Forced fly-around of spacecraft is the basis for tracking and capturing space tumbling target in active debris removal mission. In this paper, the relative kinematic equation between chaser and target is first obtained with the help of classical differential geometry principle. Then, taking the attitude dynamic model of tumbling target into consideration, the finite time convergence sliding model control (FTCSMC) is designed to enable the forced fly-around in the line of sight rotation coordinate system. Finally, the effectiveness and robustness of the control strategy are verified in two typical cases by numerical simulation.
This paper deals with 9 species of the genus Kuzicus from China and supplies information on examined specimens, in which one new species Kuzicus (Kuzicus) bicurvus Cui & Shi sp. nov. is described and illustrated as well as characteristic photographs of five known species from China are provided.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.