MOTOR CONTROL DEVICE, PROGRAM FOR MANUFACTURING MOTOR CONTROL DEVICE, AND METHOD OF MANUFACTURING MOTOR CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To keep the throughput of control processing intact even when correcting a motor rotation angle.

SOLUTION: A motor control device that determines a rotation angle and angular velocity of a motor includes: a correction section having N (N is a positive integer of 2 or greater) bit shift circuits for dividing the angular velocity by powers of 2 by bit shifts, and an arithmetic circuit for subtracting output values of the second to nth bit shift circuits from an output value of the first bit shift circuit to produce a correction amount for the rotation angle and correcting the rotation angle with the correction amount. Two-phase DC voltages for obtaining a target torque from three-phase AC currents through the motor are determined according to the angular velocity and the two-phase DC voltages are converted to three-phase AC voltages according to the sine and cosine of the corrected rotation angle to keep the throughput of control processing intact.

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