Abstract With the development of antenna technology, membrane antenna has become a research hotspot in aerospace field due to its advantages of light weight, low cost and easy folding. Nevertheless, greater difficulties have been brought to dynamic modeling and identification of the satellite with membrane antenna since its structure is remarkably flexible and complex. In view of the above problems, in this paper, dynamic modeling and on-orbit parameter identification are investigated for satellite systems with large-scale membrane antennas. Firstly, translation, rotation and vibration dynamic equations of the satellite system are developed using the coupling coefficient method. Afterwards observer/Kalman filter identification (OKID) and eigensystem realization algorithms (ERA) are applied to identify the modal parameters of the system. Finally, the validity of proposed methods are verified by numerical simulations. Simulation results indicate that the dynamic model established by this paper coincides well with the software ADAMS when comparing dynamic responses of the satellite, and also reveal that both OKID and ERA can effectively identify natural frequencies and modes of the system.
Dynamic modeling and modal parameters identification of satellite with large-scale membrane antenna
Advances in Space Research ; 63 , 12 ; 4046-4057
2019-03-09
12 pages
Article (Journal)
Electronic Resource
English
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