Robust control of spacecraft with mobile appendages

This paper studies the control problem of spacecraft with mobile appendages . In such a system, the motions of a spacecraft's main body and the appenda ges act as disturbances to each other through nonlinear dynamic coupling. T o this problem we apply the robust gain-scheduled control. From the viewpoi nts of synthesis and implementation, three types of approaches, i.e., simul taneous, sequential, and local design are proposed. Their capabilities are investigated through some numerical studies and compared with one another.