Results 161 to 170 of about 343,795 (193)

Review on electro hydrostatic actuator for flight control

International Journal of Fluid Power, 2016
AbstractElectro Hydrostatic Actuator (EHA) is an emerging aerospace technology that aims at replacing centralised hydraulic system by a self-contained and localised direct drive actuator system. EHA has become an important part of modern flight control systems due to the increased efficiency, reduced leakages and lower overall weight compared to ...
Navatha Alle, Somashekhar S. Hiremath, Singaperumal Makaram, Karunanidhi Subramaniam, Apratim Talukdar   +4 more
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An Integrated, Back-Drivable Electro-Hydrostatic Actuator for a Knee Prosthesis

2020 8th IEEE RAS/EMBS International Conference for Biomedical Robotics and Biomechatronics (BioRob), 2020
This paper focuses on the analysis, development and experimental evaluation of an electro-hydrostatic actuator for knee prosthetic devices. In contrast to traditional actuation, the goal is to obtain a highly-integrated and back-drivable actuator with both active and regenerative capabilities.
Tessari F., Galluzzi R., Tonoli A., Amati N., Milandri G., Laffranchi M., De Michieli L.   +6 more
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Research on the energy-regulation electro-hydrostatic actuator

2016 IEEE Chinese Guidance, Navigation and Control Conference (CGNCC), 2016
This paper describes the benefits of the common electro-hydrostatic actuators(EHAs), the substitutes of common hydraulic actuators, and also highlights the motor heating problem. It proposes a energy-regulation EHAs which can not only insulate motor heating status caused by cis-load, but also improve its efficiency.
null Yaoxing Shang, null Shuhan Ke, null Zongxia Jiao   +2 more
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Development of high-power and backdrivable linear electro-hydrostatic actuator

2014 IEEE-RAS International Conference on Humanoid Robots, 2014
Actuator with high power output and durability is a important factor in developing humanoid robots with high mobility. Development of such actuator with force sensitivity is a challenge. We developed linear electro-hydrostatic actuator (EHA) to realize high-power output, high durability, and backdrivability.
Hiroshi Kaminaga, Satoshi Otsuki, Yoshihiko Nakamura   +2 more
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Design of a electro-hydrostatic actuator controller based on disturbance observer

IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017
According to the nonlinearity and uncertainty of the electro-hydraulic actuator (EHA) system, a feed-forward compensation variable structure control (VSC) algorithm based on disturbance observer (DO) is proposed, by setting the DO parameters, feed-forward compensation for the observed disturbance D(k) is performed. The controller switching function and
Yuqing Zhu 0004, Liang Bo, Yuren Li, Zeqing Liu, Jin Yang   +4 more
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Study on nonlinear PID control for electro-hydrostatic actuator

Proceedings of 2014 IEEE Chinese Guidance, Navigation and Control Conference, 2014
The structure and working principle of Electro-hydrostatic Actuator was analyzed in this paper. And a mathematical model based on the transfer function was given. The paper analyzed the influence of the electric motor and hydraulic section on the EHA system performance. A nonlinear block diagram model based on the Simulink was established in this paper.
Jizhong Fan, Dongyao Ling, Zhiyong Tang, Zhongcai Pei   +3 more
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Feedback linearization PID control for electro-hydrostatic actuator

2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce (AIMSEC), 2011
To solve the problem induced by serious nonlinear characteristic of the electro-hydrostatic actuator (EHA), and realize exact control of EHA, the mathematical model of EHA was derived, an exact linearization control law was obtained via nonlinear coordinate transformation and state feedback.
null Qian Zhang, null Bingqiang Li
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A matrix converter based electro-hydrostatic actuator

IEE Seminar Matrix Converters, 2003
This paper describes the design, construction and testing of a matrix converter permanent magnet motor drive for an electro-hydrostatic actuator (EHA) for aircraft use. The converter has been built using a 1200 volt, 35 Amp Eupec Matrix Converter module.
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Multi-discipline simulation of electro-hydrostatic Actuator with Modelica

CSAA/IET International Conference on Aircraft Utility Systems (AUS 2018), 2018
The electro-hydrostatic actuator (EHA) is replacing the traditional hydraulic actuator to become an important part of the aircraft hydraulic system, because of its power by wire, easy maintenance and high reliability. But the application of EHA is limited by its disadvantage of heat dissipation. Therefore, it is necessary to establish the thermodynamic
null Min Gu, null Shuai Wu, null Chunfang Li, null Zongxia Jiao, null Tao Yang   +4 more
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Theoretical and experimental investigations of a magnetostrictive electro-hydrostatic actuator*

Smart Materials and Structures, 2018
Abstract In this study, the time-domain model of a magnetostrictive electro-hydrostatic actuator (MEHA) is built from the viewpoint of energy conversion, which consists of four energy transformation stages: electrical–magnetic, magneto-elastic, elastic-hydraulic and hydraulic-mechanical energy transformation.
Yuchuan Zhu, Xulei Yang, Norman M Wereley   +2 more
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