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

Study of the Dynamic Properties of the Miniature Electro-Hydrostatic Actuator

Machines
The electro-hydrostatic actuator (EHA) is a new type of high-performance servo actuator that originated in the field of aerospace, and it is gradually becoming a common basic component for various types of large equipment.
Yiqiang An, Jiazhe Mao, Chengwei Tong, Xiaoyun Zhou, Jian Ruan, Sheng Li   +5 more
doaj   +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

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

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

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

Energies, 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, Morten Kjeld Ebbesen, Michael Rygaard Hansen   +2 more
doaj   +1 more source

Double Redundancy Electro-Hydrostatic Actuator Fault Diagnosis Method Based on Progressive Fault Diagnosis Method

Actuators, 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, Dong-Ao Zhao, Duo Liu, Xu Liu   +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

Applied 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, Jun Wang, Weikang Li, Di Liu, Cun Shi, Fan Zhang   +5 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

RISE-Based Composite Adaptive Control of Electro-Hydrostatic Actuator with Asymptotic Stability

Machines, 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, Xiaowei Yang, Wenxiang Deng, Jianyong Yao   +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]

한국정밀공학회지, 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, Do-Yeon Kang, Ji-Seok Lee   +2 more
doaj   +1 more source