Results 71 to 80 of about 10,746 (231)

Nonlinear dynamic analysis and control of a hydraulic press electro-hydraulic servo system

Journal of Low Frequency Noise, Vibration and Active Control, 2019
The internal electro-hydraulic servo system of a hydraulic press is affected by the non-linear friction, and it becomes non-linear, unstable under vibration. In this study, the dynamic behavior and control of such a system were investigated.
Chin-Tsung Hsieh, Chien-Pang Lai
doaj   +1 more source

Hydrodynamic Removal of Sediments in Open Irrigation Channel

Modern Agriculture, Volume 3, Issue 2, December 2025.
The experimental study investigated the hydraulic behaviour of particle transport in an irrigation channel equipped with submerged longitudinal structures designed to reduce the effective cross‐sectional area. The findings demonstrate that the placement of parallel barriers along the flow axis generates localized acceleration and turbulence, which ...
Israel E. Herrera‐Díaz, Rosario Martínez‐Yáñez, Edith A. Gamiño‐Ramírez, César Gutiérrez‐Vaca   +3 more
wiley   +1 more source

Improvement of Mechanical Performance of Large Capacity Dry‐Type On‐Board Traction Transformer Under Short‐Circuit Electromagnetic Force

High Voltage, Volume 10, Issue 6, Page 1558-1570, December 2025.
ABSTRACT The application of dry‐type on‐board traction transformers (D‐OBTTs) aims to achieve lightweight electric multiple units (EMUs) and support the approach for carbon neutrality. However, the production of large capacity D‐OBTTs are limited due to the defects in insulation materials under the impact of short‐circuit electromagnetic force.
Woyang Li, Dongyang Wang, Yingyi Xia, Tiandong Chen, Lijun Zhou, Qian Lei, Yunyun Qian   +6 more
wiley   +1 more source

Proposed Feedback-Linearized Integral Sliding Mode Control for an Electro-Hydraulic Servo Material Testing Machine

Machines
High-precision tracking of an electro-hydraulic servo material testing machine’s force control system was achieved using a proposed integral sliding mode control method based on feedback linearization to improve the machine’s force control performance ...
Chungeng Sun, Jipeng Li, Ying Tan, Zhijie Duan   +3 more
doaj   +1 more source

Semi-physical real-time control of electro-hydraulic proportional position servo system based on Matlab/xPC

The Journal of Engineering, 2018
A set of semi-physical simulation system based on real-time working simulation platform tools (Matlab/RTW) was established for electro-hydraulic proportional position servo system in the development of missile weapons and other equipment.
Zhenxin He, Yongbao Feng, Yuan Liu, Liang Li, Changlin Ma, Hao Wang   +5 more
doaj   +1 more source

Redundant actuator development program [PDF]

Two concepts of redundant secondary actuator mechanization, applicable to future advanced flight control systems, were studied to quantitatively assess their design applicability to an AST.
Chenoweth, C. C., Fain, D. M., Svensson, C. I.   +2 more
core   +1 more source

Effect of Copper Content on the Microstructure and Mechanical Properties of As‐Cast Refractory MoNbTi Multiprincipal Element Alloys

Advanced Engineering Materials, Volume 27, Issue 21, November 2025.
Copper addition profoundly impacts MoNbTi multiprincipal element alloys. This study reveals copper's dual role, promoting microstructural refinement and strengthening intermetallics at optimal concentrations. An ideal copper content significantly boosts hardness and compressive strength, achieving superior mechanical performance.
Eder Lopes Ortiz, João Felipe Queiroz Rodrigues, Renato Baldan, Erik Poloni, Giovana da Silva Padilha, Wislei Riuper Osório, Ausdinir Danilo Bortolozo   +6 more
wiley   +1 more source

Finite-Time Neural Adaptive Control of Electro-Hydraulic Servo Systems with Minimal Input Delay and Parametric Uncertainty via Padé Approximation

Mathematics
Physical coupling, nonlinearity and uncertainty degrade the dynamic performance of electro-hydraulic servo systems, particularly under conditions involving input delays, leading to reduced trajectory tracking accuracy or even system instability.
Shuai Li, Ke Yan, Yuanlun Xie, Qishui Zhong, Jin Yang, Daixi Liao   +5 more
doaj   +1 more source

Nonlinear Robust Adaptive Control of Electro-hydraulic Position Servo System

International Journal of Control and Automation, 2014
For the influence of time varying parameter on servo accuracy of electro-hydraulic position servo system, nonlinear robust adaptive controller with the ability of restraining the parameter perturbation for symmetry valves-control symmetry cylinder system is put forward which is based on the Lyapunov stability theory, The nonlinear state equation of ...
Junpeng Shao, Guitao Sun, Xiaoning Mu
openaire   +1 more source

A flight investigation of oscillating air forces: Equipment and technique [PDF]

The equipment and techniques are described which are to be used in a project aimed at measuring oscillating air forces and dynamic aeroelastic response of a swept wing airplane at high subsonic speeds.
Reed, W. H., III
core   +1 more source