Patent ID: 8525455

Claim:
A motor actuation control device, comprising: a control unit for outputting a command signal and a triangle wave to generate a PWM signal and controls the actuation of a motor by the PWM signal; and an angle sensor for detecting a rotor electrical angle, wherein the control unit outputs the command signal by determining a voltage value of the command signal based on the rotor electrical angle and a torque requirement value, calculates a rotation rate of the rotor for a first cycle based on the rotor electrical angle, determines a frequency of the triangle wave for the first cycle based on the rotation rate of the rotor to output the triangle wave, detects a phase difference between the phase angle of the triangle wave and the rotor electrical angle for a second cycle shorter than the first cycle, and changes the frequency of the triangle wave when the value of the phase difference between the phase angle of the triangle wave and the rotor electrical angle exceeds a predetermined threshold value.