CONTROL DEVICE OF MOTOR

PROBLEM TO BE SOLVED: To provide a control device of a motor that reduces vibration and noise of the motor or motor peripheral devices.SOLUTION: A control device of a motor of one embodiment includes: axis torque detection means 1 for detecting torque of a motor 34; and a notch filter 3 that detects, on the basis the torque detected by the axis torque detection means 1, a natural frequency of the motor 34 or motor peripheral devices 35 and 36 and cuts a frequency domain where a natural frequency is (1/n) times, where n is an integer, as large as the natural frequency detected.