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Deploying process modeling and attitude control of a satellite with a large deployable antenna

Chinese Journal of Aeronautics 2014年第2期27卷 299-312页

作者： Zhigang Xing Gangtie Zheng School of Aerospace Tsinghua University

Modeling and attitude control methods for a satellite with a large deployable antenna are studied in the present paper. Firstly, for reducing the model dimension, three dynamic models for the deploying process are developed, which are built with the methods of multi-rigid-body dynam- ics, hybrid coordinate and substructure. Then an attitude control method suitable for the deploying process is proposed, which can keep stability under any dynamical parameter variation. Subse- quently, this attitude control is optimized to minimize attitude disturbance during the deploying process. The simulation results show that this attitude control method can keep stability and main- tain proper attitude variation during the deploying process, which indicates that this attitude con- trol method is suitable for practical applications.

关键词： Attitude control Communication satellite Deploying process modeling Disturbance rejection large deployable antenna

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Design,Simulation and Failure Influence of Tape Spring Hinges in a large deployable antenna

Design,Simulation and Failure Influence of Tape Spring Hinge...

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作者： Pengpeng Wang Shikun Zheng Feng Wang Xi’an Institute of Space Radio Technology

The design,simulation and failure influence of tape spring hinges in a large deployable antenna is *** sensitivity analysis between modal frequencies of the large deployable antenna and stiffness coefficients of the tape spring hinge,it is found that compression stiffness along longitudinal axis and bending stiffness about transverse axis are the key points of tape spring *** coefficients,buckling loads and bending moments of the tape spring hinge are obtained by mechanical *** in orbit disturbance analysis,disturbance loads applied on the tape spring hinge result from satellite attitude control and scanning mechanism operation are ***,failure influences of the tape spring hinges on both antenna modal frequencies and pointing accuracy are studied.

关键词： Tape spring hinge large deployable antenna Pointing accuracy

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