Prescribed Performance Control for Attitude Tracking of Spacecraft via High-Order Fully Actuated System Approach and Extended State Observer

This paper addresses the problem of prescribed performance control for attitude tracking of spacecraft under external disturbances. First, a high-order fully actuated system model is established through state transformation based on the prescribed performance function. An extended state observer is designed to estimate and compensate for unknown disturbance terms. Then, a novel controller based on the high-order fully actuated system approach is proposed to ensure stability of system. Finally, simulation results validate the effectiveness of the proposed controller.