Results 21 to 30 of about 2,221 (181)
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 +2 more
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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 +2 more
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Variable displacement electro-hydrostatic actuator [PDF]
Proceedings of the IEEE 1991 National Aerospace and Electronics Conference NAECON 1991, 2002 The author discusses the effects of pump displacement on electro-hydrostatic actuator (EHA) performance characteristics and the possible advantages of using a variable displacement pump in an EHA. Issues discussed are heating, size, and stiffness.
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Journal of Harbin University of Science and Technology, 2020 As a typical bionic foot walking robot, hydraulic quadruped robot has attracted much attention due to its high mobility, strong load capacity and smooth motion The electrohydraulic servo cylinder, as its power actuating element, requires low friction ...
SHAO Jun peng, LI Jing bo, SUN Gui tao
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Dynamic Analysis of Electro Hydrostatic Actuation System
Procedia Technology, 2016 AbstractMore electric aircraft initiative has led to Fly-By-Wire (FBW) and Power-By-Wire (PBW) technologies. PBW technology has several advantages and has potential for weight reduction and energy saving compared to conventional hydraulic system. Recent development in aviation technology have combined the electric and hydraulic system and arrived at ...
Navatha, A. +3 more
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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.
K. Kang +3 more
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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 +3 more
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Detection of overload generated faults in electro-hydrostatic actuators [PDF]
2011 19th Mediterranean Conference on Control & Automation (MED), 2011 This paper proposes a method for detecting faults generated by increased loads in a class of mechanical control systems. It is considered that the load (input disturbance) is unmeasurable, only its bounds corresponding to normal operation are known. To solve the fault detection problem, a detector was proposed for a class of linear control systems that
Márton, Lörinc, Varga, Andreas
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Shock and Vibration, 2022 The test bench was designed to solve the problem of measuring the oil film thickness of the liquid hydrostatic guideway of machine tools. And based on the fast overshoot of the classical PID control, introducing the self-antidisturbance control algorithm,
Xu Fang, Youmin Wang, Bo Zhu
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Actuators, 2022 Electro-hydrostatic actuators (EHAs) are expanding their application fields due to their combined advantages of electric and hydraulic actuation.
Tuanhui Guo +3 more
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