Abstract: This article introduces a digital control system of permanent magnet brushless DC electromotor in electric vehicles,and lays emphasis on discussing the realization of the digital control of driver in electric vehicles with TMS320LF2407.The DSP is used in fewer external components and lower system cost and improves veracity and real time of DC motor.Better control effect is achieved.

Key words: electric vehicles； PM brushless DC electrical machines； DSP； fully digitized；