화학공학소재연구정보센터
International Journal of Control, Vol.86, No.11, 2104-2113, 2013
Terminal spacecraft rendezvous and capture with LASSO model predictive control
The recently investigated (asso) model predictive control (MPC) is applied to the terminal phase of a spacecraft rendezvous and capture mission. The interaction between the cost function and the treatment of minimum impulse bit is also investigated. The propellant consumption with (asso) MPC for the considered scenario is noticeably less than with a conventional quadratic cost and control actions are sparser in time. Propellant consumption and sparsity are competitive with those achieved using a zone-based (1) cost function, whilst requiring fewer decision variables in the optimisation problem than the latter. The (asso) MPC is demonstrated to meet tighter specifications on control precision and also avoids the risk of undesirable behaviours often associated with pure (1) stage costs.