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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2017, Vol. 38 ›› Issue (6): 320629-320629.doi: 10.7527/S1000-6893.2016.0259

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

PD-type learning observer based fault reconstruction for spacecraft attitude control systems

ZHANG Ke1,2, HAN Zhiguo1,2, GUO Xiaohong3, LYU Meibo1,2   

  1. 1. School of Astronautics, Northwestern Polytechnical University, Xi'an 710072, China;
    2. National Key Laboratory of Aerospace Flight Dynamics, Northwestern Polytechnical University, Xi'an 710072, China;
    3. China Xi'an Satellite Control Center, Xi'an 710043, China
  • Received:2016-07-20 Revised:2016-09-21 Online:2017-06-15 Published:2016-10-08
  • Supported by:

    National Natural Science Foundation of China (61502391);China Space Foundation (N2015KC0121)

Abstract:

A fault reconstruction method based on PD-type iterative learning observer is proposed to deal with actuator additive faults, space external disturbances and measurement noises existing in the nonlinear systems such as spacecraft attitude control systems, which satisfy Lipschitz conditions. The method has the desired robust performance index, and can achieve accurate reconstruction of abrupt faults, time-varying faults, etc. in the presence of space external disturbances and measurement noises. The designed method of PD-type iterative learning observer is given based on linear matrix inequality technique, and the stability condition of the method is proved according to the Lyapunov stability theory. The influence of space external disturbances and measurement noises on actuator additive faults reconstruction is suppressed using robust technology and also linear matrix inequality toolkit solving observer parameter matrix. The method is applied to spacecraft attitude control system. Simulation results show the effectiveness of the proposed method.

Key words: fault reconstruction, iterative learning, nonlinear system, attitude control system, spacecraft

CLC Number: