Results 11 to 20 of about 433,316 (304)

Classification and Review of Variable Displacement Fluid Power Pumps and Motors [PDF]

open access: yes, 2023
Displacement control of positive displacement machines has been a part of fluid power since the early days. Some of the early hydraulic presses already used two different displacement settings, though this was realised by using two different pumps rather
Kärnell, Samuel,   +3 more
core   +1 more source

Influence of Coil Current and Oil Film Thickness on Hopf Bifurcation of MLDSB

open access: yesEnergies, 2022
Magnetic-liquid double-suspension bearing (MLDSB) is composed of an electromagnetic supporting system and a hydrostatic supporting system. Due to its greater supporting capacity and stiffness, it is appropriate for middle-speed applications, overloading,
Jianhua Zhao   +6 more
doaj   +1 more source

Customizing a self-healing soft pump for robot

open access: yesNature Communications, 2021
Utilizing soft pumps in soft robotics is an attractive approach to endow untethered soft robots with muscle-like actuation. Here, the authors report bio-inspired soft electronic pumps as driving power sources to drive actuation and self-healing in ...
Wei Tang   +13 more
doaj   +1 more source

Self-protection soft fluidic robots with rapid large-area self-healing capabilities

open access: yesNature Communications, 2023
Soft fluidic robots have attracted a lot of attention and have broad application prospects. However, poor fluidic power source and easy to damage have been hindering their development, while the lack of intelligent self-protection also brings ...
Wei Tang   +13 more
doaj   +1 more source

First results from a 760-GW linear transformer driver module for Z-pinch research

open access: yesMatter and Radiation at Extremes, 2021
In this paper, the results of tests on a 0.76-TW linear transformer driver (LTD) module for Z-pinch research are presented for the first time. Ten LTD cavities, each generating a 1-MA/90-kV pulse on a matched load, were connected in series with a ...
Lin Chen   +11 more
doaj   +1 more source

A semantic analysis-driven customer requirements mining method for product conceptual design

open access: yesScientific Reports, 2022
Precise customer requirements acquisition is the primary stage of product conceptual design, which plays a decisive role in product quality and innovation.
Xuan-Yu Wu   +5 more
doaj   +1 more source

The History and Future of Fluid Power Pumps and Motors [PDF]

open access: yes, 2022
Positive displacement pumps have been around for thousands of years, but it was first in the beginning of the 19th century they started to be used for power transmission purposes.
Kärnell, Samuel,, Kärnell, Samuel
core   +3 more sources

Modeling and Parameter Sensitivity Analysis of Valve-Controlled Helical Hydraulic Rotary Actuator System

open access: yesChinese Journal of Mechanical Engineering, 2022
As a type of hydraulic rotary actuator, a helical hydraulic rotary actuator exhibits a large angle, high torque, and compact structure; hence, it has been widely used in various fields. However, its core technology is proprietary to several companies and
Kun Zhang   +7 more
doaj   +1 more source

A remaining useful life prediction method based on PSR-former

open access: yesScientific Reports, 2022
The non-linear and non-stationary vibration data generated by rotating machines can be used to analyze various fault conditions for predicting the remaining useful life(RUL).
Huang Zhang   +6 more
doaj   +1 more source

Wall effects on the transportation of a cylindrical particle in power-law fluids [PDF]

open access: yes, 2011
The present work deals with the numerical calculation of the Stokes-type drag undergone by a cylindrical particle perpendicularly to its axis in a power-law fluid.
A. Ambari   +5 more
core   +1 more source

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