Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10680780 | Acta Astronautica | 2014 | 14 Pages |
Abstract
Underactuated attitude control is supposed to be used on spacecraft when failure happens with onboard actuators. One main problem with existing underactuated attitude control designs is their limited capabilities against disturbances. In order to solve this problem, an approach based on the theory of Hâ is proposed in this paper. Two propositions are derived from the Hâ theory to improve the robustness of one popular underactuated attitude control design, which was presented by Tsiotras et al. It is proved mathematically that the controller satisfying these two propositions respectively can stabilize the underactuated attitude system locally or globally. The numerical simulations show that the improved controllers based on the Hâ theory could provide higher pointing accuracy for small satellites against disturbances. This validates the effectiveness of the proposed Hâ based approach to improve existing underactuated attitude control designs.
Related Topics
Physical Sciences and Engineering
Engineering
Aerospace Engineering
Authors
Congying Han, Jian Guo, Alexandre Pechev,