Results 11 to 20 of about 10,781 (143)
Mathematical modelling and virtual decomposition control of heavy-duty parallel$-$serial hydraulic manipulators [PDF]
Mechanism and Machine Theory; Volume 170; 2022; 104680; ISSN
0094-114X, 2021 This paper proposes a novel modelling approach for a heavy-duty manipulator with parallel$-$serial structures connected in series. Each considered parallel$-$serial structure contains a revolute segment with rigid links connected by a passive revolute joint and actuated by a linear hydraulic actuator, thus forming a closed kinematic loop.
arxiv +1 more source
Design and performance analysis of hydraulic switching valve driven by magnetic shape memory alloy
Advances in Mechanical Engineering, 2021 In this paper, the hydraulic switching valve is designed and its dynamic performance is investigated through proposing a fast response actuator with magnetic shape memory alloy (MSMA) to drive the valve. MSMA actuator with spring return is designed and a
Hu Shi +3 more
doaj +1 more source
Flying Hydraulically Amplified Electrostatic Gripper System for Aerial Object Manipulation [PDF]
, 2022 Rapid and versatile object manipulation in air is an open challenge. An energy-efficient and adaptive soft gripper combined with an agile aerial vehicle could revolutionize aerial robotic manipulation in areas such as warehousing. This paper presents a bio-inspired gripper powered by hydraulically amplified electrostatic actuators mounted to a ...
arxiv +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 +2 more
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Development and Control of an Electro-Hydraulic Actuator System for an Exoskeleton Robot
Applied Sciences, 2019 Exoskeleton robots have been developed in various fields and are divided into electric and hydraulic exoskeletons according to the actuator type. In the case of hydraulic robots, because a unidirectional pump is applied, there are limitations to the ...
Dongyoung Lee +3 more
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Sensors, 2021 In this article, we propose a recent iterative learning algorithm for sensor data fusion to detect pitch actuator failures in wind turbines. The development of this proposed approach is based on iterative learning control and Lyapunov’s theories ...
Leonardo Acho, Gisela Pujol-Vázquez
doaj +1 more source
Actuators, 2018 This paper presents all the significant nonlinearities that exist in the description of an electro hydraulic actuator for flexible nozzle thrust vector control. Starting from practical possibilities of the theory of a nonlinear system (which are based on
Dragan Nauparac +2 more
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Sensors, 2020 In this paper, an integrated control strategy of position synchronization control for dual-electro-hydraulic actuators with unknown dead-zones is proposed. The unified control scheme consists of two parts: One is adaptive dead-zone inverse controllers of
Lixin Wang +4 more
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Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2023 Magnetostrictive electro-hydraulic actuator (M-EHA) is a highly integrated hydraulic servo device with very complex movement and conduction processes. The output performance could be affected by many factors.
Menglun TAO +4 more
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System Identification and Controller Design for Hydraulic Actuator [PDF]
arXiv, 2021 System Identification of Hydraulic Actuators is critical for analyzing their performance and designing a suitable Control System. Hydraulic actuators are extensively used in many applications, ranging from flight simulators, robotics, orthopaedic surgery, material testing, construction and many other industrial types of machinery.
arxiv