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
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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
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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
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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
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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
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A Study on the Load Sharing among Planet Gears according to the Phase of Carrier Pinhole Position Error in the Planetary Gearbox [PDF]
한국정밀공학회지, 2017 The planetary geartrain can be reduced in size and weight, and has excellent durability since the input torque is divided by the number of planet gears when the power is transmitted. In order to improve its durability, the load sharing among planet gears
Jeong Gil Kim +4 more
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Analysis of Time–Varying Mesh Stiffness for the Planetary Gear System with Analytical and Finite Element Methods [PDF]
International Journal of Advanced Design and Manufacturing Technology, 2022 In dynamic model of planetary gears, one of the key design parameters and one of the main sources of vibration is time–varying mesh stiffness of meshing gears.
Ali Shahabi, Amir Hosein Kazemian
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Dynamic modeling and analysis of high-speed flexible planetary gear transmission systems
Alexandria Engineering Journal, 2023 Modern planetary gear transmissions are often made with flexible components and operated at high or varying speed. Despite advances in understanding their dynamic performance, they remain vulnerable to problems leading—in some cases—to subsequent system ...
Changzhao Liu +4 more
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Optimization of planetary gear of onboard gearbox using the method of differential evolution [PDF]
Avtomobilʹnyj Transport (Harʹkov), 2020 Problem. Further modernization of combat vehicles, associated with the installation of additional equipment, requires the use of more powerful engines, which leads to increased loads on parts and components of the onboard gearbox.
Klitnoy Viktor +2 more
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DESIGN FOR A BI-PLANETARY GEAR TRAIN [PDF]
Scientific Journal of Silesian University of Technology. Series Transport, 2016 The article presents the design for a bi-planetary gear train. The project description is supplemented with calculations of kinematics, statics and meshing efficiency of the gear wheels included in the gear train.
Józef DREWNIAK +2 more
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