A Fault-Tolerant and Anti-Disturbance Control Based on Sliding Mode Iterative Learning Law for Attitude of Satellite

Abstract:

To cope with the problem of the degradation of actuation effectiveness caused by actuator deflection or fault in the attitude and orbit control system (AOCS) of spacecraft on-orbit, an attitude fault-tolerant and anti-disturbance control scheme is proposed based on a sliding mode iterative learning law, in which the pseudo control input is applied to design the sliding mode controller to ensure the AOCS tracks a reference trajectory precisely after some fault occurred; By analyzing the Lyapunov stability, a novel adaptive iterative learning law is developed, which in term of the tracking error, determine some parameters in controller on-line to address the actuator failure and external disturbance. Numerical simulation experiments show that the fault-tolerant and anti-disturbance controller can ameliorate actuation malfunction and compensate the influence of external disturbance effectively.

• Periodical: Applied Mechanics and Materials (Volume 339)
• Pages: 10-15
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.339.10
• Online since: July 2013
• Authors: Jian Cheng LI, Tao Xi, Bo Wang
• Keywords: Actuator Fault-Tolerant Control, AOCS, Iterative Learning, Satelite, Sliding Mode Controller

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DOI: 10.1109/9.661085