Results 101 to 110 of about 48,297 (229)

A Self-Contained Electro-Hydraulic Cylinder with Passive Load-Holding Capability

open access: yesEnergies, 2019
Self-contained electro-hydraulic cylinders have the potential to replace both conventional hydraulic systems and the electro-mechanical counterparts enhancing energy efficiency, plug-and-play installation, and reduced maintenance.
Damiano Padovani   +3 more
doaj   +1 more source

Space Transportation System solid rocket booster thrust vector control system [PDF]

open access: yes
The Solid Rocket Booster, Thrust Vector Control (TVC) system was designed in accordance with the following requirements: self-contained power supply, failsafe operation, 20 flight uses after exposure to seawater landings, optimized cost, and component ...
Mccool, A. A.   +2 more
core   +1 more source

The Eccentuator: A new concept in actuation [PDF]

open access: yes, 1980
A new concept in actuation for aerospace mechanisms is presented. This actuator, called an 'eccentuator', features unique output characteristics, installation and envelope efficiencies, and relative simplicity.
Musgrove, R. G.
core   +1 more source

Highly Dynamic Soft Electrohydraulic Origami Actuators for Agile and Multimodal Robotic Locomotion

open access: yesSmartBot, EarlyView.
Most current soft robots still lag far behind their natural counterparts in both agility and speed, mainly attributed to the limited morphing modes and performance of soft actuators. Here, the authors report a new methodology of electrohydraulic origami (EHO) for creating powerful and multimodal soft actuators with large strain, high speed, lightweight,
Wenbo Li   +6 more
wiley   +1 more source

Beyond feasibility filters: How expertise heterogeneity enables innovation recognition

open access: yesStrategic Management Journal, EarlyView.
Abstract Research Summary Organizations often struggle to identify promising innovations that balance novelty and feasibility in multidisciplinary domains, yet how does evaluator expertise heterogeneity shape these assessments? This study examines how evaluator expertise influences innovation evaluation through a field experiment with National ...
Jacqueline N. Lane   +3 more
wiley   +1 more source

Position Control System of Hydraulic CylinderBased on Microcontroller

open access: yesJournal of Engineering and Sustainable Development, 2008
Recently, the industrial applications using an electro-hydraulic system have been widely used. Since these are necessary and more ambitious specifications with respect to positioning accuracy, rapid motion and for generating large forces.
Munaf F. Bader
doaj  

Extended state observer–based fractional order proportional–integral–derivative controller for a novel electro-hydraulic servo system with iso-actuation balancing and positioning

open access: yesAdvances in Mechanical Engineering, 2015
Aiming at balancing and positioning of a new electro-hydraulic servo system with iso-actuation configuration, an extended state observer–based fractional order proportional–integral–derivative controller is proposed in this study. To meet the lightweight
Qiang Gao   +4 more
doaj   +1 more source

Independent Orbiter Assessment (IOA): Analysis of the rudder/speed brake subsystem [PDF]

open access: yes
The results of the Independent Orbiter Assessment (IOA) of the Failure Modes and Effects Analysis (FMEA) and Critical Items List (CIL) are presented. The IOA approach features a top-down analysis of the hardware to determine failure modes, criticality ...
Riccio, J. R., Wilson, R. E.
core   +1 more source

Evaluation of prestress losses in concrete beams using destructive and non‐destructive methods

open access: yesStructural Concrete, EarlyView.
Abstract Over the past few decades, prestressing techniques have become essential in the construction of key structures, infrastructure, and bridges. The serviceability and safety of prestressed concrete (PC) elements are closely tied to the effectiveness of the prestressing process.
A. N. Consiglio, G. Muciaccia, G. Rosati
wiley   +1 more source

Bayesian approach to classification of football match outcome [PDF]

open access: yes, 2018
The football match outcome prediction particularly has gained popularity in recent years. It attract lots type of fan from the analyst expert, managerial of football team and others to predict the football match result before the match start.There are ...
Abdul Rahman, Muhammad Haleq Azhar   +3 more
core   +2 more sources

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