Finite-Time Adaptive Fault-Tolerant Control for Airfoil Flutter of Reentry Vehicle

Abstract

This paper presents a finite-time adaptive fault-tolerant H∞ control method for a two-dimensional airfoil flutter with parameter uncertainties and external disturbances. Sensor and actuator faults are both considered. Flutter motion equations of an airfoil with cubic hard spring nonlinearity are established based on the trajectory optimization for reentry vehicle. A finite-time adaptive fault-tolerant H∞ controller is designed to deal with the airfoil flutter. The stability of the proposed controller is proved theoretically. Numerical simulations are given to demonstrate the effectiveness of the scheme.