ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Fast fault diagnosis of multi-effectors aircraft with control surface damage
Received date: 2014-05-29
Revised date: 2015-01-07
Online published: 2015-03-20
Supported by
National Natural Science Foundation of China (61304120)
An adaptive compensation observer is presented for fast fault diagnosis of multi-effectors aircraft in the presence of control surface damage, which directly estimates the deflection angles of control surfaces. Firstly, an augmented observer is designed for the estimation of system input and an adaptive compensation is introduced to improve the dynamic tracking performance of observer. Secondly, new adaptive thresholds are designed for the fast fault detection and reduction of the false alarm rate. Finally, the actuator fault feature of control surface is employed to reset the initial conditions. The limited memory least square method is developed to achieve a real-time estimation of mutation parameters, which is applied for fault isolation. Simulation results suggest that in different cases of actuator faults of control surface damage, the proposed observer methods can achieve fault alarm within 20 ms and determine the fault location in 0.22 s. Furthermore, the identification method can accurately estimate the degree of damaging within 0.2 s after fault alarm.
WANG Fawei , DONG Xinmin , CHEN Yong , WANG Xiaoping , LIAO Kaijun . Fast fault diagnosis of multi-effectors aircraft with control surface damage[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015 , 36(7) : 2350 -2360 . DOI: 10.7527/S1000-6893.2015.0009
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