Results 131 to 140 of about 349 (175)

Degradation behavior analysis of electro-hydraulic servo valve under erosion wear

2013 IEEE Conference on Prognostics and Health Management (PHM), 2013
This paper presents a simulation analysis method of degradation behavior for electro-hydraulic servo valve (EHSV). Unlike traditional statistical methods, our work is motivated by the failure mechanism of erosion wear. We assume that degradation trend of flow characteristic is related to structure wear in the valve components.
Kun Zhang, Jinyong Yao, Tongmin Jiang, Xizhong Yin, Xiaobo Yu   +4 more
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Simulation of the Nozzle Electro-Hydraulic Servo Valve with ITI-SimulationX

Advanced Materials Research, 2013
The structure and principle of the nozzle electro-hydraulic servo valve was introduced, and the complicated characteristics of mechanical, electrical, hydraulic, and magnetic are studied in this paper. The model of the nozzle electro-hydraulic servo valve was built based on the ITI-SimulationX software platform.
En Qiao Jiang, Shu Han Wang, Jing Ke Du, Xiang Yang Xu, Wen Yong Li   +4 more
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Electro-Hydraulic Servo Valve — Applications in Construction Machinery

SAE Technical Paper Series, 1967
<div class="section abstract"><div class="htmlview paragraph">This paper describes four general types of servo-valves and lists some of the advantages and problems of their use in controlling construction machinery. It describes in detail two applications to construction machinery showing the associated electronic sensing and amplifying ...
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New Modeling and Analysis of Three-Stage Electro-Hydraulic Servo Valve

2008 International Workshop on Modelling, Simulation and Optimization, 2008
To develop higher performance three-stage electro-hydraulic servo valve, a new modeling software, AMEsim, is used to develop its non-linear model according to the construction and principles presented in this paper. The results of simulation and experimental test about an existing valve are consistent, which proves the model is right.
Xiaochu Liu, Qitao Huang, Dacheng Cong, Junwei Han, Lin Xiao   +4 more
openaire   +1 more source

Performance improvement of electro-hydraulic servo valve based on pole placement

2015 15th International Conference on Control, Automation and Systems (ICCAS), 2015
Performance of servo valve has already been analyzed and improved in the S-domain which is a kind of classical control. In this paper, performance improvement of servo valve is conducted by pole placement that is a method of modern control. Consequently, controllability and stability of suggested model is confirmed and performance improvement is ...
Ji U Kim, So Nam Yun, Eun-A Jeong, Yoshito Tanaka   +3 more
openaire   +1 more source

Applying the Electro-Hydraulic Servo Valve to Industry

IRE Transactions on Industrial Electronics, 1958
The industrial control field is constantly adapting new techniques and procedures. These changes are motivated by industry's need to tum out their products faster and with greater precision. To make these improvements possible the manufacturers of mechanical, electrical, pneumatic, and hydraulic equipment are constantly developing new components and ...
openaire   +1 more source

Research on Electro-hydraulic Servo Valve Structure and Control Algorithm of System with Servo Valve

Recent Patents on Engineering
Background: With the continuous progress of electronic information technology, people have begun to study the combination of electronic information technology and hydraulic technology to achieve more accurate and flexible control. Electro-hydraulic servo technology was thus developed.
Jianying LI, Zhao Wang, Qi Guo, Liqun Jiang, Xiaoqiu Zhang   +4 more
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Simulation Model and Experimental Verification of Electro-Hydraulic Servo Valve

Applied Mechanics and Materials, 2013
Structure and working principle of the two-stage moving coil electro-hydraulic servo valve has been analyzed. Through Laplace transformation to get the transfer function by the dynamic equations of the moving coil force motor, the displacement and current double closed loop control to simulate the force output characteristics, ignoring the ...
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Life Evaluation of Electro-Hydraulic Servo Valve Based on Wear Mechanism

Applied Mechanics and Materials, 2014
Electro-hydraulic servo valve is the key component in electro-hydraulic servo control system, it has high reliable assemblies over a long period of time. This paper utilizes the accelerated degradation testing to evaluate their reliability and life. Firstly, the wear failure mechanism of electro-hydraulic servo valve is analyzed to determine.
Xiao Hong Wang, Qiu Xi Li, Ya Li Feng
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Fault diagnosis of electro-hydraulic servo valve based on neural network

2011 International Conference on Electric Information and Control Engineering, 2011
Electro-hydraulic servo valve is a kind of equipment that always leads to some faults in the automatic gauge control system of the strip rolling mill. In order to diagnose faults of electro-hydraulic servo valves better, a three layers BP neural network was designed based on collection and analysis on the characteristic information of some their faults
Shubin Tan, Jianchang Liu
openaire   +1 more source