Brushless DC motor control system

The utility model discloses a brushless DC motor control system, comprising a position sensor arranged on a stator of a brushless DC motor, used for detecting the position information of a rotor of the motor during the running, and sending the position information to a DSP controller; the DSP controller used for obtaining the real-time rotating speed of the motor according to the adjacent position information sent by the position sensor and the acquisition time of the adjacent position information, comparing the real-time rotating speed with a preset target rotating speed, and sending a control signal to a drive and inverter circuit according to the comparison result; the drive and inverter circuit, used for controlling the rotating speed and the rotating directions of the motor according to the control signal of the DSP controller. The brushless DC motor control system of the utility model enables a set of rotating speed closed loop control system based on the DSP and applied to the brushless DC motor to be realized by utilizing the high performance data processing capability and abundant peripheral interfaces, and is good in anti-interference performance and stable in work.