planetary gearbox research paper

Research on vibration spectral structures of planetary gearboxes based on a universal equation of phenomenological modeling

• Original Paper
• Published: 01 April 2024
• Volume 112 , pages 8129–8151, ( 2024 )

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• Zongyao Liu 1 , 2 ,
• Shixiang Mao 2 ,
• Yong Chang 1 , 2 &
• Haibin Ma 2  

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A variety of factors such as time-varying transfer paths, planet shifts, etc., can induce additional modulation sidebands in the spectrum of planetary gearboxes. Most of previous work only considers the effect of a single factor on the sidebands, while these factors may occur at the same time and the corresponding results are not studied. Moreover, although all of these factors can result in additional sidebands, it is unclear that which the most important factor is, and brings difficulty to the fault diagnosis of planetary gearboxes. Aiming at this issue, a universal equation of phenomenological models of planetary gearboxes is developed in this paper to predict the importance of a certain factor in arising modulation sidebands. This model extends the previous phenomenological models which only contain a single factor of sideband formation and can describe the spectral structures of planetary gearboxes with multiple factors considered simultaneously. Effects of multiple factors including time-varying transfer paths, planet shifts and load sharing ratios on the modulation sidebands are analyzed. Furthermore, arbitrary one, two and multiple factors are introduced in the established phenomenological model to make a comparison between these factors. It is found that when the unequal load sharing among planet gears is not severe, a planet shift can result in abundant frequency components more prominently. Finally, the formation mechanisms of modulation sidebands are derived and some experimental validations are carried out to prove the effectiveness of proposed model.

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Acknowledgements

This research is supported by National Natural Science Foundation of China (No. 52005156), High Level Talent Foundation of Henan University of Technology (No. 2020BS024), Open Project of Henan Key Laboratory of Superhard Abrasives and Grinding Equipment (JDKFJJ2022007), and Youth Backbone Teacher Training Program of Henan University of Technology.

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Henan Key Laboratory of Superhard Abrasives and Grinding Equipment, Henan University of Technology, Zhengzhou, 450001, China

Zongyao Liu & Yong Chang

School of Mechanical and Electrical Engineering, Henan University of Technology, Zhengzhou, 450001, China

Zongyao Liu, Shixiang Mao, Lin Li, Yong Chang & Haibin Ma

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Liu, Z., Mao, S., Li, L. et al. Research on vibration spectral structures of planetary gearboxes based on a universal equation of phenomenological modeling. Nonlinear Dyn 112 , 8129–8151 (2024). https://doi.org/10.1007/s11071-024-09510-1

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Received : 23 October 2023

Accepted : 06 March 2024

Published : 01 April 2024

Issue Date : May 2024

DOI : https://doi.org/10.1007/s11071-024-09510-1

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• Modulation sideband
• Planetary gearbox
• Phenomenological model
• Spectral structure
• Fault diagnosis

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On the potential of high-ratio planetary gearboxes for next-generation robotics

Pablo Lopez Garcia , Anand Varadharajan , Stein Crispel , Marcin Wiklo, Georgios Vasileiou, Dirk Lefeber , Tom Verstraten

• Applied Mechanics
• Faculty of Engineering

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VLAIM3: Innovationmandate Spin-Off: PoweRing: A gearbox for the next generation robots

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On the potential of high-ratio planetary gearboxes for next-generation robotics. / Lopez Garcia, Pablo ; Varadharajan, Anand ; Crispel, Stein ; Wiklo, Marcin; Vasileiou, Georgios ; Lefeber, Dirk ; Verstraten, Tom .

T1 - On the potential of high-ratio planetary gearboxes for next-generation robotics

AU - Lopez Garcia, Pablo

AU - Varadharajan, Anand

AU - Crispel, Stein

AU - Wiklo, Marcin

AU - Vasileiou, Georgios

AU - Lefeber, Dirk

AU - Verstraten, Tom

N2 - On the eve of modern robotic devices leaving their protective safety fences to enter our homes and interact directly with us, the gearboxes used in the actuators that power these devices still face significant challenges. Modern collaborative robots, including cobots, exoskeletons, prostheses, or AGVs, place more demanding weight, efficiency, and affordability requirements on their gearboxes, which Cycloidal and Harmonic Drive technologies have difficulties fulfilling.This situation provides a highly dynamic field for engineering research. In this paper, we assess the potential of high-ratio planetary gearboxes for modern robotic applications, using an assessment framework to identify their main advantages and limitations, which we then analyze in further detail. The resulting insights indicate that compact planetary gearboxes may see a significant come-back in the next generation of robots.

AB - On the eve of modern robotic devices leaving their protective safety fences to enter our homes and interact directly with us, the gearboxes used in the actuators that power these devices still face significant challenges. Modern collaborative robots, including cobots, exoskeletons, prostheses, or AGVs, place more demanding weight, efficiency, and affordability requirements on their gearboxes, which Cycloidal and Harmonic Drive technologies have difficulties fulfilling.This situation provides a highly dynamic field for engineering research. In this paper, we assess the potential of high-ratio planetary gearboxes for modern robotic applications, using an assessment framework to identify their main advantages and limitations, which we then analyze in further detail. The resulting insights indicate that compact planetary gearboxes may see a significant come-back in the next generation of robots.

M3 - Conference paper

BT - AGMA 2022 Fall Technical Meeting

PB - Power Transmission Engineering Magazine

T2 - AGMA: Fall Technical Meet

Y2 - 17 October 2022 through 19 October 2022

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