A New Robust Fault-tolerant Control Strategy for Aircraft with Asymmetric Structure Damage

This paper focuses on the control problem of the aircraft with asymmetric structure damage. The contribution of this study is to present a new robust fault-tolerant control strategy based on nonlinear extended state observer and nonlinear dynamic inverse, which well balances the system performance and the tolerance of damage. Firstly, the dynamic model of the aircraft with asymmetric structure damage is built adopting micro-element method. Meanwhile, the damaged aircraft control problem can be transformed into the problem of the suppression and adaptation of uncertain factors. Finally, simulations are carried on to demonstrated the control law based on the proposed strategy with NASA Generic Transport Model. Results show that the aircraft tracks the control commands quickly and accurately and the flight performance is well ensured after asymmetric structure damage occurring.