Results 21 to 30 of about 10,283 (224)

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

A Novel Algorithm for Hydrostatic-Mechanical Mobile Machines with a Dual-Clutch Transmission

open access: yesEnergies, 2022
Mobile machines using a hydrostatic transmission is highly efficient under lower working-speed condition but less capable at higher transport velocities.
Yusheng Xiang   +4 more
doaj   +1 more source

Modeling and control of an electro-hydrostatic actuator [PDF]

open access: yesProceedings of the IEEE 1995 National Aerospace and Electronics Conference. NAECON 1995, 2002
Advanced electro-hydrostatic actuators offer a high degree of maintainability and combat survivability of aircraft flight control systems, because all the components necessary to operate the actuator are collocated with the actuator. The quantitative feedback theory robust control method is used to design a controller for the actuator.
Kang, K.   +3 more
openaire   +1 more source

Extended Sliding Mode Observer-Based Output Feedback Control for Motion Tracking of Electro-Hydrostatic Actuators

open access: yesMathematics, 2023
This paper develops a novel output feedback control scheme for the motion-tracking problem of an electro-hydrostatic actuator (EHA) in the presence of model uncertainties and external disturbances.
Manh Hung Nguyen, Kyoung Kwan Ahn
doaj   +1 more source

Planar digital nanoliter dispensing system based on thermocapillary actuation [PDF]

open access: yes, 2010
We provide guidelines for the design and operation of a planar digital nanodispensing system based on thermocapillary actuation. Thin metallic microheaters embedded within a chemically patterned glass substrate are electronically activated to generate ...
Anton A. Darhuber   +60 more
core   +2 more sources

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

Force Tracking Impedance Control of Hydraulic Series Elastic Actuators Interacting with Unknown Environment

open access: yesMathematics, 2022
Force tracking control for hydraulic series elastic actuators (SEAs) is the demand in robots interacting with the surrounding world. However, the inherent nonlinearities and uncertainties of the hydraulic system, as well as the unknown environment, make ...
Yong Nie   +5 more
doaj   +1 more source

Collapse of Double-Walled Carbon Nanotube Bundles under Hydrostatic Pressure [PDF]

open access: yes, 2006
We use classical molecular dynamics simulations to study the collapse of single (SWNT) and double-walled (DWNT) carbon nanotube bundles under hydrostatic pressure.
Gadagkar, Vikram   +4 more
core   +2 more sources

A dynamics-driven approach to precision machines design for micro-manufacturing and its implementation perspectives [PDF]

open access: yes, 2008
Precision machines are essential elements in fabricating high quality micro products or micro features and directly affect the machining accuracy, repeatability and efficiency.
Chen C. Y.   +5 more
core   +1 more source

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

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