Robust guidance and control of lunar lander using model reference approach

Details Robust guidance and control of lunar lander using model reference approach Robust guidance and control of lunar lander using model reference approach

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5985..856l&link_type=abstract

International Conference on Space Information Technology. Edited by Wang, Cheng; Zhong, Shan; Hu, Xiulin. Proceedings of the S

Physics

Scientific paper

This paper deals with the soft landing of a lunar lander by the model reference. At first, according to the experimental result and human experience, we give an optimal trajectory for the lunar lander, from the perilune to the lunar surface, such that the lander has the least fuel consumption and the best security. Then, linearizing the optimal trajectory and the dynamical description of the lunar lander at some characteristic spots, we obtain two switched linear systems. Using the model reference approach, we design a switched state-feedback controller for the lunar lander such that tracking the optimal trajectory. But, for the derivation from the linearization, there exists a steady-state error between the optimal trajectory and the lunar lander. However, we choose suitable gain matrices to decrease the error as may as possible.

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