Results 261 to 270 of about 3,832 (301)

Design of a Hydraulic Actuator Test Stand for Non-Linear Analysis of Hydraulic Actuator Systems

Automation Technology for Off-Road Equipment Proceedings of the 2002 Conference, 2013
Stability is imperative in the design of hydraulic systems. Servo-hydraulic systems are inherently non-linear creating various nuances when analyzing the stability of the system. Friction, port flow, saturation, impact loading, line dynamics, and boundary conditions are a few of the many non-linearities found in servo-hydraulic systems which are to ...
null Jill E. Krutz, null David F. Thompson, null Gary W. Krutz, null Randall J. Allemang   +3 more
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Control of a hydraulically-actuated quadruped robot leg

2010 IEEE International Conference on Robotics and Automation, 2010
This paper is focussed on the modelling and control of a hydraulically-driven biologically-inspired robotic leg. The study is part of a larger project aiming at the development of an autonomous quadruped robot (hyQ) for outdoor operations. The leg has two hydraulically-actuated degrees of freedom (DOF), the hip and knee joints.
Michele Focchi, Emanuele Guglielmino, Claudio Semini, Thiago Boaventura Cunha, Yousheng Yang, Darwin G. Caldwell   +5 more
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Robust microvalves for hydraulic actuators

SPIE Proceedings, 2003
Robust 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, Bo Li, Jianwei Gong, Min Hu   +3 more
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Electrically Actuated Hydraulic Solids

Advanced Engineering Materials, 2016
The authors introduce a new class of electrically‐actuated soft materials. Electro‐active hydraulic solids (EAHSs) are comprised of numerous microscale phase change capsules embedded inside a conductive elastomer matrix which replicate traditional wax actuators in a massively parallel fashion.
Jeffrey Ian Lipton, Sarah Angle, Rona Elinor Banai, Eliad Peretz, Hod Lipson   +4 more
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Hydraulic actuator with overpressure compensation

2020
L'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, Kardofaki, Mohamad, Sleiman, Maya   +2 more
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Novel Linear Hydraulic Actuator

ASME/BATH 2015 Symposium on Fluid Power and Motion Control, 2015
In the area of linear motion, infinite stroke only is provided by electric actuators today, until now there has been no hydraulic alternative. The novel linear hydraulic actuator consists of two double acting cylinders with a common piston rod. The working principle of this actuator for short movements is that at least one piston is connected to the ...
Magnus Landberg, Martin Hochwallner, Petter Krus   +2 more
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Hydraulically actuated artificial muscles

SPIE Proceedings, 2012
Hydraulic Artificial Muscles (HAMs) consisting of a polymer tube constrained by a nylon mesh are presented in this paper. Despite the actuation mechanism being similar to its popular counterpart, which are pneumatically actuated (PAM), HAMs have not been studied in depth.
M. A. Meller, R. Tiwari, K. B. Wajcs, C. Moses, I. Reveles, E. Garcia   +5 more
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A hydraulically-actuated vibrating table.

In engineering testing, a requirement frequently arises for subjecting components or assemblies to vibrations, in order to observe whether they possess undesirable resonances in their component parts, or whether they are sufficiently robust to operate under environmental conditions of severe vibration.
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Alternatives to chrome for hydraulic actuators

Sealing Technology, 2007
The replacement of hard chrome as a wear and corrosion resistant coating is receiving considerable attention in certain application areas. One of the primary applications of interest to the sealing community is the coating of hydraulic cylinder piston rods.
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Electro-hydraulic linear actuator

2016 39th International Spring Seminar on Electronics Technology (ISSE), 2016
The paper presents an electro-hydraulic linear actuator used at Tuzla Sea Survival School on the Cabin Emergency and Escape Trainer CEET B732 developed by author, which implements their research about electro-hydraulic system driven by common PLCs.
Marian Blejan, Ioana Ilie, Radu Radoi, Corneliu Cristescu   +3 more
openaire   +1 more source