Robust adaptive observers-based sensor fault isolation and reconfiguration in flight control system

Based on performance of real-time and closed loop feedback flight control system, a set of robust adaptive observers are set up for sensor fault isolation and reconfiguration. By the method, model uncertainties, noises and interaction of sensor outputs are restrained. Simultaneously due to using sequential analysis for the remain detection, the probability of false and missing alarm is avoided. The scheme is illustrated through simulations applying the automatic terrain following flight control system of a fighter. Considered the stability of closed loop feedback system, sensor online fault isolation and reconfiguration is achieved.