Results 91 to 100 of about 3,510 (216)

Design and Analysis of Hydraulic Full-Bridge Network for Water Hydraulic Servo Valve

open access: yes, 2011
Annular gap throttle has been used in water hydraulic slide valve which makes the hydraulic full-bridge network of the water hydraulic servo valve different from that of traditional hydraulic servo valve with fixed orifice.
Shu Wen Sun   +3 more
core   +1 more source

Mathematics Modeling and Simulation Analysis of Dynamic Characteristics forHydraulic Cylinder Controlled by Servo-valve

open access: yes工程科学与技术, 2008
:Different hydraulic servo control system would be obtained through changing load based on cylinder controlled by servo valve.Load pressure-flux characteristics of asmmetrical cylinder controlled by servo-valve was analyzed.
doaj  

Dynamic Modeling and Simulation of Control System for Pneumatic Servo Valve Using Piezoelectric Actuator [PDF]

open access: yes, 2015
In this study design and simulation of controller for piezoelectric pneumatic servo valve is done. The dynamic model of the valve using analytical approach and the working principle of the servo valve is analyzed.
Kiani, Ehsan   +7 more
core   +1 more source

Effect of Internal Leakage on an Electro-Hydraulic Servo-Driven Control Valve Performance

open access: yes, 2011
The principle of an electro-hydraulic servo-driven control valve used to regulate mixed-gas pressure in combined cycle power plant is introduced. The mathematic model for describing the dead-band characteristics of the electro-hydraulic servo-driven ...
Yan Jun Liu, Yu Dong Xie, Yong Wang
core   +1 more source

Integrated Control Design of Pneumatic Servo Table Considering the Dynamics of Pipelines and Servo Valve

open access: yesInternational Journal of Automation Technology, 2011
In this paper, integrated control design for the pneumatic servo table system considering the dynamics of pipelines and servo valve is studied. The table is mainly composed by a pneumatic actuator, a highperformance pneumatic servo valve and pipelines. The pneumatic actuator utilizes a pneumatic cylinder with air bearings.
Jun Li   +4 more
openaire   +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  

Suppression of Squeal Noise Excited by the Pressure Pulsation from the Flapper-Nozzle Valve inside a Hydraulic Energy System

open access: yesEnergies, 2018
Squeal noise often occurs in a two-stage electrohydraulic servo-valve, which is an unfavorable issue of modern hydraulic energy systems. The root causes of such noise from the servo-valve are still unclear.
Meng Chen   +3 more
doaj   +1 more source

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

Visualization of Flow-Field between the Flapper and Nozzle in a Hydraulic Servo-Valve

open access: yes, 2011
In order to understand the mechanism and get rid of the high-frequency self-excited noise in a hydraulic servo-valve, in this paper, the flow field distribution in the pilot stage of a hydraulic flapper-nozzle servo-valve is investigated.
Sheng Zhuo Zhang   +2 more
core   +1 more source

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