Augmented Model Predictive Control: A Balance between Satellite Agility and Computation Complexity
For satellite control engineers, this work offers a practical MPC formulation that improves agility without excessive computational burden, though it is an incremental improvement over existing MPC variants.
The paper introduces an augmented-MPC method for agile earth observation satellites that balances agility with computational simplicity, achieving nonlinear MPC performance with linear MPC computational cost, validated through simulations and experiments.
Agile earth observation satellites employ multiple actuators to enable flexible and responsive imaging capabilities. While significant advancements in actuator technology have enhanced satellites' torque and momentum, relatively little attention has been given to control strategies specifically tailored to improve satellite agility. This paper provides a comparative analysis of different Model Predictive Control (MPC) formulations and introduces an augmented-MPC method that effectively balances agility requirements with hardware implementation constraints. The proposed method achieves the high-performance characteristics of nonlinear MPC while preserving the computational simplicity of linear MPC. Numerical simulations and physical experiments are conducted to validate the effectiveness and feasibility of the proposed approach.