Results 61 to 70 of about 3,471 (214)

Characteristics of Position and Pressure Control of Separating Metering Electro-Hydraulic Servo System with Varying Supply Pressure for Rolling Shear

Applied Sciences, 2020
The traditional valve-controlled hydraulic servo system has large throttling losses and undergoes serious heat problems when used in electro-hydraulic servo systems (EHSSs) for a rolling shear.
Suhong Lin, Gaocheng An, Jiahai Huang, Jun Wang, Yuhang Guo   +4 more
doaj   +1 more source

Direct Drive Volume Control Electro-Hydraulic Servo Ship Rudder

, 2010
Direct drive volume control（DDVC）electro-hydraulic servo system has synthesized the advantages of high power of hydraulic system and flexible control of the motor.
Wen Hai Su, Ji Hai Jiang
core   +1 more source

Characterization of the permeability evolution of hard and soft rocks under hydro‐mechanical coupling conditions

Deep Underground Science and Engineering, Volume 5, Issue 1, Page 220-232, March 2026.
The permeability variation of rocks during complete stress–strain processes was investigated. A mathematical model describing the influence of rock damage on permeability was constructed. The permeability–stress relationship between soft rock and hard rock was proposed.
Zhen Huang, Jian Yu, Yun Wu, Cong Gong, Xiaozhao Li, Kui Zhao, Dickson Moyo   +6 more
wiley   +1 more source

Continuous Rotary Motor Electro-Hydraulic Servo System Based on the Zero Phase Error Tracking Controller

, 2011
In order to suppress the friction and leakage interference of continuous rotary electro-hydraulic servo motor, make the motor tracking the periodic signals with high accuracy, and improve the high frequency response performance of continuous rotary ...
Bo Wu, Xiao Jing Wang, Jian Ying Li, Jun Peng Shao   +3 more
core   +1 more source

Position Control of Electro‐Hydraulic Actuator System With Disturbances Compensation

Energy Science &Engineering, Volume 14, Issue 2, Page 831-842, February 2026.
A novel output feedback controller based on global fast terminal sliding mode with disturbances rejection to achieve accurate position tracking control for electro‐hydraulic cylinder system, which shows the great control potential of the designed output feedback controller during the start‐up and operation of the electro‐hydraulic actuator system ...
Yunfei Wang, Haigang Ding, Jiaxiang Man
wiley   +1 more source

Determinação de pontos de operação para conjuntos válvula-cilindro pneumáticos [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2009Tradicionalmente, o uso da pneumática em aplicações industriais e de automação está centrado em ...
Oliveira, Lidiane Gonçalves de
core  

Failure of Glass Fiber‐Reinforced iPP in Static and Cyclic Loading Characterized by Factorizability of Time, Temperature, and Fiber Orientation

Journal of Applied Polymer Science, Volume 143, Issue 2, January 10, 2026.
By characterizing the deformation rate‐ and temperature‐dependent yield stress on an arbitrary reference fiber orientation and multiplying it with the anisotropic scaling function obtained from the yield stresses measured for various fiber orientations at a single temperature and deformation rate, it is possible to perform lifetime predictions for both
S. J. J. van den Broek, L. E. Govaert, T. A. P. Engels   +2 more
wiley   +1 more source

Position Tracking Control of an Electro-Hydraulic Servo System Based on Nonlinear Disturbance Observers

IEEE Access
In order to ensure a precisely controlled electro hydraulic servo system, a sliding mode control algorithm based on nonlinear disturbance observers (NDOB-SMC) is developed in this study.
Qingqing Xu, Yaxing Lu, Mingxing Yang, Xing Zhang   +3 more
doaj   +1 more source

Extended state observer–based fractional order proportional–integral–derivative controller for a novel electro-hydraulic servo system with iso-actuation balancing and positioning

Advances in Mechanical Engineering, 2015
Aiming at balancing and positioning of a new electro-hydraulic servo system with iso-actuation configuration, an extended state observer–based fractional order proportional–integral–derivative controller is proposed in this study. To meet the lightweight
Qiang Gao, Yuanlong Hou, Tongbin Deng, Chao Wang, Runmin Hou   +4 more
doaj   +1 more source

A New Classification Method of Surrounding Rock Quality for Phyllite Tunnels Under the Condition of Layer Orientation Parallel to the Orientation of Tunnel Axis

Energy Science &Engineering, Volume 14, Issue 1, Page 47-60, January 2026.
Modified Mass Classification of Layered Rock Masses Based on the HC Method. ABSTRACT The HC method for hydropower is a commonly used rock mass quality classification technique in China's hydropower industry. Due to the anisotropic nature of the layered schist in the study area, and the varying angles between different tunnel layers and the tunnel axis,
Jing Yang, Jingyong Wang, Hao Luo, Ping Wang, Chengfeng Wu, Rui Zeng, Yupeng Lu, Hao Man, Feng Ji   +8 more
wiley   +1 more source