Results 11 to 20 of about 83,680 (310)

A new hybrid model of sparsity empirical wavelet transform and adaptive dynamic least squares support vector machine for fault diagnosis of gear pump

open access: yesAdvances in Mechanical Engineering, 2020
Gear pump is the key component in hydraulic drive system, and it is very significant to fault diagnosis for gear pump. The combination of sparsity empirical wavelet transform and adaptive dynamic least squares support vector machine is proposed for fault
Yan Lu, Zhiping Huang
doaj   +2 more sources

Numerical Investigation on Pairing Solutions of Non-Positive Displacement Pumps and Internal Gear Pump for High-Speed Design

open access: yesFluids, 2023
Raising the working speed of hydraulic pumps to maximize the efficient matching range of electric motors is one of the possible ways to achieve energy efficiency in electric machinery.
Fei Sun   +3 more
doaj   +1 more source

The Influence of Radial and Axial Gaps on Volumetric Efficiency of External Gear Pumps

open access: yesEnergies, 2021
The design of gear pumps and motors is focused on more efficient units which are possible to achieve using advanced numerical simulation techniques. The flow that appears inside the gear pump is very complex, despite the simple design of the pump itself.
Paulina Szwemin, Wieslaw Fiebig
doaj   +1 more source

Molecular mechanics and molecular dynamics analysis of Drexler-Merkle gears and neon pump [PDF]

open access: yes, 1998
Over the past two years at the Materials and Process Simulation Center, we have been developing simulation approaches for studying the molecular nanomachine designs pioneered by Drexler and Merkle.
Gao, G.   +3 more
core   +1 more source

Experimental investigation of the performance and energy consumption efficiency of elliptical gear hydraulic pump and evaluation by Taguchi method

open access: yesEngineering Science and Technology, an International Journal
This study presents an approach based on the Taguchi method to evaluate the energy consumption performance of spur and elliptical gear hydraulic pumps. Output flow is one of the essential indicators of gear pump performance.
Mithat Yanikören
doaj   +1 more source

Study on Mechanism and Suppression Method of Flow-Induced Noise in High-Speed Gear Pump

open access: yesArchives of Acoustics, 2023
The flow-induced noise mechanism of a 5000 rpm high-speed gear pump is explored. On the basis of the CFD technology and the Lighthill acoustic analogy theory, a numerical model of the flow-induced noise of a high-speed gear pump is constructed, and the ...
Peng ZHAN   +4 more
doaj   +1 more source

Two-Stage Multi-Channel Fault Detection and Remaining Useful Life Prediction Model of Internal Gear Pumps Based on Robust-ResNet

open access: yesSensors, 2023
The internal gear pump is simple in structure, small in size and light in weight. It is an important basic component that supports the development of hydraulic system with low noise.
Jianbo Zheng, Jian Liao, Yaqin Zhu
doaj   +1 more source

Fully 3D‐Printed Wave‐Wound Electromagnetic Motors

open access: yesAdvanced Materials Technologies, EarlyView.
This work presents the first fully 3D‐printed wave‐wound electromagnetic motors, which are created using conductive nanoparticle inks, carbon‐filled nylon polymers, and surface mount components. These motors can achieve a stall torque of 7.62N·mmA−1$7.62 \nobreakspace N{\cdot }mm A^{-1}$ and efficiency of 28.2 %, which approaches the performance of ...
Joseph Schwalbe   +4 more
wiley   +1 more source

Soft Robotic Snake with Tunable Undulatory Gait for Efficient Underwater Locomotion

open access: yesAdvanced Robotics Research, EarlyView.
This study designs an underwater soft snake robot using 3D‐printed soft actuators, controlled by specific signals to generate sinusoidal undulation. Results show a positive correlation between speed and swing amplitude, with optimal performance at 2/3π phase offset, PLA tail, 1.2 voltage growth rate, and 6s undulation period achieving a maximum speed ...
Huichen Ma, Junjie Zhou, Raye Yeow
wiley   +1 more source

Justification of the structure and principle of operation of the stopper for the speed control unit of the gear differential [PDF]

open access: yes, 2018
Обґрунтована будова і принцип роботи зупинника ланки керування швидкістю зубчастого диференціала, який складається з шестеренчастого гідронасоса, трубопроводів, регулювального крана, зворотного крана і ємності для рідини.
Малащенко, Володимир Олександрович   +2 more
core  

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