Anti-unwinding Twistor-based Finite-time Control for Flying Around a Non-cooperative Target.

An integrated attitude and orbit finite-time control based on anti-unwinding twistor representation for flying-around with non-cooperative target is proposed in this paper. Firstly, an integrated attitude and orbit model based on traditional twistor representation is established for non-cooperative flying-around problem with complex initial situation. Secondly, an anti-unwinding representation is proposed to avoid the unwinding phenomenon. Thirdly, a finite-time controller in the framework of the anti-unwinding twistor representation is designed to guarantee the spacecraft to reach the desired state quickly. Finally, the effectiveness of the proposed method is verified by numerical simulations. [ABSTRACT FROM AUTHOR]