Research on Disturbance of Flexible Antenna Sheet on Satellite Antenna
YOU Bin-di; ZHAO Zhi-gang; WEI Cheng; ZHAO Yang
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Department of Astronautics, Harbin Institute of Technology, Harbin 150001, China
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History+
Received
Revised
Published
2010-03-24
2010-11-08
2011-07-25
Issue Date
2011-07-25
Abstract
To study disturbance of satellite antenna with flexible antenna surface, the fixed-interface component-mode synthesis method and Lagrange’s equations is used to achieve a lower order dynamic model by modal truncation. Under the large motions, the rigid-flexible coupling dynamics model of flexible satellite antenna is deduced through compatibility relations at the interface between axis end and antenna surface, and compensate for the neglect of elastic deformation. So the model should increase the computing efficiency without losing much accuracy. Then, satellite antenna dynamics is analyzed considering the antenna surface as rigid and flexible body separately. The result shows that the flexible antenna surface has little effect on satellite base attitude and antenna pointing at initial stage, but the shock may excite to aggravation its own elastic vibration with the joint continuing torques. Further, it can make the system vibrated and deviations of satellite base attitude and antenna pointing become larger. At the result, the satellite antenna pointing accuracy is seriously affected. The above conclusion has important theoretical value and practical significance engineering for the satellite antenna pointing accuracy of the analysis and control.
YOU Bin-di;ZHAO Zhi-gang; WEI Cheng; ZHAO Yang.
Research on Disturbance of Flexible Antenna Sheet on Satellite Antenna[J]. Journal of Vibration and Shock, 2011, 30(7): 107-111,
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