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Compliant Biped Locomotion of Hydra, an Electro-Hydrostatically Driven Humanoid
2018 IEEE-RAS 18th International Conference on Humanoid Robots (Humanoids), 2018The backdrivability of joints is a critical requirement for the robots that perform tasks in uncertain environments. While series elastic actuators are intrinsically backdrivable, their control bandwidth is limited by the low resonant frequency of the elastic component.
Tianyi Ko +3 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, 2017According 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 +4 more
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Analysis for the power loss of electro hydrostatic actuator and hydraulic actuator
2015 IEEE International Conference on Advanced Intelligent Mechatronics (AIM), 2015This article describes the difference between traditional airborne hydraulic actuator and electro hydrostatic actuator in heat dissipation. The power loss of the two systems are analyzed based on the method of energy transfer under different working conditions.
Wunong Hu +6 more
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Reliability of Different Loads on Electro Hydrostatic Actuator
2019Electro Hydrostatic Actuators (EHA) is emerging as a viable option for industrial machine builders. The design combines the technologies of both electro-mechanical and electro-hydraulic systems. The major applications are in aerospace, robotics and automation industry etc. EHA system is an emerging technology.
Aravindkumar D. Kotagond +2 more
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Hydraulic circuit analysis for the electro-hydrostatic actuator system
2016 16th International Conference on Control, Automation and Systems (ICCAS), 2016An Electro-Hydrostatic Actuator(EHA) is a kind of a closed loop system using bi-directional hydraulic pump and cylinder assembly, and is used to control the position of the aircraft and the missile. The EHA is also applied to the leisure field such as roof control of an automobile, wing body and power gate control of a special vehicle and tilting ...
So-Nam Yun +3 more
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Design and Testing of a Linear-Driven Electro-Hydrostatic Actuator
Journal of Dynamic Systems, Measurement, and Control, 2019Abstract This paper presents a novel hydrostatic actuator, which is named as linear-driven electro-hydrostatic actuator (LEHA). In an LEHA, the actuator is driven by a novel collaborative rectification pump (CRP), which incorporates two miniature cylinders and two spool valves.
Zimeng Wang, Zongxia Jiao, Xinglu Li
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Analysis of the Thermal Characteristics of Electro-Hydrostatic Actuators*
2023 9th International Conference on Fluid Power and Mechatronics (FPM), 2023Xiaoxia Han +5 more
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Design and Characterization of a Dual Electro-Hydrostatic Actuator
2011Actuation of flight surfaces in aircraft have evolved over the last century from systems using simple mechanical linkages actuated by the pilot to complex electronic systems that maneuver large loads and have some form of redundancy. The latest form of flight surface actuation uses Power-By-Wire (PBW) systems, which are modulated, lean and fault ...
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Research on an axial-mounted dual magnetostrictive material rods-based electro-hydrostatic actuator
Journal of Intelligent Material Systems and Structures, 2022Zhu Yuchuan, Yunze Song, Long Chen
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