Adaptive control for the attitude maneuver of flexible spacecraft under disturbance sources = 외란하에서 적응제어기를 이용한 유연 우주비행체 자세제어

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Precision attitude control of flexible space structure by adaptive real-time control is addressed in this paper. A ground experimental model is developed for verification of the stabilization strategy using an adaptive control technique. The experimental set up simulates planar motion of flexible space structure as a coupled hybrid dynamics of rigid body pitching motion and flexible vibration. The adaptive notch filter and adaptive controller with the neural network, which updates filter and controller parameters continuously from the sensor measurement, are implemented in the real-time framework for the attitude control. For the control of high frequency structural modes or external disturbances, a high authority control (HAC), by the least mean squares (LMS) algorithm in conjunction with the adaptive notch filter, is applied to the flexible spacecraft model. The principal purpose of this study is, therefore, to apply the adaptive control algorithm to investigate feasibility of practical implementation. By the experimental study, it was shown that the adaptive controller successfully stabilizes the uncertain and it accurately controls the attitude of flexible space structure.
Advisors
Bang, Hyo-Choongresearcher방효충researcher
Description
한국과학기술원 : 항공우주공학전공,
Publisher
한국과학기술원
Issue Date
2007
Identifier
268756/325007  / 020035179
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 항공우주공학전공, 2007. 8, [ viii, 107 p. ]

Keywords

Spacecraft; Flexible structure; Launch vehicle; Adaptive notch filter; Neural network; Adaptive predictive controller; 인공위성,유연구조물,발사체; 적응노치필터,신경망,예측제어기; Spacecraft; Flexible structure; Launch vehicle; Adaptive notch filter; Neural network; Adaptive predictive controller; 인공위성,유연구조물,발사체; 적응노치필터,신경망,예측제어기

URI
http://hdl.handle.net/10203/26353
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=268756&flag=dissertation
Appears in Collection
AE-Theses_Ph.D.(박사논문)
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