Abstract: This paper investigates the robust control of large angle maneuver for the multi-body spacecraft with model uncertainties．A nonlinear dynamics model with uncertainties is considered．An approximate pseudo-linear system is developed by using the inverse system method，and two linear robust controllers are designed through the mixed sensitivity H_∞ optimization and the p synthesis method，respectively．A PD controller is used to eliminate the singularity during the mixed sensitivity H_∞ optimization．Numerical examples of the central body and antenna tracking different targets are given．The simulation results demonstrate that both controllers are robust stable，and the robust performance of the μ controller is better than that of the H_∞  controller．

Key words: font-family:Calibri, sans-serif, multi-body spacecraft">multi-body spacecraftfont-family:宋体, ')">">, font-family:Calibri, sans-serif, H_{">Hfont-family:Arial, sans-serif,} ∞ ')">">∞ , font-family:Calibri, sans-serif, control">controlfont-family:宋体, ')">">, font-family:Calibri, sans-serif, μ ">μ font-family:Calibri, sans-serif, synthesis">synthesisfont-family:宋体, ')">">, font-family:Calibri, sans-serif, large angle maneuver">large angle maneuver')">">