Adaptive Fixed-Time Attitude Tracking Control for Rigid Spacecraft With Actuator Faults

作者：Gao, Jiwei^*; Fu, Zhumu; Zhang, Sen

来源：IEEE Transactions on Industrial Electronics, 2019, 66(9): 7141-7149.

DOI：10.1109/TIE.2018.2878117

• Attitude tracking
• fault-tolerant
• fixed-time control
• integral sliding mode

This paper investigates fixed-time attitude tracking maneuver of rigid spacecraft in the presence of actuator faults, external disturbances, and inertia uncertainties. First, a fast finite-time stable system is investigated in the sense of fixed-time concept. Then, a nonlinear observer is designed to estimate the information of the lumped uncertainties, and this observer, integral sliding mode and geometric homogeneity are used to formulate one attitude controller, which can guarantee attitude tracking errors can be stabilized to the origin. Second, another adaptive controller is presented to steer attitude tracking errors to the equilibrium point. Lyapunov techniques are implemented to ensure the fixed-time stability of the closed-loop system. Finally, numerical simulations are carried out to demonstrate the performance of the proposed controllers.

• 出版日期2019-9
• 单位河南大学