Results 31 to 40 of about 40,201 (253)
Actuators, 2018 Valve-controlled hydraulic actuation systems are favored in many applications due to their fast response, high power-to-weight ratio, and stability under variable working conditions. Efficiency, however, is the main disadvantage of these systems.
Ahmed Imam +3 more
doaj +1 more source
IEEE Access, 2023 In the existing electric excavators, the energy efficiency of the hydraulic system is less than 30% due to a large amount of throttling loss and waste of potential energy.
Yunxiao Hao +5 more
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Enhancement of synthetic jets by means of an integrated valve-less pump Part II. Numerical and experimental studies [PDF]
, 2005 The paper studies the performance of the new fluid jet actuator based on the novel principle of the generation of fluid jet, which has been presented in [Z. Travnicek, A.I. Fedorchenko, A.-B.
Tesar, V., Travniceka, Z., Wang, A.
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Applied Sciences, 2022 Insect behaviors, such as flying, oviposition, parasitism, mating/calling, response to semiochemicals, and others, might be influenced by barometric pressure fluctuations.
Camila M. Costa +3 more
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A Novel Algorithm Based on LoRa Technology for Open-Field and Protected Agriculture Smart Irrigation System [PDF]
, 2020 A novel algorithm for smart irrigation system adaptable for both open-field and protected agriculture based on LoRa technology is proposed in this paper.
Al Bazi, Ammar +2 more
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The effectiveness of the implementation and automation of heat pump on public buildings
MATEC Web of Conferences, 2016 This article is devoted to consideration of effectiveness of the implementation and automation of heat pump on public buildings, in particular, at public catering.
Trusov Artur, Shilkina Svetlana
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Scientific Reports, 2023 Photoinduced carrier dynamics of nanostructures play a crucial role in developing novel functionalities in advanced materials. Optical pump-probe scanning tunneling microscopy (OPP-STM) represents distinctive capabilities of real-space imaging of such ...
Katsuya Iwaya +7 more
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Energies, 2020 The heating, ventilation and air conditioning (HVAC) system negatively affects the electric vehicle (EV) driving range, especially under cold ambient conditions.
Ivan Cvok, Igor Ratković, Joško Deur
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A Complete Analysis for Pump Controlled Single Rod Actuators
, 2016 In the current study a variable speed pump controlled hydrostatic circuit where an underlapped shuttle valve is utilized to compensate the unequal flow rate of a single rod actuator is analyzed. Parameters of the shuttle valve are included in the system analysis, rather than treating it as an ideal switching element as handled in literature.
Çalışkan, Hakan +2 more
openaire +2 more sources
Charge pump controller for grounded piezoelectric actuators used in precise positioning
Electronics Letters, 2011 A charge pump controller adapted for grounded piezoelectric loads is proposed. By transferring charge packets into the piezoelectric actuator step by step, the actuator deforms with much less hysteresis and ultra-high resolution. Compared with voltage drive, the actuator hysteresis is reduced by 71-83- over a frequency range of 0.01-0.1-Hz.
Y.T. Ma, Z.H. Feng, L. Huang, L.S. Zhang
openaire +1 more source