4032 Singular Inputs for Minimum Time Maneuver of a Satellite with Control Moment Gyro
Details
Control moment gyro (CMG) generates higher torque than common reaction wheel. Thus it is focused on mounting CMGs on future satellites for agile maneuver of attitude. This paper discusses on the minimum time maneuver. The authors have been studying on optimal maneuver of satellites actuated by CMGs as application of optimal control theory. According to optimal control theory, bang-bang control is optimal in most cases. Intermediate input is call as singular input. The author pointed out that singular inputs are necessary for minimum time maneuver in some cases. This paper discussed on the optimum maneuver of a malfunctioned satellite. The results show that singular input is used in optimal maneuvers when one gimbal of CMGs does not work.
