Fault Tolerant Control Based on Sliding Mode Observer and Adaptive Type-2 Fuzzy back stepping Control of Octorotor Aircraft

Abstract

In this work, an adaptive type-2 fuzzy method associated with sliding mode observer is proposed. this method is utilized to give path following for octorotor aircraft in presence parametric uncertainties and external disturbances (wind gusts). adaptive type-2 fuzzy system is exploited in order to identified an unknown nonlinear function which builds the exact dynamic model of octorotor aircraft. Besides, A sliding mode observer is built to estimate the unmeasured states. The stability analysis is demostrated by using Lyapunov approach. The proposed control method is carried out by numerical simulations, the results demonstrate the effectiveness of the proposed control strategy for the octorotor aircraft.