Results 21 to 30 of about 4,776,728 (268)

Swash plate design for pressure ripple reduction – A theoretical analysis [PDF]

AIP Conference Proceedings, 2019
The delivery pressure ripple has always been a critical aspect in fluid power applications, since it generates noise and stresses the hydraulic circuit components at the delivery side of the pump.
P. Casoli, Mirko Pastori, F. Scolari
semanticscholar   +2 more sources

Theoretical Analysis of Active Flow Ripple Control in Positive Displacement Pumps

Energies, 2022
Positive displacement machines present a well-known major drawback that is the oscillation in delivered flow rate. This paper presents two active solutions for reducing the flow ripple generated by a pump with an external device actuated by means of a ...
Paolo Casoli, Carlo Maria Vescovini, Fabio Scolari, Massimo Rundo   +3 more
doaj   +3 more sources

Pressure ripple of gear pumps affected by air content on trapped volume [PDF]

Journal of Vibroengineering, 2016
A general assumption about fluid power systems is that the pressure ripple of trapped volume is a primary source for fluid-borne noise. Whereas the high frequency vibration characteristics generated by pressure fluctuations of trapped volume are ...
X. Hao, Xiaojun Zhou, Xiaoguang Liu, X. Sang   +3 more
semanticscholar   +2 more sources

RIPPLE STUDY PRESSURE PLATE VODOBOYNUYU HYDRAULIC STRUCTURES

Вестник Северо-Кавказского федерального университета, 2022
The analysis of the results of experiments to determine the values of the pressure pulsations in the area vodo-boynoy plate for overflow dam at various modes soprezheniya forebay.
V. M. Ivanov, S. G. Pchelintsev, P. V. Rozhkov, S. V. Skorikov, I. A. Stoyan   +4 more
doaj   +1 more source

Effects of Driving Current Ripple Fluctuations on the Liquefied Layer of the Armature–Rail Interface in Railguns

Energies
During the electromagnetic launching process, the actual current input into the launcher is obtained by controlling the discharge of the pulsed power supply.
Wen Tian, Gongwei Wang, Ying Zhao, Weikang Zhao, Weiqun Yuan, Ping Yan   +5 more
doaj   +2 more sources

Torque Ripple Minimization in Switched Reluctance Motors With Acoustic Noise Mitigation by Current Waveform Shaping

IEEE Open Journal of Industry Applications
This article presents a novel method for torque ripple reduction in switched reluctance motors (SRMs). The proposed method relies on current waveform shaping.
Fares S. El-Faouri, Yifei Cai, Shou Qiu, Chenyang Lyu, Jacob Bayless, Kyohei Kiyota, Wejdan Abu Elhaija, Akira Chiba   +7 more
doaj   +2 more sources

Evaluation of Tooth Space Pressure and Incomplete Filling in External Gear Pumps by Means of Three-Dimensional CFD Simulations

Energies, 2021
The paper presents the computational fluid dynamics simulation of an external gear pump for fluid power applications. The aim of the study is to test the capability of the model to evaluate the pressure in a tooth space for the entire shaft revolution ...
Alessandro Corvaglia, Massimo Rundo, Paolo Casoli, Antonio Lettini   +3 more
doaj   +1 more source

One-Dimensional Fluid Dynamic Modeling of a Gas Bladder Hydraulic Damper for Pump Flow Pulsation

Energies, 2023
Positive displacement pumps produce pressure ripple that can be reduced with the attenuation of the generated flow ripple. This paper presents the application of a gas bladder hydraulic damper with the aim of reducing the oscillations of the delivery ...
Paolo Casoli, Carlo Maria Vescovini, Massimo Rundo   +2 more
doaj   +1 more source

Numerical simulation and experimental evaluation of flow ripple characteristics of Truninger pump

Scientific Reports, 2022
Compared with involute internal gear pumps and gerotor pumps, lower flow ripple is the main advantage of Truninger pumps. Understanding the flow ripple mechanism and characteristics is of great significance to guide the design and manufacture of this ...
Yundong Liang, Zongbin Chen, Jian Liao
doaj   +1 more source

A Tandem Axial-Piston Unit Based Strategy for the Reduction of Noise Sources in Hydraulic Systems

Energies, 2020
This article presents a novel passive fluid borne noise source reduction strategy, based on tandem axial-piston unit indexing with the usage of symmetric lines.
Leandro Danes, Andrea Vacca
doaj   +1 more source