In this paper, an adaptive fuzzy tracking control scheme by combining Lyapunov stability theory and backstepping technique is proposed for a quadrotor unmanned aerial vehicle. First, logic system used to approximate the unmodeled dynamics of system. Second, command filtering utilized compute derivatives virtual signals avoid complex analytic derivation these derivatives. Third, nonlinear distur...

This article develops a novel decentralized controller for multi-area secondary load frequency control (LFC) of power systems. The proposed robust-adaptive approach estimates the external disturbance input and uncertainties, which are assumed to be matched with input. In this regard, disturbance-observer state-feedback is designed. To offer systematic approach, design conditions derived in term...