Patent ID: 9438156
Filing Date: 2016-09-06
CPC Classification: H02P

Claim Text:
1. A motor control device generating a voltage command value from a current command value and performing feedback control using a detection current flowing in a motor, the motor control device comprising: a correction control unit configured to set a d-axis current command value and a q-axis current command value to 0 when the motor is rotated at a constant velocity; a current control unit configured to generate at least one of (i) an integral value of d-axis current deflection between the d-axis current command value and a detection current of the d-axis and (ii) an integral value of q-axis current deflection between the q-axis current command value and a detection current of the q-axis; and an integral value measurement unit configured to measure the generated integral value, wherein the correction control unit is configured to adjust a correction value at a rotation position of the motor by performing adjustment so that the measured integral value becomes a value within a range determined in advance, wherein the integral value measurement unit is configured to measure the integral value at a time of generating the correction value for the adjustment, wherein the correction control unit is configured to (i) generate at least two correction values for the adjustment, (ii) calculate an approximate formula based on the integral value of each of the at least two correction values for the adjustment, and (iii) calculate the correction value at the rotation position of the motor using the calculated approximate formula.