Results 71 to 80 of about 2,221 (181)

Hydrodynamic Removal of Sediments in Open Irrigation Channel

Modern Agriculture, Volume 3, Issue 2, December 2025.
The experimental study investigated the hydraulic behaviour of particle transport in an irrigation channel equipped with submerged longitudinal structures designed to reduce the effective cross‐sectional area. The findings demonstrate that the placement of parallel barriers along the flow axis generates localized acceleration and turbulence, which ...
Israel E. Herrera‐Díaz, Rosario Martínez‐Yáñez, Edith A. Gamiño‐Ramírez, César Gutiérrez‐Vaca   +3 more
wiley   +1 more source

Nonlinear Position Control with Nonlinear Coordinate Transformation Using Only Position Measurement for Single-Rod Electro-Hydrostatic Actuator

Mathematics, 2020
In existing methods, full-state feedback is required for the position tracking of single-rod Electro Hydrostatic Actuators (EHAs). Measuring a full state is not always possible because of cost and space limitations.
Wonhee Kim, Daehee Won
doaj   +1 more source

System Reliability Assessment Based on Energy Dissipation: Modeling and Application in Electro-Hydrostatic Actuation System

Energies, 2019
This paper addresses a new reliability model, based on energy dissipation, considering performance degradation behaviors. Different from the two-state reliability model and traditional reliability model based on failure rate statistics, this paper ...
Xiaoyu Cui, Shaoping Wang, Tongyang Li, Jian Shi   +3 more
doaj   +1 more source

Robust Position Control of Electro-Hydrostatic Actuator Systems with Radial Basis Function Neural Networks

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2013
This paper presents the robust tracking control of EHA (Electro Hydrostatic Actuator) system. EHA system provides the simple structure and frees from the environment pollution, but the poor tracking performance is caused by the internal leakage, surging ...
Jeongju CHOI
doaj   +1 more source

Testing device with opened hydrostatic circuit for dynamic loading of the tractor engine by power take off shaft

Research in Agricultural Engineering, 2005
The developed loading device with opened hydrostatic circuit for measurement of speed and dynamic characteristics of the tractor engine by power take off is presented. This loading device may also be used as a portable type for field measurement.
Š. Drabant, M. Bolla, A. Žikla, I. Petranský, J. Ďuďák   +4 more
doaj   +1 more source

Solution of the dark matter riddle within standard model physics: from black holes, galaxies and clusters to cosmology

Frontiers in Astronomy and Space Sciences
It is postulated that the energy density of the (quantum) vacuum acts firstly as dark energy and secondly as a part of dark matter. Assisted by electric fields arising from a small charge mismatch in the cosmic plasma, it can condense on mass ...
Theodorus Maria Nieuwenhuizen
doaj   +1 more source

Electro-Hydrostatic Drive Concept for the Ring Rolling Process

, 2018
Published by [Mainz ...
Siemer, Ekhard, Boes, Christoph, Bolik, Ralf   +2 more
openaire   +2 more sources

One Innovative Method for Improving the Power Density and Efficiency of Electro-Hydrostatic Actuators

Actuators
Although electro-hydrostatic actuators (EHAs) hold broad application prospects in more-electric aircraft and high-end equipment, they face a difficult trade-off between dynamic response and energy efficiency.
Zhenfei Ling, Fengqi Zhou, Hao Liu, Bo Yang, Xiaoping Ouyang   +4 more
doaj   +1 more source

A Systematic Literature Review on PHM Strategies for (Hydraulic) Primary Flight Control Actuation Systems

Actuators
Prognostic and Health Management (PHM) strategies are gaining increasingly more traction in almost every field of engineering, offering stakeholders advanced capabilities in system monitoring, anomaly detection, and predictive maintenance. Primary flight
Leonardo Baldo, Andrea De Martin, Giovanni Jacazio, Massimo Sorli   +3 more
doaj   +1 more source

Fault Detection in an Electro-Hydrostatic Actuator Using Polyscale Complexity Measures and Bayesian Classification

IEEE Open Journal of Instrumentation and Measurement
This article presents a novel approach for fault detection in a hydraulic actuation system. The fault of interest is the internal leakage of the actuator, which may often be caused by the wearing down of the piston seal.
Soleiman Hosseinpour, Witold Kinsner, Saman Muthukumarana, Nariman Sepehri   +3 more
doaj   +1 more source