Results 91 to 100 of about 1,028 (195)
A parsimonious model for the proportional control valve
, 2001 A generic non-linear dynamic model of a direct-acting electrohydraulic proportional solenoid valve is presented. The valve consists of two subsystems-s-a spool assembly and one or two unidirectional proportional solenoids.
Gentle, CR, Elmer, KF
core
The technical roadmap of the development of variable pitch propeller governors for turboprop
Hangkong gongcheng jinzhanThe variable pitch governor controls the propeller to maintain a constant speed，so that the propeller can be energy-saving and efficient in a wider range of flight envelope.
CHEN Tingting, GUO Yong, PAN Zhongjian
doaj +1 more source
Análise teórico-experimental de falhas em válvulas direcionais servoproporcionais [PDF]
, 2012 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2009.Este trabalho trata da detecção e diagnóstico de falhas em válvulas de controle contínuo ...
Ramos Filho, José Roberto Branco
core
Modelling and LPV control of an electro-hydraulic servo system [PDF]
, 2006 This paper aims to show the modelling and control of an hydraulic servo system, targeting at frequency domain based controller design and the implementation of a LPV controller.
Post, WJAEM Wil +10 more
core +1 more source
A Novel Composite Control Algorithm for Restraining Nonlinear Superfluous Forces
IEEE Access, 2019 A novel composite control algorithm is proposed to restrain nonlinear superfluous forces of a dual-channel load simulator. The dual-channel load simulator is utilized to measure the dynamic characteristic of an integrated hydraulic driving unit.
Lingxiao Quan +3 more
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Research to the Wear and Geometric Error Relations of Electro hydraulic Servo Valve
Procedia Engineering, 2011 AbstractThe working principle, failure modes and failure causes of the jet pipe servo valve has been analyzed. Get the main failure modes of the servo valve, which is caused by wear. The influences of the arris edge geometric error on the performance of the servo valve been analyzed. Get the wearing capacity equal to the edge arris geometric error.
Bi, Huang xin, Yao, Jin yong, Li, Yuan
openaire +1 more source
Neural Network Identification and Controller on Electro-hydraulic Servo System
Journal of Harbin University of Science and Technology, 2017 The neural networks system identification was used in nonlinear model on valve-control-cylinder electro-hydraulic position servo system. The three layers BP neural network weights and threshold were optimized using LM genetic algorithm，the relationship ...
HAN Gui-hua, WANG Peng-fei, ZHANG Ci-jun
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Mechanics & IndustryElectro-hydraulic position servo system of valve-controlled symmetrical cylinder (EPSSVCS) is a very important and widely used electro-hydraulic servo system, the performance of which is often affected by friction nonlinearity and external random ...
Chen Hongsheng
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Effect of Slide Valve Gap Surface Roughness on Particle Transport Properties
AerospaceFuel electro-hydraulic servo valves are core components in the fuel control system of aero-engines, and their performance directly affects thrust regulation and power output precision.
Jin Zhang +6 more
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Design and Analysis of Hydraulic Full-Bridge Network for Water Hydraulic Servo Valve
, 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