A general chaos synchronization method based on unidirectionally or bidirectionally coupled system

This paper discusses chaos synchronization of general chaotic system. Based on Lyapunov stability theory, two sufficient conditions are given respectively for unidirectionally coupled synchronization and bidirectionally coupled synchronization. Synchronization of Lu chaotic systems is taken as illustrative examples to show the effectiveness of the proposed method. Theoretical analysis and numerical simulations are shown to verify the results.