Results 61 to 70 of about 1,028 (195)

The design, simulation, and experiment of high-accuracy multi-axle electro-hydraulic control servo steering system

open access: yesAdvances in Mechanical Engineering, 2016
Many multi-axle applications use electro-hydraulic control systems with proportional valves. The proportional steering system can satisfy common engineering requirements, but it is likely to fail if the steering angle or load changes drastically because ...
Heng Du, JianHua Wei, JinHui Fang
doaj   +1 more source

Cavitation and flow forces in the flapper-nozzle stage of a hydraulic servo-valve manipulated by continuous minijets

open access: yesAdvances in Mechanical Engineering, 2019
Electro-hydraulic servo-valves play key roles in modern electro-hydraulic power systems in many industrial applications. As one of the widely used hydraulic servo-valves, cavitation in the flapper-nozzle servo-valve could produce deleterious effects of ...
He Yang, Wen Wang, Keqing Lu
doaj   +1 more source

Anti‐Disturbance Model Predictive Control for Triaxial Servo System Based on Q‐Learning Algorithm Friction Identification

open access: yesIET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
This article proposes a novel model predictive control (MPC) strategy for a triaxial servo system with the capability of suppressing multiple disturbances. The discrete state‐space model is built for a triaxial servo system, considering nonlinear disturbances as constraints, and Q‐learning algorithm is used to identify the parameters of the nonlinear ...
Qian Zhang   +3 more
wiley   +1 more source

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

open access: yes, 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  

Research on structure decoupling of passive electro-hydraulic force servo system

open access: yesAdvances in Mechanical Engineering, 2018
In order to study the strong force/position coupling problem of passive electro-hydraulic force servo system, taking the valve control swing motor of passive electro-hydraulic force servo system as an object, a new principle of structure coupling is ...
Geqiang Li   +4 more
doaj   +1 more source

Real Time Simulation Study of DEH for Digital Twin Steam Turbine Generators

open access: yesIET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
The article introduces a new method using digital twin technology to model the digital electro‐hydraulic (DEH) system mathematically, enhancing its comprehensiveness and flexibility. It establishes a mathematical model of the DEH system and simulates its performance under various conditions. The RT‐Lab platform is used to create a simulation testbed to
Yiwei Zhou   +5 more
wiley   +1 more source

Estudo das características comportamentais de válvulas proporcionais e seus efeitos nos posicionadores eletro-hidráulicos [PDF]

open access: yes, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2010A dificuldade de projetar sistemas hidráulicos de controle de posição deve-se principalmente às ...
Muraro, Irving
core  

Research on Flow Press Servo-Valve Controlling Electro-Hydraulic Force Control System and Nonlinear Performance Analysis

open access: yes, 2011
The configuration and the work principle of the flow press hydraulic servo-valve was introduced in this paper, based on this and electromagnetic basic theory, the mechanics analysis of every main parts of the flow press hydraulic servo-valve and the ...
Xiao Jing Wang   +4 more
core   +1 more source

H∞ Control for a Secondary Regulation Electro‐Hydraulic Drive System of Robot Mobile Platform

open access: yesInternational Journal of Intelligent Systems, Volume 2025, Issue 1, 2025.
The secondary regulation hydrostatic transmission technology and H∞ control are applied to the mobile platform of the robot in this paper. The H∞ control system and the secondary regulation electro‐hydraulic drive system of the mobile platform are designed.
Faye Zang, Xiujie Yin, Richard Murray
wiley   +1 more source

Improving Aircraft Engines Prognostics and Health Management via Anticipated Model-Based Validation of Health Indicators [PDF]

open access: yes, 2014
The aircraft engines manufacturing industry is subjected to many dependability constraints from certification authorities and economic background. In particular, the costs induced by unscheduled maintenance and delays and cancellations impose to ensure a
MECHBAL, Nazih   +2 more
core   +1 more source

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