Complete Synchronization of Lorenz System with Unbounded External Disturbance by DE-Based Controller

The complete synchronization problem of Lorenz system with unbounded external disturbance is investigated in this paper. Firstly, a suitable filter is proposed and used to exactly estimate the unbounded disturbance. Secondly, two disturbance estimator (DE)-based controllers are designed and applied to realize the complete synchronization of such system. Finally, computer simulation results verify the effectiveness and validity of the obtained theoretical results.