Results 31 to 40 of about 249,552 (211)
Comparison of jet pipe servo valve with flapper nozzle servo valve
Science and Technology Development Journal, 2017 Electro-hydraulic servo valves (EHSVs) serve as an interface between electrical devices and hydraulic systems. They are capable of converting low power electrical input into movement of a spool to control precisely high power, low speed hydraulic actuators.
Tran Thien Phuc, Pham Xuan Hong Son
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Displacement comparison of hydraulic servo-motor when servo valve is stuck.
, 2023 Displacement comparison of hydraulic servo-motor when servo valve is stuck.
Qing Li (84975), Ling Zhong (209116)
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Development of rotary servo valve
Proceedings of the JFPS International Symposium on Fluid Power, 1993 Conventional electro-hydraulic servo valves have sleeves and spools which move axially to control the flow of fluid. However, very high manufacturing technology is required to make them. This paper describes a newly developed rotary servo valve that has a simple structure and is directly operated.
NOGAMI, TADAHIKO +3 more
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A Digital Hydraulic Valve, Actuated Using a Piezoelectric Linear Motor [PDF]
, 2011 Proportional control in hydraulics is widely utilized. The most widely used current types of proportional valves utilize solenoid technology. While this technology has been around for decades and has been proven an effective means of control, there is ...
Bevill, Brian C
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Built-in test technology for electro-hydraulic servo-valve amplifier
Zhongguo Jianchuan Yanjiu, 2021 Objectives The electro-hydraulic servo valve operates in a harsh working environment but lacks integrated testability. In order to improve the usability and maintainability of electro-hydraulic servo valves, it is necessary to design a built-in test (BIT)
Jianping YUAN, Hanbing SUN
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Development of a Photo-Fluidic Control Valve without Mechanical Moving Parts
Journal of Fluid Science and Technology, 2010 An optical servo system is a new control system which can be used in hazardous environments; such as those with electromagnetic influence, radiation and so on. The purpose of our study is to develop such an optical control system.
Tetsuya AKAGI, Shujiro DOHTA
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IEEE Access, 2020 For the purpose of reducing power consumption of a leg exoskeleton for augmenting human performance, a novel hybrid hydraulic system (HHS) which includes a unidirectional servo valve and a solenoid on-off valve is excogitated, and its energy saving ...
Yong Yang +3 more
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Research on thermodynamic modeling and temperature prediction of double flapper-nozzle servo valves
Case Studies in Thermal EngineeringThe thermal characteristic design of the aerospace servo valve is of significant importance due to the high temperature operating conditions. This paper aims to study the law of temperature variation of the internal chambers and shell of the servo valve ...
Lei Li, Gen Wang, Libo Qiu, Cunkun Cai
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Analysis and optimization of the pilot stage of jet pipe servo valve
Alexandria Engineering Journal, 2022 Based on the principle of two-phase hydrodynamics and the mechanism of cavitation generation, this paper uses the finite volume method (FVM) in computational fluid dynamics (CFD) to analyse the features of fluid flow in jet amplifier, i.e., the pilot ...
Ying Zhang
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The Journal of Engineering, 2019 A directional drilling tool control unit whose design is based on servo control of a rotary valve using the roll-stabilised instrumented system approach has been successfully used in oil fields for over 20 years.
Hamid Alturbeh +3 more
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