Results 21 to 30 of about 3,264 (232)

Energy and Operation Characteristics of Electric Excavator With Innovative Hydraulic-Electric Dual Power Drive Boom System

open access: yesIEEE 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
doaj   +1 more source

Analysis of Frequency Adjustable Control of Permanent Magnet Synchronous Motor for Pump-controlled Actuators

open access: yesInternational Journal of Fluid Power, 2023
Recently the pump-controlled system has actively been proposed as a replacement for conventional valve-controlled systems, to improve the energy efficiency in non-road mobile machinery. Earlier research demonstrated that a pump-controlled hydraulic system combines the best properties of traditional hydraulics and electric intelligence.
Minav Tatiana, Zakharov Viacheslav
openaire   +1 more source

Analysis of Field Oriented Control of Permanent Magnet Synchronous Motor for a Valveless Pump-Controlled Actuator [PDF]

open access: yesThe 1st International Electronic Conference on Actuator Technology: Materials, Devices and Applications, 2020
Earlier research demonstrated that a pump-controlled hydraulic system combines the best properties of traditional hydraulics and electric intelligence. Thus, the new system has been proposed as a replacement for conventional valve-controlled systems, to improve the energy efficiency in non-road mobile machinery in particularly.
Viacheslav Zakharov, Tatiana Minav
openaire   +2 more sources

A Pump-Controlled Circuit for Single-Rod Cylinders that Incorporates Limited Throttling Compensating Valves

open access: yesActuators, 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

Automated Barometric Chamber for Entomology Experiments: Arthropods’ Behavior and Insect-Plant Interactions

open access: yesApplied 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
doaj   +1 more source

The effectiveness of the implementation and automation of heat pump on public buildings

open access: yesMATEC 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
doaj   +1 more source

A Novel Solution for the Elimination of Mode Switching in Pump-Controlled Single-Rod Cylinders

open access: yesActuators, 2020
This paper concerns the stability issue of pump-controlled single-rod cylinders, known as mode switching. First, a review of the topic is provided. Thereafter, the most recently proposed solution for the elimination of mode switching is investigated and ...
Petter H. Gøytil   +2 more
doaj   +1 more source

Externally-triggerable optical pump-probe scanning tunneling microscopy with a time resoloution of tens-picosecond

open access: yesScientific 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
doaj   +1 more source

A Complete Analysis for Pump Controlled Single Rod Actuators

open access: yes, 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

Optimisation of Control Input Allocation Maps for Electric Vehicle Heat Pump-based Cabin Heating Systems

open access: yesEnergies, 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
doaj   +1 more source

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