Results 11 to 20 of about 4,207 (222)

Disturbance Observer-Based Sliding Mode Controller for Underwater Electro-Hydrostatic Actuator Affected by Seawater Pressure

open access: yesMachines, 2022
This paper presents a disturbance-observer-based sliding mode control strategy for an underwater electro-hydrostatic actuator, particularly considering that electro-hydrostatic actuators (EHAs) significantly suffer from sea pressure disturbance, which ...
Yong Nie   +6 more
doaj   +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

Bioinspired Intelligent Soft Robotics: From Multidisciplinary Integration to Next-Generation Intelligence. [PDF]

open access: yesAdv Sci (Weinh)
Soft robotics, featuring intrinsic compliance and biomimetic adaptability, emerges as transformative in next‐generation intelligent systems. This review outlines how advancements in four foundational domains—actuation, materials, manufacturing, and control—drive the evolution of bioinspired intelligent soft robotics, poised to redefine the boundaries ...
Wang X   +7 more
europepmc   +2 more sources

Novel Concept for Electro-Hydrostatic Actuators for Motion Control of Hydraulic Manipulators

open access: yesEnergies, 2021
Self-contained hydraulic cylinders have gained popularity in the recent years but have not been implemented for high power articulated hydraulic manipulators.
Konrad Johan Jensen   +2 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

Fault Mode Analysis and Convex Optimization-Based Fault-Tolerant Control for New Type Dissimilar Redundant Actuation System of Near Space Vehicle

open access: yesApplied Sciences, 2023
A new type dissimilar redundant actuation system (NT-DRAS), which is composed of an electro-hydrostatic actuator (EHA) and an electro-mechanical actuator (EMA), is applied in high value unmanned aerial vehicles such as the future near space vehicles to ...
Jian Huang   +5 more
doaj   +1 more source

Bioinspired Mechanisms and Actuation of Soft Robotic Crawlers. [PDF]

open access: yesAdv Sci (Weinh)
Researchers have been developing soft materials and robotic crawlers inspired by soft‐bodied animals to mimic effective crawling in complex environments. This review explores the state‐of‐the‐art in soft crawlers, highlighting the interaction between materials, crawling mechanisms, actuation, and applications. The review concludes by providing insights
Pan M   +6 more
europepmc   +2 more sources

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

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

Development of Lower-Limb Wearable Robot with Single Acting Hydraulic Telescopic Cylinder Electro Hydrostatic Actuator (SAT-EHA) for Handling of Heavy Loads [PDF]

open access: yes한국정밀공학회지, 2020
For years, crane, a chain block, an elevator and a forklift truck have been developed and used to carry heavy loads, but manpower needed where heavy equipment use is not practical.
Dong-Hyun Jeong   +2 more
doaj   +1 more source

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