Radial Type Satellite Attitude Controller Design using LMI Method and Robustness Analysis

Title & Authors
Radial Type Satellite Attitude Controller Design using LMI Method and Robustness Analysis
Rhee, Seung-Wu;

Abstract
The $\small{H_{\infty}}$ control theory using LMI method is applied to design an attitude controller of radial type satellite that has strongly coupled channels due to the large product of inertia. It is observed that the cross-over frequency of open-loop with $\small{H_{\infty}}$ controller is lower than that of open-loop without controller, which is not typical phenomenon in an optimal control design result: it is interpreted that due to a large product of inertia, there is certain limit in increasing agility of satellite by just tuning weighting function. $\small{{\mu}}$-analysis is performed to verify the stability and performance robustness with the assumption of +/-5% MOI variation. $\small{{\mu}}$-analysis result shows that the variation of principal MOI degrades the stability and performance robustness more than the variation of POI does.
Keywords
Radial Type Satellite;$\small{H_{\infty}}$ Controller;$\small{{\mu}}$-Analysis;LMI;Robust Stability;Robust Performance;Spacecraft Attitude Control;
Language
Korean
Cited by
1.
인공위성 자세제어를 위한 H-infinity 제어기 설계 알고리즘 비교 연구,이승우;

한국항공우주학회지, 2016. vol.44. 1, pp.57-69
1.
Comparison Study of H-infinity Controller Design Algorithms for Spacecraft Attitude Control, Journal of the Korean Society for Aeronautical & Space Sciences, 2016, 44, 1, 57
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