Mechanics & Industry
Volume 22, 2021
|Number of page(s)||21|
|Published online||08 March 2021|
Effects of molecule force on free vibration for a micro electromagnetic harmonic drive system
Yanshan University, Mechanical engineering institute, Qinhuangdao 066004, PR China
2 Hengshui University, Electromechanic research institute, Hengshui 053000, PR China
* e-mail: firstname.lastname@example.org
Accepted: 30 January 2021
In this paper, a micro electromagnetic harmonic drive system is proposed. Considering Van der Waals force, dynamics equation of the flexible ring for the micro drive system is deduced and resolved. Using the equations, the effects of the molecule force on the natural frequencies and vibration modes of the drive system are investigated. Results show that considering molecule force, natural frequencies of the flexible ring are reduced and its vibration modes are changed. For lower order modes, smaller clearance between the flexible ring and stator, smaller thickness of the flexible ring and larger radius of the flexible ring, the effects of the molecule force on the natural frequencies and vibration modes are more obvious.
Key words: Electromagnetic harmonic drive system / micro drive / Van der Waals force / free vibration / natural frequency / vibration modes
© D. Zhao et al., Hosted by EDP Sciences 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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