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Mathematical Problems in Engineering
Volume 2013 (2013), Article ID 574072, 14 pages
http://dx.doi.org/10.1155/2013/574072
Research Article

Vibration Isolation Platform with Multiple Tuned Mass Dampers for Reaction Wheel on Satellites

School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China

Received 18 March 2013; Revised 30 May 2013; Accepted 3 June 2013

Academic Editor: Rongni Yang

Copyright © 2013 Yao Zhang 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

Vibration isolation is a direct and effective approach to improve the ultraprecise pointing capability of an imaging satellite. To have a good trade-off between the resonance amplitude and the high frequency attenuation for the original vibration isolation platform, a novel vibration isolation system for reaction wheel (RW), including a multistrut vibration isolation platform and multiple tuned mass dampers, is proposed. The first step constructs the integrated satellite dynamic model including the RWs and the vibration isolation systems, while the static and dynamic imbalances of the rotor and base movements are considered in the modeling process. The transmissibility matrix of the vibration isolation system is then obtained, and its frequency domain characteristics are described. The third part presents the application of the vibration isolation system for RWs. The effective attenuation of RW disturbances by the new vibration isolation system is illustrated, and its safety performance is also verified. Finally, using the reasonable parameters of the vibration isolation system, its performance on the satellite is testified by numerical simulations. The study shows that the novel vibration isolation system presented cannot only be successfully applied to a satellite but also improve the attitude stability.