Abstract: In order to realize the synchronous control of the chaotic system of brushless DC motor (BLDCM)， firstly, the chaotic characteristics of BLDCM system were analyzed by the mathematical model under load operation. Secondly, the backstepping synchronization controllers were designed based on the Lyapunov stability principle and the stability was studied. Finally， circuit simulator of the BLDCM system based on current converter (CCCⅡ)  was designed. The accuracy and effectiveness  of the method were verified by numerical simulation and circuit implementation.

Key words: brushless DC motor (BLDCM);  , chaotic characteristics; , Lyapunov stability principle; , backstepping synchronization controller