Prescribed performance spacecraft attitude tracking with disturbance observer: A performance-adjustable policy

In this paper, a prescribed performance control (PPC) scheme for spacecraft attitude tracking with anti-disturbance and performance -adjustable properties is proposed. The proposed controller is based on the barrier Lyapunov function (BLF) approach, which can arbi-trarily adjust the state convergence performance and possess high steady-state performance. Compared with previous works, this strategy is more robust to external disturbances and thus has higher steady-state performance with low computing resource occupancy. What's more, it has the property of freely adjusting performance to meet the control objectives and performance requirements in different sce-narios. Simulation results in this paper verify the effectiveness and superiority of the proposed method. (c) 2022 COSPAR. Published by Elsevier B.V. All rights reserved.