Results 31 to 40 of about 3,510 (216)
Design and Verification of Two-Stage Brake Pressure Servo Valve for Aircraft Brake System
, 2021 Wheel braking devices is some of the most widely used landing deceleration devices in modern aircraft. Jet pipe pressure servo valves are widely used in large aircraft wheel brake control systems because of their high anti-pollution ability, high ...
Yuepeng Xu +5 more
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International Journal of Aerospace Engineering, 2021 The deflector jet pressure servo valve is a kind of high-precision hydraulic component that can be widely used in the antiskid braking system of an aircraft. In actual service, it will be faced with extreme working conditions of gradual oil contamination,
Yuanbo Chu +3 more
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Aircraft Anti-Skid Brake Control Based on High-Speed on-off Valve
MATEC Web of Conferences, 2015 Aircraft hydraulic brake system usually use pressure servo valve for anti-skid brake control. As pressure servo valve realizes the pressure closed loop by hydraulic feedback loop, this structure increased the complexity of the processing and ...
Li Wei, Zhang Hu, Huang Xiaoya
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Control Performance Test of an Electrically-Controlled Variable Valve Timing System Using Servo Motors [PDF]
한국정밀공학회지, 2017 Recently, technologies related to green cars are gaining attention. A variable valve-timing system (VVT) is widely used in internal-combustion engines to improve fuel efficiency and engine performance by controlling the valve open-close timing.
Chung-Il Cho, Hyeong-Joon Ahn
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Microfluidic Valve‐Integrated Garment for Smooth Sequential Gradient Mechanotherapy
Advanced Intelligent Systems, EarlyView.We present a soft wearable sleeve that delivers smooth, gap‐free compression using overlapping air‐filled actuators and tiny microfluidic valves. The system reduces bulk, lowers power needs, and uses a smartphone‐sized control box. It can provide sequential gradient compression, gradient pressure holding, and fast deflation, supporting more portable ...
Run Ze Gao +5 more
wiley +1 more source
High Precise Fuzzy Control for Piezoelectric Direct Drive Electro-Hydraulic Servo Valve
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2012 As the core part of the electro-hydraulic servo system, the electro-hydraulic servo valve plays an important role in the system. Due to the piezoelectric actuator has characteristics of fast response, easy control and high control accuracy, it can be ...
Miaolei ZHOU +3 more
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Energies, 2021 In many heavy machines, the use of high force drives is required. For such tasks, electrohydraulic servo drives with proportional valves are used most often. In these valves, the proportional electromagnets are applied.
Andrzej Milecki, Jarosław Ortmann
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Small‐Scale Magnetic Peristaltic Soft Robot With Mobility and Transport Capabilities
Advanced Intelligent Systems, EarlyView.This study introduces a miniature, untethered soft magnetic microrobot with peristaltic capabilities for both locomotion and cargo transport. Eight helically magnetized elastomeric strips deform under rotating fields (10–80 mT, 1–5 Hz), enabling movement across rods and lumina at up to 4.1 body lengths min‐¹.
Mohammad Hasan Dad Ansari +4 more
wiley +1 more source
Study on the Digital Hydraulic Driving System of the Belt Conveyor
Machines, 2022 The electrohydraulic equipment of the coal gangue belt conveyor has been widely studied in recent years, but studies have been limited to the traditional hydraulic system with proportional valve and servo valve as control elements.
Meisheng Yang
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Aprimoramento e caracterização do comportamento operacional de uma válvula rotativa inercial [PDF]
, 2012 Tese (Doutorado)- Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Mecânica, Florianópolis, 2010Nos últimos anos, as inovações em sistemas de controle hidráulicos têm recaído, principalmente, em ...
Souza, Alisson Dalsasso Corrêa de
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