Results 21 to 30 of about 450,434 (280)

Research on impedance network modeling and output characteristics of magnetostrictive electro-hydraulic actuator

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2023
Magnetostrictive electro-hydraulic actuator (M-EHA) is a highly integrated hydraulic servo device with very complex movement and conduction processes. The output performance could be affected by many factors.
Menglun TAO, Feng LIN, Liang SHU, Hongbi DENG, Yeheng ZHANG   +4 more
doaj   +1 more source

Nonlinearities in Control Description and Design of an Electro Hydraulic Actuator for Flexible Nozzle Thrust Vector Control

Actuators, 2018
This paper presents all the significant nonlinearities that exist in the description of an electro hydraulic actuator for flexible nozzle thrust vector control. Starting from practical possibilities of the theory of a nonlinear system (which are based on
Dragan Nauparac, Dragan Prsic, Marko Milos   +2 more
doaj   +1 more source

Nonsmooth Quasistatic Modeling of Hydraulic Actuators

CoRR, 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
Ryo Kikuuwe, Tomofumi Okada, Hideo Yoshihara, Takayuki Doi, Takao Nanjo, Koji Yamashita   +5 more
openaire   +2 more sources

Delivery actuator for a transcervical sterilization device [PDF]

, 2010
The use of delivery systems in the human body for positioning and deploying implants, such as closure devices, dilation balloons, stents, coils and sterilization devices, are gaining more importance to preclude surgical incisions and general anesthesia ...
Rehan, Muhammad, J. Coleman, Olabi, Abdul-Ghani, M. Rehan, Coleman, J., A.G. Olabi   +5 more
core   +2 more sources

Bond Graph Modeling and Simulation of Hybrid Piezo-Flexural-Hydraulic Actuator

Engineering Proceedings
In 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, Mohith Santhya, Mithun Kanchan, Omkar S. Powar   +3 more
doaj   +1 more source

Disturbance Observer Based Finite Time Trajectory Tracking Control for a 3 DOF Hydraulic Manipulator Including Actuator Dynamics

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, Tran Duc Thien, Truong Hoai Vu Anh, Kyoung Kwan Ahn   +3 more
doaj   +1 more source

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., Petrović Nebojša B., Mitrović Časlav B.   +2 more
doaj  

A piezoelectric microvalve for compact high frequency high differential pressure micropumping systems

, 2003
A piezoelectrically driven hydraulic amplification microvalve for use in compact high-performance hydraulic pumping systems was designed, fabricated, and experimentally characterized. High-frequency, high-force actuation capabilities were enabled through
Steyn, J.L., Roberts, D.C., Yaglioglu, O., Hagood, N.W., Schmidt, M.A., Spearing, S.M., Li, H.   +6 more
core   +1 more source

Stone stability in breakwater toes based on local hydraulic conditions [PDF]

, 2014
This study investigates the stability of rocks in breakwater toes. Previous studies have coupled the toe stability directly to the wave height, which is not physically accurate.
Peters, R.B.M. (Ruben), Peters, R.B.M. (author)   +1 more
core   +1 more source

A Spatiotemporal Domain-Coupled Clustering Method for Performance Prediction of Cluster Systems

Actuators
The performance prediction of the Five-hundred-meter Aperture Spherical radio Telescope (FAST) project represents one of the primary challenges faced by the system.
Yirui Zhang, Wei Cai, Jianxin Zhang, Ming Zhu, He Wang   +4 more
doaj   +1 more source