Synchronous chaotification of two nonidentical dynamical systems by using different kinds of coupling methods was studied.The unidirectional and bidirectional coupling,singlevariable coupling and multivariable coupling were taken into account,and the differences between them were also discussed.Based on the drive control principle of generalized synchronous chaotification,the analytical expression for synchronization control was deduced,and the permanent magnet DC motor was driven by chaotic signals of Lorenz system to make the speed maintain in chaotic state.Finally,numerical simulations were carried out to verify the effectiveness of the synchronization control.