We address the problem of designing fuel/time-optimal controllers for spacecraft undergoing rest-to-rest maneuvers. A modification of the Switch Tune Optimization (STO) algorithm is used to determine the switch times and maneuver tone of the bang-off-bang control profile. The proposed algorithm is tested on an inertially symmetric spacecraft. As the weight on the fuel, alpha, is increased from zero, the number of switches in the control profiles vary from 5 to 10 to 9. After a specific value of alpha, it the eigenaxis control with two switches is the optimum. (Author)
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Liu et al. (1997) studied this question.
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