In this paper, a new robust optimal control strategy is presented to synchronize a class of
fractional-order chaotic systems with unknown fractional orders, uncertain dynamics and input nonlinearities. The dynamics of the system are estimated by
an integer-order model, using proposed non-singleton
type-2 fuzzy cerebellar model articulation controller
(NST2-CMAC). The free parameters of NST2-CMAC
are adjusted based on the adaptation laws which are
derived from Lyapunov stability analysis. To show the
effectiveness of the proposed method, two simulation
examples are provided and the results are compared
with other methods.