Journal of Systems Engineering and Electronics ›› 2014, Vol. 25 ›› Issue (4): 648-.doi: 10.1109/JSEE.2014.00075

• CONTROL THEORY AND APPLICATION • Previous Articles     Next Articles

Adaptive actuator failure compensation and disturbance rejection scheme for spacecraft

Xuelian Yao1, Gang Tao1,2,*, and Ruiyun Qi1   

  1. 1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
    2. Department of Electrical and Computer Engineering, University of Virginia, Virginia 229041000, USA
  • Online:2014-08-22 Published:2010-01-03


An adaptive actuator failure compensation scheme is proposed for attitude tracking control of spacecraft with unknown disturbances and uncertain actuator failures. A new feature of this adaptive control scheme is the adaptation of the failure pattern parameter estimates, as well as the failure signal parameter estimates, for direct adaptive actuator failure compensation. Based on an adaptive backstepping control design, the estimates of the disturbance parameters are used to solve the disturbance rejection problem. The unknown disturbances are compensated completely with the stability of the whole closed-loop system. The scheme is not only able to accommodate uncertain actuator failures, but also robust against unknown external disturbances. Simulation results
verify the desired adaptive actuator failure compensation performance.