Study on Nonlinear Dynamic Characteristics of RV Reducer Transmission System

Zhenhua Han (), Hao Wang, Rirong Li, Wentao Shan, Yunda Zhao, Huachao Xu, Qifeng Tan, Chang Liu and Youwu Du
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Zhenhua Han: School of Mechanical Engineering, Jiangsu University of Technology, Changzhou 213001, China
Hao Wang: School of Mechanical Engineering, Jiangsu University of Technology, Changzhou 213001, China
Rirong Li: School of Mechanical Engineering, Jiangsu University of Technology, Changzhou 213001, China
Wentao Shan: School of Mechanical Engineering, Jiangsu University of Technology, Changzhou 213001, China
Yunda Zhao: School of Mechanical Engineering, Jiangsu University of Technology, Changzhou 213001, China
Huachao Xu: Intelligent Manufacturing and Automobile School, Chongqing College of Electronic Engineering, Chongqing 401331, China
Qifeng Tan: School of Mechanical Engineering, Jiangsu University of Technology, Changzhou 213001, China
Chang Liu: School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
Youwu Du: School of Mechanical Engineering, Jiangsu University of Technology, Changzhou 213001, China

Energies, 2024, vol. 17, issue 5, 1-25

Abstract: Rotate vector (RV) reducers have widely been used in high-performance precision drives for industrial robots. However, the current nonlinear dynamic studies on RV reducers are not extensive and require a deeper focus. To bridge this gap, a translational–torsional nonlinear dynamic model for an RV reducer transmission system is proposed. The gear backlash, time-varying mesh stiffness, and comprehensive meshing errors are taken into account in the model. The dimensionless vibration differential equations of the system were derived and solved numerically. By means of bifurcation diagrams, phase trajectories, Poincaré sections, and the power spectrum, the motion state of the system was studied with the bifurcation parameters’ variation, including excitation frequency and meshing damping. The results demonstrate that this system presents enriched nonlinear dynamic characteristics under different parameter combinations. The motion state of the system is more susceptible to change at lower frequencies. Increasing the meshing damping coefficient proves effective in suppressing the occurrence of chaos and reducing vibration amplitudes, significantly enhancing the stability of the transmission system.

Keywords: RV reducer; gear backlash; nonlinear dynamic; bifurcation; chaos (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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