Results 171 to 180 of about 165,635 (214)
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Nonlinear optimal control of electro-hydraulic actuators
IFAC Journal of Systems and Control, 2021Abstract 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. +3 more
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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 +4 more
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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 +4 more
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Modeling and identification of an Electro-Hydraulic Actuator
2016 12th IEEE International Conference on Control and Automation (ICCA), 2016In this work, a physical non-linear model of an Electro-Hydraulic Actuator has been developed. Each system component (valves, pipes, cylinders) and their interactions have been modeled by means of conservation and constitutive laws. The actuator dynamics, with lumped-parameter element models, have been treated accurately, with special attention given ...
Cologni, Alberto Luigi +2 more
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Velocity control of an electro hydraulic servosystem
2007 IEEE International Conference on Systems, Man and Cybernetics, 2007This study addresses new hybrid approaches for velocity control of an electro hydraulic servosystem (EHSS) in presence of flow nonlinearities and internal friction. In our new approaches, we combined classical method based-on sliding mode control and fuzzy RBF networks. The control by using adaptive networks need plant's Jacobean, but here this problem
M. Aliyari Shoorehdeli +2 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 ...
Manuel A. Avila +2 more
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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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Fuzzy Feedback Control for Electro-Hydraulic Actuators
Intelligent Automation & Soft Computing, 2023لعبت المشغلات الكهروهيدروليكية (EHA) مؤخرًا دورًا مهمًا في التطبيقات الصناعية الحديثة، خاصة في الأنظمة التي تتطلب دقة عالية للغاية. ويمكن تفسير ذلك من خلال قدرة EHA على التحكم بدقة في الموضع والقوة من خلال أجهزة الاستشعار المتقدمة وخوارزميات التحكم المبتكرة.
Tan Nguyen Van +4 more
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Electro-hydraulic Servomechanisms†
Journal of Electronics and Control, 1958Abstract 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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Electro-hydraulic linear actuator
2016 39th International Spring Seminar on Electronics Technology (ISSE), 2016The 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 +3 more
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