| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrically-driven power steering device of good steering feeling in which an accurate offset current is obtained always even in normal steering state, and torque ripple due to an offset current is reduced.SOLUTION: The electrically-driven power steering device includes offset current calculation means for performing d/q conversion of a current detected by current detection means, and calculating an offset current value from a d-axis current converted by d/q conversion means, and offset current correction means for correcting a current flowing through a motor by an offset current value calculated by the offset current calculation means. The offset current calculation means calculates the offset current value by the phase angle of a d-axis current and the maximum amplitude value, for single electrical angle rotation of the motor. |
