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Shock and Vibration
Volume 2017 (2017), Article ID 4840514, 17 pages
https://doi.org/10.1155/2017/4840514
Research Article

Modeling and Analysis of a Multi-Degree-of-Freedom Micro-Vibration Simulator

1Innovation Lab of Space Robot System, Space Robotics Engineering Center, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, No. 3888 Dong Nanhu Road, Changchun 130033, China
2University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China

Correspondence should be addressed to Zhenbang Xu

Received 15 March 2017; Accepted 30 May 2017; Published 2 August 2017

Academic Editor: Naveed Ahmad

Copyright © 2017 Xiaoming Wang et al. 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

To reproduce the disturbance forces and moments generated by the reaction/momentum wheel assembly, a multi-degree-of-freedom micro-vibration simulator is proposed. This can be used in the ground vibration experiments of an optical payload replacing the real action/momentum wheel assembly. First, the detailed structure of the micro-vibration simulator is introduced. Then, the complete system kinematic and dynamic models of the micro-vibration simulator are derived. In addition, the disturbance forces and moments produced by the micro-vibration simulator are calculated. Finally, the normal mode analysis and a cosimulation are adopted to verify the validity of this method. The analysis and simulation results show that the micro-vibration simulator can exactly reproduce the disturbance forces and moments with different amplitudes and different frequency ranges.