Patent ID: 8853982
Filing Date: 2014-10-07
Classification: H02P

Abstract:
1. A motor control device including a feedback control system that generates a torque command for reducing a difference between an operation command signal for commanding an operation of a motor and a detection signal of a detector attached to the motor to detect a position and speed of the motor and drives the motor, the motor control device comprising: a correcting unit configured to estimate, according to a wave number set as the number of occurrences of a detection error included in the detection signal per one revolution of the motor, an amplitude and a phase of a correction amount for suppressing the detection error and sequentially update estimation values of the amplitude and the phase; and a post-correction-detection-signal calculating unit configured to generate, as a target signal for calculating a difference from the operation command signal, a post-correction detection signal, which is a difference between the detection signal and the correction amount, instead of the detection signal.