In this paper, a new method for secure communication based on chaos synchronization is
proposed. It is consisted of a state feedback controller and a robust control term using the
Fourier series expansion for compensation of uncertainties. In comparison with other
uncertainty estimators such as neural networks and fuzzy systems, Fourier series are more
efficient, since they have fewer tuning. Thus, their tuning process is simpler. Similar to the
parameters of fuzzy systems, Fourier series coefficients are estimated online using the …