반작용 휠을 사용하는 인공위성의 내고장 자세제어기법

This paper considers a fault tolerant control problem for a spacecraft using reaction wheels. Faults are assumed to be inherent to only actuators(reaction wheels) and a control algorithm to accommodate actuators′ faults is proposed. An attitude control loop includes an angular velocity control loop. The time delay control method is used to make a spacecraft follow the command angular velocity and to accommodate actuators′ faults. A stability condition for the proposed algorithm is derived and the performance is demonstrated by computer simulations.