Results 1 to 10 of about 3,510 (216)

Direct-Drive Electro-Hydraulic Servo Valve Performance Characteristics Prediction Based on Big Data and Neural Networks [PDF]

open access: yesSensors, 2023
Direct-drive electro-hydraulic servo valves play a key role in aerospace control systems, and their operational stability and safety reliability are crucial to the safety, stability, and efficiency of the entire control system. Based on the prediction of
Juncheng Mi, Jin Yu, Guoqin Huang
doaj   +3 more sources

CFD-Based Physical Failure Modeling of Direct-Drive Electro-Hydraulic Servo Valve Spool and Sleeve [PDF]

open access: yesSensors, 2022
Direct-drive electro-hydraulic servo valves are used extensively in aerospace, military and control applications, but little research has been conducted on their service life and physical failure wear.
Guoqin Huang   +3 more
doaj   +3 more sources

Analysis of pressure oscillation and structural parameters on the performance of deflector jet servo valve

open access: yesAlexandria Engineering Journal, 2023
The performance of deflector jet servo-valve is highly affected by the flow field characteristics in the pilot stage of the deflector jet servo-valve. This research used the large eddy simulation method to study the pressure pulsation characteristics of ...
Hazem K. Abdallah   +2 more
doaj   +4 more sources

Analysis of the static and dynamic characteristics of the electro-hydraulic pressure servo valve of robot [PDF]

open access: yesScientific Reports, 2023
In this study, we comprehensively investigate the structure and operational principles of the Rotary Direct Drive Electro-Hydraulic Pressure Servo Valve (RDDPV).
Jianrui Zhang   +4 more
doaj   +2 more sources

Early Fault Symptom Diagnosis of Aircraft Electro-hydraulic Servo Valve

open access: yesHangkong gongcheng jinzhan, 2020
Electro-hydraulic servo valve is an important part of aircraft brake system, which affects the safety of aircraft landing. In order to solve the problem of frequent failure of a certain type of electro-hydraulic servo valve, a model of electro-hydraulic ...
JIN Guotao
doaj   +2 more sources

Mechanism of temperature-induced zero drift on electro-hydraulic servo valve

open access: yesAIP Advances, 2021
An electro-hydraulic servo valve is objectively asymmetrical in the process of fabrication and assembly, and the zero position is the result of comprehensive adjustment.
Li Ma, Hao Yan, Cunkun Cai, Yukai Ren
doaj   +2 more sources

Analysis and Suppression of Self-Excited Oscillations in Pressure Servo Valve System

open access: yesApplied Sciences, 2022
In this paper, the phenomenon of pressure servo valve system self-excited oscillation is studied, the dynamic model of the system is established, and the validity of the model is verified by experimental analysis.
Jian Huang   +4 more
doaj   +2 more sources

Development of a Four-Way Pinch-Type Servo Valve for Pneumatic Actuator

open access: yesApplied Sciences, 2020
Pneumatic servo valves are key components of pneumatic servo systems. Multi-degree-of-freedom systems, such as robot systems, utilize many servo valves to control their actuators.
Kotaro Tadano   +2 more
doaj   +2 more sources

Influence of Vibration on Servo Valve Performance and Vibration Suppression in Electro-Hydraulic Shaking Table

open access: yesMachines
With the rapid progress of industrial technology in recent years, servo controllers have the characteristics of precise control and short response time and are widely used in different industrial fields.
Tao Wang   +3 more
doaj   +2 more sources

Experimental research of flow servo-valve [PDF]

open access: yesEPJ Web of Conferences, 2017
Positional control of pneumatic drives is particularly important in pneumatic systems. Some methods of positioning pneumatic cylinders for changeover and tracking control are known. Choking method is the most development-oriented and has the greatest potential.
Takosoglu Jakub, Jakub Takosoglu
openaire   +3 more sources

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