Results 21 to 30 of about 4,207 (222)

Review and Analysis of the Reasons Delaying the Entry into Service of Power-by-Wire Actuators for High-Power Safety-Critical Applications

open access: yesActuators, 2021
This paper deals with safety-critical, high-power actuation in aerospace applications. Using a system-level synthetic view, it identifies, explains and discusses the reasons why electrically supplied, or power-by-wire, solutions have not spread rapidly ...
Jean-Charles Maré
doaj   +1 more source

Designing redundant metering valves for hydraulic actuators under mixability and low cost-constraints [PDF]

open access: yes, 2010
This article deals with the design of redundant metering valves for mechanically signalled hydraulic actuators. The final aim of the work is to manufacture a new low-cost valve in replacement of the existing expensive valve with an additional leakage ...
Malburet, François   +3 more
core   +1 more source

Harmonic Control for Variable-Frequency Aviation Power System Based on Three-Level NPC Converter

open access: yesIEEE Access, 2020
At present, three-phase 115V/360-800Hz variable frequency AC power system is mostly used in the main power system of More-Electric Aircraft. With the increase of EMA (Electro-Mechanical Actuator), EHA (Electro-Hydrostatic Actuator), DC/DC power supply ...
Zhenyang Hao, Xinying Wang, Xin Cao
doaj   +1 more source

Feasibility studies of a converter-free grid-connected offshore hydrostatic wind turbine [PDF]

open access: yes, 2020
Owing to the increasing penetration of renewable power generation, the modern power system faces great challenges in frequency regulations and reduced system inertia.
Lin, Shuyue, Tong, Xin, Zhao, Xiaowei
core   +1 more source

Design of ultraprecision machine tools with application to manufacturing of miniature and micro components [PDF]

open access: yes, 2005
Currently the underlying necessities for predictability, producibility and productivity remain big issues in ultraprecision machining of miniature/microproducts.
Chen   +20 more
core   +1 more source

Comparative Energy Analysis of a Load Sensing System and a Zonal Hydraulics for a 9-Tonne Excavator

open access: yesActuators, 2020
With the rising demand for energy efficiency, displacement-controlled or so-called pump-controlled systems have become an attractive research topic for applications in construction machinery and other off-road vehicles.
Paolo Casoli   +3 more
doaj   +1 more source

Study of two robust controls for an hydraulic actuator [PDF]

open access: yes, 2003
Two robust control design methodologies are analyzed and compared in this article: the H-infinity control system design and the CRONE control system design.
Lanusse, Patrick   +3 more
core   +1 more source

Design and Validation of a MR-compatible Pneumatic Manipulandum [PDF]

open access: yes, 2007
The combination of functional MR imaging and novel robotic tools may provide unique opportunities to probe the neural systems underlying motor control and learning.
Scheidt, Robert A.   +2 more
core   +2 more sources

Monolayer MoS2 strained to 1.3% with a microelectromechanical system [PDF]

open access: yes, 2019
We report on a modified transfer technique for atomically thin materials integrated onto microelectromechanical systems (MEMS) for studying strain physics and creating strain-based devices.
Bishop, David J.   +6 more
core   +1 more source

A Sliding Mode Control Strategy for an ElectroHydrostatic Actuator with Damping Variable Sliding Surface

open access: yesActuators, 2020
Electro-hydrostatic actuator (EHA) has significance in a variety of industrial tasks. For the purpose of elevating the working performance, we put forward a sliding mode control strategy for EHA operation with a damping variable sliding surface. To start
Mingkang Wang   +4 more
doaj   +1 more source

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