| Title |
Dynamic modelling and natural characteristic analysis of cycloid ball transmission using lumped stiffness method
|
|---|---|
| Published in |
Robotics and Biomimetics, December 2017
|
| DOI | 10.1186/s40638-017-0080-4 |
| Pubmed ID | |
| Authors |
Peng Zhang, Bingbing Bao, Meng Wang |
| Abstract |
The vibration of robot joint reducer is the main factor that causes vibration or motion error of robot system. To improve the dynamic precision of robot system, the cycloid ball transmission used in robot joint is selected as study object in this paper. An efficient dynamic modelling method is presented-lumped stiffness method. Based on lumped stiffness method, a translational-torsional coupling dynamics model of cycloid ball transmission system is established. Mesh stiffness variation excitation, damping of system are all intrinsically considered in the model. The dynamic equation of system is derived by means of relative displacement relationship among different components. Then, the natural frequencies and vibration modes of the derivative system are presented by solving the associated eigenvalue problem. Finally, the influence of the main structural parameters on the natural frequency of the system is analysed. The present research can provide a new idea for dynamic analysis of robot joint reducer and provide a more simplify dynamic modelling method for robot system with joint reducer. |
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