Results 301 to 310 of about 42,845 (360)
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Cavitation in Valve-Controlled Hydraulic Actuators
Journal of Applied Mechanics, 1963Results of analytical and experimental studies of cavitation in valve-controlled hydraulic actuators under various dynamic conditions are presented. The analytical work consists of deriving approximate critical cavitation conditions for various operating modes.
Wang, P. K. C., Ma, J. T. S.
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IEEE Transactions on Industrial Electronics, 2017
In this study, bilateral control between electric and hydraulic actuators is investigated. Bilateral control realizes telemanipulation of remote robots with the sense of touch. We focus on the system of local (master) robots, manipulated by operators that are driven by electric actuators, and slave robots, which work in remote places that are driven by
Sho Sakaino +2 more
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In this study, bilateral control between electric and hydraulic actuators is investigated. Bilateral control realizes telemanipulation of remote robots with the sense of touch. We focus on the system of local (master) robots, manipulated by operators that are driven by electric actuators, and slave robots, which work in remote places that are driven by
Sho Sakaino +2 more
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Intelligent Diagnostic System for Hydraulic Actuator
2019 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM), 2019© 2019 IEEE. The proposed technical solution allows optimizing the process of hydraulic drive control, which leads to increased energy efficiency, as well as diagnosing the state of the hydraulic system of the industrial machine. To ensure the speed of the process of diagnosing the state of the hydraulic drive in addition to the hardware of the system,
Khaziev E., Khaziev M.
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Power hydraulics - switched mode control of hydraulic actuation
2010 IEEE/RSJ International Conference on Intelligent Robots and Systems, 2010This paper is concerned with the application of switching technology to hydraulic actuation. Over the last 50 years with advances in power electronics, faster and faster static switches have been developed and applied to the control of motors. Hydraulic technology evolved in the opposite direction: switching control was not considered, and more and ...
Emanuele Guglielmino +4 more
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Pneumatic and hydraulic actuators
1983When fluid energy is transformed into mechanical energy there are two operating mechanisms, static and dynamic, to be considered.
François Lhôte +3 more
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Robust microvalves for hydraulic actuators
SPIE Proceedings, 2003Robust compact hydraulic actuators are extremely needed in space industry where payload is critical. Microvalves are key component for compact hydraulic actuators. Robust microvalves with large load bearing ability, large flow rate, and high operational frequency are objectives of this research.
Quanfang Chen +3 more
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Hydraulic actuator with overpressure compensation
2020L'invention concerne un actionneur hydraulique comprenant une pompe (12) volumétrique à débit variable, un organe (20) permettant de faire varier en continu le débit de la pompe (12), l'organe (20) étant actionné par un vérin (40) alimenté par un premier distributeur (48) commandé en fonction d'un ordre de déplacement de l'actionneur (10).
Alfayad, Samer +2 more
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Electro-Hydrodynamic Pumped Hydraulic Actuation
Vibration and Noise Control, 1998Abstract A new type of actuation device has been conceptualized that meets the needs of both large displacement, force and bandwidth within a package more compact than currently available magnetostrictive and stack-type piezo actuators of similar rating. This concept relies on micro-scale electrohydrodynamic (EHD) pumping of a dielectric
S. Kang, K. P. Hallinan, R. Kashani
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Applications of electro-hydraulics actuators
SoutheastCon 2016, 2016Electro-hydraulic systems can be used in robust robotics systems that have to carry heavier loads efficiently. Electrical drives have proven to be reliable and easy to control, but they may have problems when it comes to holding a position under load for a long period of time.
Vukica Jovanovic +3 more
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Electro-hydraulic actuator trajectory tracking
Proceedings of the 2004 American Control Conference, 2004This paper combines block control, sliding mode control and integral control techniques to design a controller, which is able to force an electrohydraulic actuator driven by a servovalve to track a given chaotic reference trajectory. This approach enables to compensate the inherent nonlinearities of the actuator and to reject external constant ...
M.A. Avila, A.G. Loukianov, E.N. Sanchez
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