upcycled Polyvinyl Chloride From Drug Blisters Waste
Advanced Optical Materials, EarlyView.This study explores upcycling poly(vinyl chloride) (PVC) from used pharmaceutical blisters into sustainable radiative cooling materials. Using solvent separation and membrane fabrication, PVC was converted into white membranes paired with aluminum foil.
Andrea Lanfranchi +2 more
wiley +1 more source
A hydraulic drive with self-oscillating operation for reciprocating downhole pump
Известия высших учебных заведений: Нефть и газRod 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 +1 more source
Advanced Robotics Research, EarlyView.A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
wiley +1 more source
Space Transportation System solid rocket booster thrust vector control system [PDF]
The Solid Rocket Booster, Thrust Vector Control (TVC) system was designed in accordance with the following requirements: self-contained power supply, failsafe operation, 20 flight uses after exposure to seawater landings, optimized cost, and component ...
Mccool, A. A. +2 more
core +1 more source
Hydraulic linear drive for paralell kinematics structures of robots [PDF]
, 2014 Diplomová práce se zabývá návrhem lineární jednotky s hydraulickým pohonem pro robot s paralelní kinematickou strukturou. V teoretické části se práce věnuje historickému vývoji paralelních kinematických struktur, jejich konstrukčním návrhům, jednotlivým ...
Pavlica, Jiří
core
Advanced Robotics Research, EarlyView.This article introduces a soft wearable eyelid sling device incorporating a hydraulic soft artificial muscle (SAM) for achieving complete closure of an eyelid. The SAM is driven by a cam mechanism that provides a displacement profile closely matched with those of a healthy eyelid.
Patrick Pruscino +7 more
wiley +1 more source
Electro-Hydraulic Variable-Speed Drive Network Technology—First Experimental Validation
EnergiesThe improvement of the energy efficiency of hydraulic systems remains an essential challenge for industry, and the demand for more sustainable solutions is increasing.
Lasse Schmidt +1 more
doaj +1 more source
Dual output variable pitch turbofan actuation system [PDF]
, 1976 An improved actuating mechanism was provided for a gas turbine engine incorporating fan blades of the variable pitch variety, the actuator adapted to rotate the individual fan blades within apertures in an associated fan disc. The actuator included means
Broman, C. L., Griswold, R. H., Jr.
core +1 more source
Soft Robotic Snake with Tunable Undulatory Gait for Efficient Underwater Locomotion
Advanced Robotics Research, EarlyView.This study designs an underwater soft snake robot using 3D‐printed soft actuators, controlled by specific signals to generate sinusoidal undulation. Results show a positive correlation between speed and swing amplitude, with optimal performance at 2/3π phase offset, PLA tail, 1.2 voltage growth rate, and 6s undulation period achieving a maximum speed ...
Huichen Ma, Junjie Zhou, Raye Yeow
wiley +1 more source