Results 11 to 20 of about 4,945 (206)

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

Machines, 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, Zhenhua Lao, Jiajia Liu, Yichi Huang, Xiangwei Sun, Jianzhong Tang, Zheng Chen   +6 more
doaj   +1 more source

Results of a Feasibility Study of a Prognostic System for Electro-Hydraulic Flight Control Actuators

International Journal of Prognostics and Health Management, 2021
Electro-Hydraulic Servo-Actuators (EHSA) are currently the most used actuation technology for primary flight control systems of civil and military aircrafts. Although some alternatives have emerged in the last decade, such as electromechanical or electro-
Sylvain Autin, Andrea De Martin Giovanni Jacazio, Jérôme Socheleau, George Vachtsevanos   +3 more
doaj   +1 more source

Validation of Aero-Load Estimator for Convair 880 Aircraft Flight Simulator Benchmark with Electro-Hydrostatic Actuators [PDF]

INCAS Bulletin, 2021
Simulating an aircraft model using of high fidelity models of subsystems for its primary and secondary flight control actuators requires measuring or estimating aero-load data acting on flight control surfaces.
Yamina BOUGHARI, Ruxandra Mihaela BOTEZ, Amir BANIAMERIAN, Ehsan SOBHANI TEHRANI, Armineh GARABEDIAN   +4 more
doaj   +1 more source

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

Adv 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, Wei R, Chen Z, Pang H, Li H, Yang Y, Hua Q, Shen G.   +7 more
europepmc   +2 more sources

Qualitative and quantitative analysis of the reliability of NPC and ANPC power converters for aeronautical applications

Alexandria 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, Abderrahmane Talaoubrid, Linda Barazane, Yamine Sellami, Mohamed Tadjine, Nadjet Zioui   +5 more
doaj   +1 more source

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

Adv 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, Liu M, Lei J, Wang Y, Linghu C, Bowen C, Hsia KJ.   +6 more
europepmc   +2 more sources

Refined Modeling Method and Analysis of an Electromagnetic Direct-Drive Hydrostatic Actuation System

Actuators, 2022
The hydrostatic actuation system based on linear actuators improves the complex piston force and long transmission path of the traditional electro-hydrostatic actuator (EHA).
Jiayu Lu, Chaofan Gu, Yanjun Zhao, Cao Tan, Yingtao Lu, Changzhong Fu   +5 more
doaj   +1 more source

A Model - Based Jamming Detection Method for Electro-Hydrostatic Actuators

Hittite Journal of Science and Engineering, 2020
A n anomaly or a fault, which may be treated as insignificant in a complicated engineering system, like an electro–hydraulic flight control actuator, can cause considerable performance degradation and deteriorating effects or even worse it may end up ...
Emre Murat Poyraz, Ali Emre Turgut, Hakan Caliskan   +2 more
doaj   +1 more source

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

Proceedings 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., Pachter, M., Houpis, C. H., Rasmussen, S.   +3 more
openaire   +1 more source

Design, Analysis, and Verification of an Electro- Hydrostatic Actuator for Distributed Actuation System [PDF]

Sensors, 2020
In order to provide a simplified and low-cost solution of the terminal for a distributed actuation system, this paper proposes an electro-hydrostatic actuator (EHA) based on the linear drive principle. The proposed actuator is directly driven by a linear pump with a collaborative rectification mechanism, whose performance relies on the collaboration of
Yang Li 0080, Zongxia Jiao, Zimeng Wang
openaire   +3 more sources