Adaptive Failure-Tolerant Control for Spacecraft Attitude Tracking

An intelligent failure-tolerant approach is proposed for attitude tracking control of a rigid spacecraft. To deal with the integrated troublesome of model uncertainties, external disturbances and subsystem faults and failures, ideas from artificial intelligence are used for integrating and parameterizing the system model. Furthermore, the adaptive control technique is employed to estimate the unique design parameter extracting from the reconstructed model under bounded disturbances. With the help of Lyapunov theory, we show that the proposed method guarantees the failure-tolerance capability of the closed-loop systems. Finally, the feasibility of the proposed method is illustrated through numerical examples