| 研究生: |
孫煜明 Suen, Yu-Ming |
|---|---|
| 論文名稱: |
微微衛星姿態控制次系統之設計與模擬 Design and Simulation of a Picosatellite Attitude Control Subsystem |
| 指導教授: |
莊智清
Juang, Jyh-Ching |
| 學位類別: |
碩士 Master |
| 系所名稱: |
電機資訊學院 - 電機工程學系 Department of Electrical Engineering |
| 論文出版年: | 2003 |
| 畢業學年度: | 91 |
| 語文別: | 中文 |
| 論文頁數: | 70 |
| 中文關鍵詞: | 姿態控制 、三軸穩定 |
| 外文關鍵詞: | Attitude Control, 3-Axis Stabilization |
| 相關次數: | 點閱:78 下載:24 |
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PACE衛星是國內第一顆實現三軸穩定的微微衛星。在本論文中,主要是針對PACE衛星的姿態控制次系統來進行設計與模擬,根據設計的目標為軌道高度600公里,傾斜角98度,5度以內的地球指向精度,選擇採用動斜偏斜控制系統為姿態控制次系統的主要架構,在Y軸安裝一個動量飛輪,控制衛星俯仰的角度,並且提供X軸與Z軸的穩定,另外再搭配三個軸上的磁力線圈,消除章動與進動的現象,增加指向精度,以及對動量飛輪做動量卸除的功能,使動量飛輪不會到達飽和的狀態。設計的方法為先針對衛星的軌道做模擬,估算出環境干擾力矩的數值,然後計算控制器的參數,最後才對整個控制次系統進行模擬,並對模擬的結果來做分析。
PACE satellite is the first indigenous Picosat that attempts to achieve 3-axis stabilization. In this thesis, the design and simulation of the attitude control subsystem of the PACE satellite are presented. The requirement is to achieve 5 degree earth pointing accuracy at 600 km altitude, 98 degree inclination orbit. A momentum-biased control system is employed to control the pitch angle and stabilize the roll/yaw dynamics. In addition, three orthogonal magnetic coils are used to damp the angular rate after separation, eliminate nutation and precession phenomena, and prevent the momentum wheel from saturation. Through analysis and simulation, it is shown that a 5° attitude control requirement can be achieved.
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