Results 21 to 30 of about 10,781 (143)
Hydraulically Amplified Self-Healing ELectrostatic (HASEL) Inspired Actuators [PDF]
arXiv, 2021 This report presents research conducted on amplified self-healing electrostatic (HASEL) actuators. HASEL actuators are comprised of a dielectric fluid sealed between two inextensible layers with bonded, flexible electrodes on its outer surface. When charge is applied to the electrodes, Coulomb force compresses the fluid and causes the actuator to ...
arxiv
IEEE Access, 2018 This paper gives the kinematic description and mathematical dynamic model of a three-degrees-of-freedom manipulator, including hydraulic actuator dynamics, and then proposes a disturbance observer-based robust control scheme for the position and torque ...
To Xuan Dinh +3 more
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Design and Control of a Linear Rotary Electro-Hydraulic Servo Drive Unit
Applied Sciences, 2023 In this paper, a new solution for an electro-hydraulic servo drive is proposed, which consists of two electro-hydraulic servo drives: one with a hydraulic cylinder and one with a hydraulic rotary motor.
Andrzej Milecki +2 more
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Nonsmooth Quasistatic Modeling of Hydraulic Actuators [PDF]
arXiv, 2021 This article presents a quasistatic model of a hydraulic actuator driven by a four-valve independent metering circuit. The presented model describes the quasistatic balance between the velocity and force and that between the flowrate and the pressure. In such balanced states, the pressure difference across each valve determines the oil flowrate through
arxiv
Bond Graph Modeling and Simulation of Hybrid Piezo-Flexural-Hydraulic Actuator
Engineering ProceedingsIn this study, a hybrid piezo-flexural-hydraulic actuator is modeled and simulated using bond graph methodology. The hybrid actuator comprises piezoelectric stack actuator, mechanical flexural amplifier, and hydraulic piston actuator.
Rudraksha Kelkar +3 more
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Control system modeling of hydraulic actuator with compressible fluid flow [PDF]
FME Transactions, 2012 The paper treats Riemann's partial differential equations in the form (1), where variable μ is defined by relation (2). Corresponding boundary conditions are defined in various forms, such as boundary conditions of pressure and flow on the fixed and ...
Janković Jovan J. +2 more
doaj
Refined Modeling Method and Analysis of an Electromagnetic Direct-Drive Hydrostatic Actuation System
Actuators, 2022 The hydrostatic actuation system based on linear actuators improves the complex piston force and long transmission path of the traditional electro-hydrostatic actuator (EHA).
Jiayu Lu +5 more
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Compact Variable-Gap Undulator with Hydraulic-Assist Driver: undulator harmonic energy scan test [PDF]
arXiv, 2021 In the compact variable-gap undulator with Hydraulic-Assist Driver, miniature hydraulic cylinders compensate for ~90% of magnetic forces and mechanical actuators are used to accurately control the undulator gap. This method of hydraulic assist enables design simplicity and compactness of the undulator.
arxiv
Projection of the hydraulic pressure drive with application of partial synthesis
MATEC Web of Conferences, 2018 In this article “Projection of a Hydraulic Pressure Drive with Application of Partial Synthesis” for the best comprehension and also receiving more complete picture, definitions of the term projection are considered, some fields of activity in which it ...
Rybak Alexander T. +3 more
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Development of Proportional Pressure Control Valve for Hydraulic Braking Actuator of Automobile ABS
Applied Sciences, 2018 This research developed a novel proportional pressure control valve for an automobile hydraulic braking actuator. It also analyzed and simulated solenoid force of the control valves, and the pressure relief capability test of electromagnetic thrust with ...
Che-Pin Chen, Mao-Hsiung Chiang
doaj +1 more source