Controller of brushless direct-current motor based on high-frequency impulse signal

The invention discloses a controller of a brushless direct-current motor based on a high-frequency impulse signal, belonging to the field of motor control. The invention aims at solving the problems of low energy utilization ratio, small control range and poor accuracy caused by controlling loss part control output in a direct current brushless motor by adopting the traditional method for removing a control dead region. An angular position measuring unit of the controller is used for measuring a motor angular position, a feedback speed obtaining module is used for processing a motor real angular position signal output by the angular position measuring unit and outputting a motor real speed signal; a high-frequency pulse controller is used for generating a high-frequency pulse signal; and a comparison value of a given position input signal and the real angular position signal is used as an input signal of a position PID (Proportion Integration Differentiation) control module, a comparison value of the input signal subjected to the position PID regulation and the motor real speed signal is used as an input signal of a speed PID control module, and an overlapped signal of the input signal subjected to the PID regulation and the high-frequency pulse signal is used as a control signal of the direct current brushless motor to be output.