LAUSR

Abstract Synchronization of chaotic system is useful in information hiding and secure communication. The convergence time of chaotic synchronization is a key factor that will affect its application in message recovery. A special principle of constructing a finite time stable system was proposed to realized the finite time control and synchronization of chaotic PMSM system. After that, a kind of hybrid constructing method was proposed by integrating a common stable system and finite time stable system. Also parameter identification problem was studied, and the use of error information of parameter was avoided to construct a safe scheme for information hiding and recovery. At last, detailed numerical simulation result were done to testify the rightness of all proposed new theorems and new methods.