Active Fault Tolerant Attitude Control for Flexible Spacecraft under Loss of Actuator Effectiveness
B Xiao, QL Hu (Harbin Institute of Technology, China) & MI Friswell (Swansea University)
International Journal of Adaptive Control and Signal Processing, Vol. 27, No. 11, November 2013, pp. 925-943
A theoretical framework for active fault tolerant attitude stabilization control is developed and applied to flexible spacecraft. The proposed scheme solves a difficult problem of fault tolerant controller design in the presence of severe partial loss of actuator effectiveness faults and external disturbances. This is accomplished by developing an observer-based fault detection and diagnosis (FDD) mechanism to reconstruct the actuator faults. Accordingly, a backstepping based fault tolerant control law is reconfigured using the reconstructed fault information. It is shown that the proposed design approach guarantees that all of the signals of the closed-loop system are uniformly ultimately bounded. The closed-loop performance of the proposed control strategy is evaluated extensively through numerical simulations.
This material has been published in the International Journal of Adaptive Control and Signal Processing, Vol. 27, No. 11, November 2013, pp. 925-943, the only definitive repository of the content that has been certified and accepted after peer review. Copyright and all rights therein are retained by Wiley.
Link to paper using doi: 10.1002/acs.2363
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