Combining a feedback linearization controller with a disturbance observer to control a chaotic system under external excitation

This paper proposes a robust controller which combines a feedback linearization controller with a disturbance observer. This controller can suppress the chaotic motion of an unknown nonlinear system even though it receives an unknown external force. Two numerical simulations are performed to demonstrate the feasibility of the proposed method.

► We propose a robust controller to control a chaotic system.
► The controller combines a feedback linearization controller with a disturbance observer.
► The controller can control a chaotic system disturbed by an unknown external force.