导航

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2016, Vol. 37 ›› Issue (4): 1261-1271.doi: 10.7527/S1000-6893.2015.0160

• Electronics and Control • Previous Articles     Next Articles

A design of fast robust adaptive fault estimation method

LI Fei, ZHAO Guorong, HU Zhenggao   

  1. Department of Control Engineering, Naval Aeronautical Engineering Institute College, Yantai 264001, China
  • Received:2015-04-09 Revised:2015-05-29 Online:2016-04-15 Published:2015-06-03
  • Supported by:

    National Natural Science Foundation of China (61473306)

Abstract:

A fast robust adaptive fault estimation method is designed to reconstruct actuator fault of linear system. The strict positive realness (SPR) condition is relaxed by the adaptive fault estimation observer which simultaneously possesses robustness to disturbances. According to the bounded real lemma, different inequalities about disturbance and the derivative of fault are designed, so both the impact on fault estimation can be freely regulated. With slack variable, different Lyapunov matrices are designed to guarantee less conservatism. The cone complementarity linearization algorithm is utilized to solve the nonlinear matrix inequalities and the optimal observer parameters are obtained subsequently. The simulation results illustrate the effectiveness of the proposed method.

Key words: fault estimation, adaptive, observer, multi-constrained, cone complementarity linearization

CLC Number: