Abstract

An adaptive reconfigurable flight control system using the mode switching of multiple models is studied. The conventional mode switching method may not guarantee the stability and the performance of the system. In this study, modified adaptive mode switching and decision logic are proposed to improve the adaptiveness of the transient dynamics of a system while maintaining the stability of the closed-loop system in the overall flight envelope. Fixed parameter models and adaptive models are used for mode switching, and a re-initialized adaptive model is also considered. Proper fixed system models are determined by considering various flight conditions with possible aircraft fault models. The mode switching control system is designed based on the selected models for reconfiguration. Numerical simulations are performed to validate the effectiveness of the proposed method.

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