Results 11 to 20 of about 4,776,728 (268)
Active Pressure Ripple Reduction of a Self-Supplied Variable Displacement Pump with Notch Least Mean Square Filter [PDF]
Micromachines, 2021 As the power sources in hydraulic systems, variable displacement axial piston pumps generate flow fluctuation. Unfortunately, it results in pressure pulsation which excites the system vibration and emitted noise.
Xiaochen Huang +5 more
doaj +5 more sources
Ripples formed in low-pressure wind tunnels suggest Mars’s large windblown ripples are not impact ripples [PDF]
Nature CommunicationsSand ripples record interactions between planetary surfaces and environmental flows, providing paleoenvironmental archives when preserved into rocks.
Carlos A. Alvarez +3 more
doaj +5 more sources
Numerical Study on Improved Geometry of Outlet Pressure Ripple in Parallel 2D Piston Pumps
Aerospace, 2022 Because the axial piston pump is often used in the aerospace and aviation fields, it is necessary to pay attention to its outlet pressure and flow characteristics.
Yu Huang +5 more
doaj +4 more sources
Machines, 2023 Positive displacement pumps are widely employed for their characteristics, but the pulsating flow they produce is a major and well-known drawback. To reduce the flow ripple produced by the pump, which in turn generates a pressure ripple, many methods ...
Paolo Casoli +2 more
doaj +4 more sources
Energies, 2019 Pressure ripple has always been a major drawback in hydraulic circuits, since it is the main source of the overall noise emitted by the pump. This article presents a theoretical analysis on the active control of the pressure ripple in an axial piston ...
Paolo Casoli +3 more
doaj +4 more sources
Alexandria Engineering Journal, 2023 Raising rotational speed and operating pressure is an effective way to increase the power density of axial piston pumps. However, the axial piston pump with standard hollow pistons suffers from problems of volumetric losses, pressure ripple, and ...
Qun Chao +3 more
doaj +4 more sources
Hydraulic Pressure Ripple Energy Harvesting: Structures, Materials, and Applications [PDF]
Advanced Energy Materials, 2022 The need for wireless condition monitoring and control of hydraulic systems in an autonomous and battery‐free manner is attracting increasing attention in an effort to provide improved sensing functionality, monitoring of system health, and to avoid ...
Huifang Xiao +6 more
semanticscholar +2 more sources
Reduction of pressure ripple in the hydraulic micropower unit
Engineering Mechanics, 2022 : The growing requirements as to the permissible normative values of noise generated by machines stimulate the development of methods of reducing noise emission.
M. Stosiak +3 more
semanticscholar +2 more sources
3D CFD numerical analysis of vane dynamic effects on the pressure ripple in a variable displacement vane pump [PDF]
E3S Web of Conferences, 2020 A numerical three-dimensional CFD analysis of a variable displacement vane pump has been conducted, investigating the effects on the pressure ripple caused by the vane detaching from the pressure ring.
Marinaro Gianluca +4 more
doaj +2 more sources
The influence of line and fluid parameters on pressure ripple in hydraulic transmissions [PDF]
SN Applied Sciences, 2020 Fluid borne noise sources in realistic hydraulic circuits can be affected by many geometric line details and the changing properties of working fluid. These phenomena need to be better understood and quantified for achieving inherent quietness through computationally designed hydraulic circuits.
L. Danes, A. Vacca
semanticscholar +2 more sources