MOTOR DRIVE SYSTEM, MOTOR CONTROL APPARATUS AND MOTOR CONTROL METHOD

摘要

A motor control apparatus according to an embodiment includes a torque current controller, an excitation current controller, and an estimation unit. The torque current controller that performs torque current control on a motor based on a deviation between a feedback signal based on a detection result of a sensor that can detect torque or acceleration of the motor and a torque current reference. The excitation current controller that performs excitation current control on the motor based on an excitation current reference on which a high-frequency current reference is superimposed. The estimation unit that estimates at least one of a position and a velocity of the motor based on the deviation and the high-frequency current reference.

主权项

1. A motor drive system comprising:
a motor; a motor control apparatus configured to control the motor; and a sensor configured to detect torque or acceleration of the motor, the motor control apparatus comprising:
a torque current controller configured to perform torque current control on the motor based on a deviation between a feedback signal based on a detection result of the sensor and a torque current reference,an excitation current controller configured to perform excitation current control on the motor based on an excitation current reference on which a high-frequency current reference is superimposed, andan estimation unit configured to estimate at least one of a position and a velocity of the motor based on the deviation and the high-frequency current reference.