The coupled relationship between the attitude control system and other subsystems of three-axis-stabilized satellite was analyzed in this paper

and then attitude control models and subsystem hardware were selected.More accurate analysis model was established to calculate subsystem mass and power

then optimization models of integrated system

attitude control subsystem

power subsystem and structure subsystem based on collaborative optimization(CO) methodology were built. Finally

the programs were compiled with Clanguage for the analysis models and optimization models.The results shows: subsystem model collaborates well with this system model to obtain better system performance.