Results 11 to 20 of about 22,604 (228)

Research on servo valve-controlled hydraulic motor system based on active disturbance rejection control

open access: yesMeasurement + Control
According to the unstable and nonlinear performances of the servo valve-controlled hydraulic motor, classical control methods based on linear theory are gradually unable to meet the high-performance requirements of the system.
Zhijie Duan   +3 more
doaj   +2 more sources

An adjustable parameter water hammer wave hose testbench [PDF]

open access: yesE3S Web of Conferences, 2021
In this paper, based on the servo valve controlled pressure cylinder, a scheme of hydraulic pipeline adjustable parameters water hammer wave test system is proposed.
Wang Zhe   +3 more
doaj   +1 more source

Establishment and Experimental Verification of a Nonlinear Position Servo System Model for a Magnetically Coupled Rodless Cylinder

open access: yesActuators, 2022
The nonlinear characteristics of the pneumatic servo system are the main factors limiting its control accuracy. A new mathematical model of the nonlinear system of the valve control cylinder is proposed in order to improve the control accuracy of the ...
Yeming Zhang   +6 more
doaj   +1 more source

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   +1 more source

Sistem Kontrol Kadar Gas Karbon Monoksida (CO) Pada Aplikasi Modified Atmosphere Packaging (MAP) Berbasis Fuzzy Logic

open access: yesJurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems), 2020
Karbon Monoksida (CO) dalam teknologi makanan digunakan sebagai salah satu gas komponen penyusun dalam proses Modified Atmosphere Packaging (MAP). Karbon Monokida pada proses MAP digunakan untuk mempertahankan warna daging, dengan konsentrasi 0,3 hingga ...
Reza Supriyatna   +2 more
doaj   +1 more source

Measurement of the mass-flow-rate characterization parameters of high-pressure pneumatic servo slide valves

open access: yesScientific Reports, 2022
The mass-flow-rate characteristics of high-pressure pneumatic servo valves (HPSVs) have an important effect on the dynamic performance of high-pressure servo systems.
Dijia Zhang   +4 more
doaj   +1 more source

Built-in test technology for electro-hydraulic servo-valve amplifier

open access: yesZhongguo 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
doaj   +1 more source

Robust Repetitive Learning-Based Trajectory Tracking Control for a Leg Exoskeleton Driven by Hybrid Hydraulic System

open access: yesIEEE 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
doaj   +1 more source

Comparison of jet pipe servo valve with flapper nozzle servo valve

open access: yesScience 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. Nowadays, jet pipe electro-hydraulic servo valve and flapper nozzle electro-
Tran Thien Phuc, Pham Xuan Hong Son
openaire   +2 more sources

Development of a Photo-Fluidic Control Valve without Mechanical Moving Parts

open access: yesJournal 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
doaj   +1 more source

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