Results 11 to 20 of about 403,042 (280)
Planetary Gears Feature Extraction and Fault Diagnosis Method Based on VMD and CNN [PDF]
Sensors, 2018 Given local weak feature information, a novel feature extraction and fault diagnosis method for planetary gears based on variational mode decomposition (VMD), singular value decomposition (SVD), and convolutional neural network (CNN) is proposed. VMD was
Chang Liu +3 more
doaj +3 more sources
Energies, 2018 Multi-clearance is the main cause for the performance and reliability decline of complicated mechanical systems. The increased clearance could induce contacts and impacts in joints, and consequently affect control accuracy.
Jizhuang Fan, Huibo Zhang
exaly +4 more sources
Applied Sciences (Switzerland), 2020 In the presence of manufacturing errors, the dynamic properties of herringbone planetary gear train (HPGT) can be altered from the originally designed properties to have undesired behavior.
Guiqin Shi
exaly +2 more sources
Development of a high-speed planetary gearbox for an electric vehicle [PDF]
Scientific ReportsA methodology has been developed for creating a fundamentally new high-speed planetary gearbox for an electric vehicle drive with double-crown planetary gears mounted in central bearing supports mounted on the periphery of a three-lobed flange integral ...
Mykhaylo Zagirnyak +6 more
doaj +2 more sources
Shock and Vibration, 2017 The dynamic investigation of helical planetary gears plays an important role in structure design as the vibration and noise are perceived negatively to the transmission quality.
Lina Zhang +3 more
doaj +2 more sources
Vibration Behavior of the Planetary Gear System by Considering the Fixed Output [PDF]
International Journal of Advanced Design and Manufacturing Technology, 2023 This work studies on analytical model of the single–stage spur planetary gear in form of lumped–parameter model. It includes key nonlinear factors of planetary gear vibration such as mesh stiffness and backlash of meshing gears. The planetary gear set is
Ali Shahabi, Amir Hossein Kazemian
doaj +1 more source
Study of the Vibration Characteristics of SA 330 Helicopter Planetary Main Gearbox [PDF]
Journal of Applied and Computational Mechanics, 2023 The planetary gear sets find application in the final stages of the helicopter transmission system. Unlike the single axis gear, the planetary gears have complex structural arrangement and unique operational characteristics which makes diagnosis of ...
Adebayo A. Ogundare +5 more
doaj +1 more source
Lubricants, 2023 To increase the power density of the electromechanical drive train of wind turbines, journal bearings can be used as planetary gear bearings instead of rolling bearings. This technological change presents new challenges.
Benjamin Lehmann +3 more
semanticscholar +1 more source
International Journal of Aerospace Engineering, 2021 The complex three-shaft three-reducer structural designs of helicopter transmission systems are prone to changes in the relative positions of shafting under the conditions of main rotor and tail rotor loads.
Li Xuejun +4 more
doaj +1 more source
Impact of the number of planetary gears on the energy efficiency of electrified powertrains
Applied Energy, 2022 Planetary gears (PGs) play a critical role in hybrid electric vehicles (HEVs) by combining the output torques of different powertrain components and delivering the resulting torque to the wheels.
Daizy Rajput +5 more
semanticscholar +1 more source