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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/88050

    Title: 使用B-dot控制法獲取非太陽同步軌道衛星初始姿態
    Other Titles: Initial attitude acquisition of non-sunsynchronous satellite using B-dot control
    Authors: 壽岳弘;Shou, Yueh-Hung
    Contributors: 淡江大學航空太空工程學系碩士班
    蕭富元;Hsiao, Fu-Yuen
    Keywords: B-dot控制法;初始姿態獲取;福衛七號;非太陽同步軌道;Matlab/ Simulink;B-dot control;Initial attitude acquisition;FORMOSAT-7;non-sun synchronous orbit;Matlab/Simulink
    Date: 2013
    Abstract: 本論文主要探討利用B-dot 控制法做非太陽同步軌道衛星在分離階段的控制。在
    器。在本論文中所使用的B-dot 控制演算法為現有大多低軌道衛星(Low Earth
    Orbit,LEO) 安全模式中(Safe-Mode) 都會採用的方法。研究中發現出這個控制演
    Matlab/Simulink 來建立一個衛星的動態模型,顯示出衛星的初始軌道,再建立
    出重力場和磁場模型,完成整個模擬需要的系統。再利用太空中心(NSPO) 所提
    This thesis studies initial acquisition of a non-sunsynchronous satellite using B-dot
    control. Right after separating from the launcher, a satellite usually tumbles very
    fast so that solar senors or the star tracker cannot function well. However, due to
    the constraint of battery power, only simple control laws can be used in acquiring
    the satellites’ attitude. In most space missions, the B-dot control collaborated with a
    bias momentum is widely applied in the initial acquisition mission, due to its natural
    characteristics of alignment with the orbit normal after de-tumbling. However, the
    technology is a confidential one and few literatures are available.
    In this thesis, we intend to develop a control law that helps the FormoSat 7,
    a non-sunsynchronous micro satellite, to acquire its initial attitude. At beginning
    the Matlab/Simulink is employed to construct a satellite simulator, including orbit
    simulator, satellite dynamics simulator, time management simulator, environment disturbance simulator and control law simulator. Simulation results from the developed
    simulator has been verified with NSPO’s FormoSat-2 data. We also developed
    an algorithm that can de-tumble a satellite and acquire its initial attitude using the
    B-dot control collaborating with bia momentum. Numerical simulations are provided
    to demonstrate the feasibility of this research. The results from this thesis potentially
    contributes to the development of the FormoSat 7.
    Appears in Collections:[航空太空工程學系暨研究所] 學位論文

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