Results 31 to 40 of about 7,480 (290)

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

Active Disturbance Rejection Position Synchronous Control of Dual-Hydraulic Actuators with Unknown Dead-Zones

Sensors, 2020
In this paper, an integrated control strategy of position synchronization control for dual-electro-hydraulic actuators with unknown dead-zones is proposed. The unified control scheme consists of two parts: One is adaptive dead-zone inverse controllers of
Lixin Wang, Dingxuan Zhao, Fucai Liu, Qian Liu, Zhuxin Zhang   +4 more
doaj   +1 more source

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

Designing redundant metering valves for hydraulic actuators under mixability and low cost-constraints [PDF]

, 2010
This article deals with the design of redundant metering valves for mechanically signalled hydraulic actuators. The final aim of the work is to manufacture a new low-cost valve in replacement of the existing expensive valve with an additional leakage ...
Budinger, V., Marger, Thibaut, Pommier-Budinger, Valérie, Marger, T., Thibaut Marger, Malburet, F., Francois Malburet, Valerie Budinger, Malburet, François, Maré, Jean-Charles, Jean Charles Mare   +10 more
core   +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

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

Review on Modeling and Controller Design of Hydraulic Actuator Systems [PDF]

, 2015
The purpose of this paper is to review the literature on modeling and previous control strategies of the hydraulic actuator system proposed by most of the researchers around the world.
K. A. Danapalasingam, S.M. Othman, M.F. Rahmat, S. Salleh   +3 more
core   +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 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

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, Arkadiusz Jakubowski, Arkadiusz Kubacki   +2 more
doaj   +1 more source