Results 191 to 200 of about 15,341 (227)

Agricultural Tractor Electro-Hydraulics

SAE Technical Paper Series, 1979
<div class="htmlview paragraph">Advancements in farming techniques have required improvements be sought in the vehicle hydraulic system control.</div> <div class="htmlview paragraph">The application of a Electro-Hydraulic Servo System has produced these improvements for the J I Case Company on one series of its Agricultural tractors ...
P. Lourigan, K. Patel
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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
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Nonlinear optimal control of electro-hydraulic actuators

IFAC Journal of Systems and Control, 2021
Abstract A nonlinear optimal (H-infinity) control approach is proposed for electro-hydraulic actuators. Control of electrohydraulic actuators is a non-trivial problem because of the nonlinearities and underactuation in their dynamics. The article’s approach relies first on approximate linearization of the state–space model of the electrohydraulic ...
Rigatos, G., Abbaszadeh, M., Siano, P., Cuccurullo, G.   +3 more
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Experimental Verification of An Electro-Hydraulic Actuation System Driven by An Integrated Electro-Hydraulic Unit

International Journal of Fluid Power, 2023
This paper proposes an electro-hydraulic actuator (EHA) system, and a novel-designed electro-hydraulic unit (EHU) consisting of a fixed-displacement hydraulic gear machine and a variable-speed electric machine. The novel EHU design integrates an electric machine and a hydraulic machine in a single housing, targeting optimal compactness, power density ...
Shaoyang Qu, Federico Zappaterra, Andrea Vacca, Zifan Liu, Enrique Busquets   +4 more
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Applications of electro-hydraulics actuators

SoutheastCon 2016, 2016
Electro-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, Ana Djuric, Velibor Karanovic, Branislav Stevanov   +3 more
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Electro-hydraulic Servomechanisms†

Journal of Electronics and Control, 1958
Abstract The additional complications of hydraulic elements have not prevented servomechanism engineers from resorting frequently in recent years to the use of high-pressure hydraulic motors in place of electric motors. The reasons for this trend are examined in relation to the performance demanded in many modern servomechanisms, particularly these in ...
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Improved electro-hydraulic trainer stations

2011 Louisville, Kentucky, August 7 - August 10, 2011, 2011
Parker Hannifin’s IQAN electro-hydraulic control system was installed on four hydraulic trainers to be used for hands-on lab instruction. Each Parker IQAN system includes a MD3 display/controller, XA2 expansion interface module, and ICL joystick. The updated trainers will be used to teach students about mobile Controller Area Network (CAN) systems ...
null Dennis R Buckmaster, null John Michel   +1 more
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Electro-hydraulic actuator trajectory tracking

Proceedings of the 2004 American Control Conference, 2004
This 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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Electro-hydraulic dipole vibrator

The Journal of the Acoustical Society of America, 1993
A downhole seismic shear wave source is used to generate seismic shear waves a downhole environment. At least one double headed piston rod with a third piston on the center of the rod slides laterally in the downhole tool. Each end piston head is connected to a rolling diaphragm that is secured at its edges around the periphery of the piston receiving ...
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