Synchronization of chaotic systems based on SDRE method

This paper is concerned with the synchoronization of nonlinear systems using feedback control laws based on state-dependent Riccati equation (SDRE). The method requires only partial observation of the states. It requires pointwise observability and controllability along the trajectory which can be checked. The method is general and can be applied to various nonlinear systems provided that the observability and controllability conditions are satisfied