Results 21 to 30 of about 3,270 (221)

Study of the Energy Conversion Process in the Electro-Hydrostatic Drive of a Vehicle

open access: yesEnergies, 2018
In the paper, we describe a study of an electro-hydrostatic hybrid drive of a utility van intended for city traffic. In this hybrid drive, the electric drive is periodically accompanied by hydrostatic drive, especially during acceleration and ...
Wiesław Grzesikiewicz   +3 more
doaj   +1 more source

Double Redundancy Electro-Hydrostatic Actuator Fault Diagnosis Method Based on Progressive Fault Diagnosis Method

open access: yesActuators, 2022
The electro-hydrostatic actuator (EHA) is the key component of most electric aircraft, and research on its fault diagnosis technology is of great significance to improve the safety and reliability of aircraft flight.
Hai-Tao Qi   +3 more
doaj   +1 more source

Set-based approach to passenger aircraft family design [PDF]

open access: yes, 2016
Presented is a method for the design of passenger aircraft families. Existing point-based methods found in the literature employ sequential approaches in which a single design solution is selected early and is then iteratively modified until all ...
Guenov, Marin D.   +2 more
core   +2 more sources

Digital Hydraulic Actuators: An Alternative for Aircraft Control Surfaces [PDF]

open access: yes, 2023
In the last decades, digital hydraulics has emerged as a new alternative for the development of more efficient hydraulic systems, where the effects of throttling losses and internal leakages are minimized through the use of conventional hydraulic ...
De Negri, Victor Juliano   +3 more
core   +2 more sources

Qualitative and quantitative analysis of the reliability of NPC and ANPC power converters for aeronautical applications

open access: yesAlexandria Engineering Journal, 2022
In more electrical aircraft, most flight control wing surface actuators are either electro-hydrostatic or electro-mechanical, whether in manual or autopilot mode.
Reda Dermouche   +5 more
doaj   +1 more source

Testing stand for life tests of hydrostatic pumps with a polluted fluid

open access: yesResearch in Agricultural Engineering, 2003
Testing of the lifetime of hydrostatic transmissions can be done on special testing stands. Some testing stands use a pressure valve connected at the outlet of a pump. When using this design of stands, it is important to keep clear the operating fluid by
I. Petranský, M. Bolla
doaj   +1 more source

Active control of electro-visco-fingering in Hele-Shaw cells using Maxwell stress

open access: yesiScience, 2022
Summary: Viscous fingering is an extensively observed phenomenon in porous media or Hele-Shaw cells. In general, this instability is particularly difficult to control for given fluids and geometries.
Peiliu Li, Xianfu Huang, Ya-Pu Zhao
doaj   +1 more source

RISE-Based Composite Adaptive Control of Electro-Hydrostatic Actuator with Asymptotic Stability

open access: yesMachines, 2021
The electro-hydrostatic actuator (EHA), the actuator of electric drive and hydraulic transmission, is competitive since it is small in size, light in weight and high in power density.
Yaowen Ge   +3 more
doaj   +1 more source

Nonlinear force tracking control of electrohydrostatic actuators submitted to motion disturbances [PDF]

open access: yes, 2020
In some industrial fields, such as aerospace, electro-hydrostatic actuators (EHAs) are increasingly used to replace conventional standard hydraulic actuators due to their better energy performance.
Bideaux, Eric   +4 more
core   +7 more sources

A Model - Based Jamming Detection Method for Electro-Hydrostatic Actuators

open access: yesHittite Journal of Science and Engineering, 2020
A n anomaly or a fault, which may be treated as insignificant in a complicated engineering system, like an electro–hydraulic flight control actuator, can cause considerable performance degradation and deteriorating effects or even worse it may end up ...
Emre Murat Poyraz   +2 more
doaj   +1 more source

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