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Shock and Vibration - Volume 2015 2015, Article ID 572937, 17 pages -

Research Article

School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China

Key Laboratory of Advanced Forging & Stamping Technology and Science, Yanshan University, Ministry of Education of China, Qinhuangdao 066004, China

Hebei Provincial Key Laboratory of Parallel Robot and Mechatronic System, Yanshan University, Qinhuangdao 066004, China

Received 22 March 2015; Revised 18 June 2015; Accepted 28 June 2015

Academic Editor: Laurent Mevel

Copyright © 2015 Xiu-hong Hao and Xue-jun Zhu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Considering the magnetic fields modulating in the electromechanical integrated magnetic gear EIMG, the electromagnetic coupling stiffnesses vary periodically and the expressions are given by the finite element method. The parametric vibration model and the dynamic differential equations are founded. The expressions of forced responses of EIMG system are deduced when the main resonances and the combination resonances occur. And then, the time and frequency responses are figured out. The dynamic characteristics of EIMG system are discussed. The results show that the dominant frequencies in the resonances are always the natural frequency of EIMG system. The relative amplitudes of the components have great difference and the components amplitudes of the main resonances are much bigger than the components amplitudes of the combination resonances. The time-varying meshing stiffness wave between the inner stator and the inner ferromagnetic pole-pieces has little influence on EIMG system.





Autor: Xiu-hong Hao and Xue-jun Zhu

Fuente: https://www.hindawi.com/



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