Hybrid thrusters and reaction wheels strategy for large angle rapid reorientation with high precision |
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Institution: | 1. Instituto Politécnico Nacional–CITEDI, Av. Instituto Politécnico Nacional 1310, Col. Nueva Tijuana, Tijuana, Baja California 22435, México;2. Tecnológico Nacional de México/Instituto Tecnológico de La Laguna, Blvd. Revolución and Cuauhtémoc SN, Torreón 27000, México |
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Abstract: | The quaternion-based, high precision, large angle rapid reorientation of rigid spacecraft is the main problem investigated in this study. The operation is accomplished via a hybrid thrusters and reaction wheels strategy where thrusters are engaged in providing a primary maneuver torque in open loop, while reaction wheels provide fine control torque to achieve high precision in closed-loop control. The inaccuracy of thrusters is handled by a variable structure control (VSC). In addition, a signum function is mixed in the switching surface in VSC to produce a maneuver to the reference attitude trajectory in a shortest distance. Detailed proofs and numerical simulation examples are presented to illustrate all the technical aspects of this work. |
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