Results 11 to 20 of about 80,855 (244)
High-Frequency Position Servo Control of Hydraulic Actuator with Valve Dynamic Compensation
Actuators, 2022 Hydraulic actuators play an important role in various industries. In the last decades, to improve system performance, some advanced control methods have been developed.
Jian Li +3 more
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Energy Reports, 2021 The valve affects the reliability and efficiency of the reciprocating compressor. The Acoustic Emission (AE) technology is applied to nondestructive measurement of compressor valve movement in this paper. Furthermore, the AE signal is analyzed to predict
Yangyang Zhang +3 more
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A thermoresponsive valve to control fluid flow in microfluidic paper-based devices
Microfluidics and Nanofluidics, 2022 AbstractMicrofluidic paper-based analytical devices (μPADs) have recently attracted the attention of researchers and industry owing to their various advantages. However, µPADs lack a way to control fluid flow; therefore, it is difficult to perform complex immunoassays that use multiple reagents and replace the reagents from the analytical area.
Wataru Iwasaki +7 more
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Magnetic Two-Way Valves for Paper-Based Capillary-Driven Microfluidic Devices [PDF]
ACS Omega, 2018 This article presents a magnetically actuated two-way, three-position (+, 0, -), paper-based microfluidic valve that includes a neutral position (0)-the first of its kind. The system is highly robust, customizable, and fully automated. The advent of a neutral position and the ability to precisely control switching frequencies establish a new platform ...
Mario Fratzl +9 more
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Random vibration analysis of an offshore flexible direct current converter valve [PDF]
E3S Web of Conferences, 2021 With the rapid development of the direct-current grid technology and construction, the flexible direct-current transmission technology has been widely used in many aspects, such as long-distance large-capacity power transmissions, offshore platforms and ...
Lv Wei, Mao Zhiyun, Zhang Lihong
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Microfluidic Time-Delay Valve Mechanism on Paper-Based Devices for Automated Competitive ELISA [PDF]
Micromachines, 2019 Paper-based technologies have been drawing increasing attentions in the biosensor field due to their economical, ecofriendly, and easy-to-fabricate features. In this paper, we present a time-delay valve mechanism to automate a series of procedures for conducting competitive enzyme-linked immunosorbent assay (ELISA) on a paper-based device.
Yu-Ting Lai +3 more
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Characteristic Analysis of Digital Emulsion Relief Valve Based on the Hydraulic Loading System
Shock and Vibration, 2020 In the hydraulic loading system, the performance of digital relief valve plays an important role in the dynamic response of load. However, the research on large-flow emulsion relief valve is still far from perfect.
Lirong Wan +6 more
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Force analysis and fatigue life evaluation of oil well pump valve cover
AIP Advances, 2023 In the beam pumping system, the broken valve cover of the oil well pump frequently leads to oil well failure. This paper examined the alternating load of the oil well pump valve cover and predicted its fatigue life.
Dexin Yuan +3 more
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Simple Way To Fabricate Novel Paper-Based Valves Using Plastic Comb Binding Spines [PDF]
ACS Sensors, 2018 A novel strategy for fabricating the paper-based valves on microfluidic paper-based analytical devices (μPADs) was described to control fluid in a user-friendly way. Initial prototypes of 3D μPADs manipulate the spatial distribution of fluid within the device.
Jinglong Han +5 more
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Controlling Capillary-Driven Fluid Transport in Paper-Based Microfluidic Devices Using a Movable Valve [PDF]
Analytical Chemistry, 2017 This paper describes a novel strategy for fabricating the movable valve on paper-based microfluidic devices to manipulate capillary-driven fluids. The movable valve fabrication is first realized using hollow rivets as the holding center to control the paper channel in different layer movement that results in the channel's connection or disconnection ...
Bowei Li +5 more
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