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Heat Characteristics Analysis of Electro-Hydraulic Servo Valve
Journal of Thermal Science and Engineering Applications, 2019A new method of building electro-hydraulic servo valve's thermal model is proposed. In this method, energy conservation equation of servo valve was obtained according to thermodynamics, which describes servo valve's heat conduction, heat convection, and heat radiation with other hydraulic components.
Yannan Zhu +4 more
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Fault Diagnostic of Electro-Hydraulic Servo Valve
Advanced Materials Research, 2012In order to achieve the fault diagnostic and degradation assessment of the electro-hydraulic servo valve, a system of prognostic and health management based on the data-driven approach for the electro-hydraulic servo valve is presented. FMMEA performed in this study considered the degree of sub-components in electro-hydraulic servo valve.
Hai Yang Pan +3 more
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Research of non-servo valve electro-hydraulic servo system
Proceedings of 2011 International Conference on Electronic & Mechanical Engineering and Information Technology, 2011A new non-servo valve electro-hydraulic servo system was researched. To control load, the system uses bidirectional fixed displacement hydraulic pump that is driven by AC PMSM directly drives servo-hydraulic cylinder. The hydraulic actuating unit was designed base on one design parameter and performance target.
Geqiang Li, Hanjie Wang, Xiaodong Huang
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Multidomain Modeling of Jet Pipe Electro-Hydraulic Servo Valve
Applied Mechanics and Materials, 2012The jet pipe electro-hydraulic servo valve is a typical two-stage flow control servo valve, its static and dynamic characteristics are analyzed in this paper. The interaction of the mechatronic and hydraulic system is considered by multidomain simulation tool, the all key parameters are tunable and this provides the optimal possibility to develop a ...
Yun Jiang Cheng +3 more
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Iterative Learning Control of Double Servo Valve Controlled Electro Hydraulic Servo System
2011 Seventh International Conference on Computational Intelligence and Security, 2011Aimed at electro-hydraulic servo force control system, according to the nonlinear of electric-hydraulic servo valve, to improve the speed of equivalent valve response, we propose the double electric-hydraulic servo valve parallel control, and two servo valve are controlled by their respective controller, the same signal inputs two controller, every ...
Yu Shaojuan, Song Junjun
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Simulation-Based Performance Degradation Prognostics of Electro-Hydraulic Servo Valve
Applied Mechanics and Materials, 2014Simulation-based performance degradation prognostics should firstly obtain the judgment criterion to predict degradation failure, how systems or its components degenerate, and then how to display effect of degradation process on performance. In this paper, we presented a model-based performance degradation prognostic method to address this problem. For
Zi Tan Zhao, Jian Bin Guo
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Degradation behavior analysis of electro-hydraulic servo valve under erosion wear
2013 IEEE Conference on Prognostics and Health Management (PHM), 2013This 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 +4 more
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Simulation of the Nozzle Electro-Hydraulic Servo Valve with ITI-SimulationX
Advanced Materials Research, 2013The 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 +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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