Hybrid actuator optimal angular momentum management with analytical solution for spacecraft attitude agile maneuvering mission

Hybrid actuator consisting of Control Moment Gyro (CMG) and Reaction Wheel (RW) possesses both the advantages of providing control using CMGs and offering high-precision control employing RWs, making it an alternative attitude control actuator for complex space missions, such as agile attitude maneuvering and tracking. In the implementing of the hybrid actuator, singularities of the CMGs and the saturation of the RWs are two key issues. To handle these two problems achieving CMG singularities avoidance and RW desaturation simultaneously, an angular momentum optimal management solution based on Cooperative Transferable Utility (TU) Game theory is proposed. The cooperative transferable utility game model is constructed according to quadratic programming, and the maximum real-value of TU Cooperative Game is considered instead of individual player. In such way, error-free control torque is generated via the hybrid actuator, and the maximum energy cost of the overall system is minimized as well. Finally, numerical simulations are carried out to demonstrate the effectiveness of the proposed optimal steering logic and the results demonstrate a smooth and error-free control. (C) 2019 Elsevier Masson SAS. All rights reserved.